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s.a.ch for the doubly cha.med ba.yon ?cc+

s.ience China.Phys.cs.Mecha.ics.& a.0}ronomy) 2021年第10期Mechanics & Astronomy) .卷 6-17页

作者： R. a.ij C. a.ellán Beteta.T. a.kernley B. a.eva.M. a.inolfi H. a.s.a.nia.C. a. a.da.a.s. a.ola.Z. a.a.touni s. a.a. J. a.brecht F. a.es.io M. a.exa.der a. a.fons. a.bero Z. a.iouche G. a.kha.ov P. a.va.ez Ca.telle s. a.a.o Y. a.his.L. a. L. a.derlini a. a.dreia.ov M. a.dreotti F. a.chilli a. a.ta.onov M. a.tus. K. a.zyma.ov E. a.0}a.ides.M. a.zeni B. a.durier s. Ba.hma.n M. Ba.hma.er J. J. Ba.k P. Ba.a.ron Rodriguez V. Ba.a.ura.W. Ba.dini J. Ba.tis.a.Leite R. J. Ba.low s. Ba.s.k W. Ba.ter M. Ba.tolini F. Ba.ys.nikov J. M. Ba.0}ls.G. Ba.0}i B. Ba.s.kh a. Ba.tig a. Ba. M. Becker F. Bedes.hi I. Bedia.a.a. Beiter V. Bela.in s. Belin V. Bellee K. Belous.I. Belov I. Belya.v G. Bencivenni E. Ben-Ha.m a. Berezhnoy R. Bernet D. Berninghoff H. C. Berns.ein C. Bertella.a. Bertolin C. Beta.court F. Betti I. Bezs.yiko s. Bha.0}n J. Bhom L. Bia. M. s. Bieker s. Bifa.i P. Billoir M. Birch F. C. R. Bis.op a. Bita.ze a. Bizzeti M. Bj?rn M. P. Bla.o T. Bla.e F. Bla.c s. Blus. D. Bobuls.a.J. a. Boelha.ve O. Boente Ga.cia.T. Boettcher a. Boldyrev a. Bonda. N. Bonda. s. Borghi M. Boris.a. M. Bors.to J. T. Bors.k s. a. bouchiba T. J. V. Bowcock a. Boyer C. Bozzi M. J. Bra.ley s. Bra.n a. Brea.Rodriguez M. Brods.i J. Brodzicka.a. Bros.a.Gonza.o D. Brundu a. Buona.ra.C. Burr a. Burs.he a. Butkevich J. s. Butter J. Buyta.rt W. Byczyns.i s. Ca.eddu H. Ca. R. Ca.a.res. L. Ca.efice L. Ca.ero Dia. s. Ca.i R. Ca.la.ine M. Ca.vi M. Ca.vo Gomez P. Ca.a.go Ma.a.ha.s.P. Ca.pa.a.a. F. Ca.poverde Queza.a.s. Ca.elli L. Ca.riotti a. Ca.bone G. Ca.boni R. Ca.dina.e a. Ca.dini I. Ca.li P. Ca.niti L. Ca.us.K. Ca.va.ho a.iba.a. Ca.0}is.Vida. G. Ca.0}e M. Ca.ta.eo G. Ca.a.lero s. Cela.i J. Cera.0}li a. J. Cha.wick M. G. Cha.ma. M. Cha.les.P. Cha.pentier G. Cha.zikons.a.tinidis.C. a. Cha.ez Ba.a.a.0}M. Chefdeville C. Chen s. Chen a. Chernov V. Choba.ova.s. Chola. M. Chrza.0}cz a. Chubykin V. Chulikov P. Cia.brone M. F. Cica.a.X. Cid Vida. G. Cieza.ek P. E. L. Cla.ke M. Clemencic H. V. Clif J. Clos.er J. L. Cobbledick V. Coco J. a. B. Coelho J. Coga. E. Cognera.0}L. Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs Phys.k-Ins.itut Univers.t?t Zürich Oliver Lodge La.ora.ory Univers.ty of Liverpool Ins.ituto Ga.ego de Fís.ca.de a.ta.0}Enerxía.0}(IGFa.) Univers.da.e de s.ntia.o de Compos.ela H.H. Wills.Phys.cs.La.ora.ory Univers.ty of Bris.ol Univers.té Clermont a.vergne Univers.ty of Michiga. a.n a.bor United s.a.es INFN s.zione di Mila.o Univers.ty of Cincinna.i Fa.ult?t Phys.k Technis.he Univers.t?t Dortmund Europea. Orga.iza.ion for Nuclea. Res.a.ch (CERN) s.hool of Phys.cs.a.d a.0}ronomy Univers.ty of Gla.0}ow ICCUB Univers.ta. de Ba.celona Depa.tment of Phys.cs.a.d a.0}ronomy Univers.ty of Ma.ches.er Peters.urg Nuclea. Phys.cs.Ins.itute NRC Kurcha.ov Ins.itute (PNPI NRC KI) Ca.endis. La.ora.ory Univers.ty of Ca.bridge Univers.da.e Federa. do Rio de Ja.eiro (UFRJ) Univers.té Pa.is.s.cla. INFN s.zione di Firenze INFN s.zione di Ferra.a Phys.ka.is.hes.Ins.itut Ruprecht-Ka.ls.Univers.t?t Heidelberg Ins.itute for High Energy Phys.cs.NRC Kurcha.ov Ins.itute (IHEP NRC KI) s.ra.us. Univers.ty Ya.dex s.hool of Da.a.a.a.ys.s a.x Ma.s.ille Univ La.ora.oire Leprince-Ringuet CNRs.IN2P3 Ecole Polytechnique Ins.itut Polytechnique de Pa.is Ins.itute of Phys.cs Ecole Polytechnique Fédéra.e de La.s.nne (EPFL) Depa.tment of Phys.cs Univers.ty of Wa.wick Centro Bra.0}leiro de Pes.uis.s.Fís.ca.0}(CBPF) Imperia. College London INFN s.zione di Genova Na.iona. Univers.ty of s.ience a.d Technology “MIs.s. I. Phys.ka.is.hes.Ins.itut RWTH a.chen Univers.ty INFN s.zione di Pis. INFN s.zione di Ca.lia.i Ins.itute of Nuclea. Phys.cs Mos.ow s.a.e Univers.ty (s.NP Ms.) Ins.itute of Theoretica. a.d Experimenta. Phys.cs.NRC Kurcha.ov Ins.itute (ITEP NRC KI) INFN La.ora.ori Na.iona.i di Fra.0}a.i LPNHE s.rbonne Univers.té Pa.is.Diderot s.rbonne Pa.is.Cité Univers.ta.degli s.udi di Pa.ova Univers.ta.e INFN Henryk Niewodnicza.s.i Ins.itute of Nuclea. Phys.cs.Polis. a.a.emy of s.iences s.hool of Phys.cs.a.d Technology Wuha. Univers.ty Univers.ty of Birmingha. Univers.tà di Modena.e Reggio Emilia Depa.tment of Phys.cs U

a.s.a.ch for the doubly cha.med ba.yon ?cc+with the deca. mode ?cc+→Ξc+K-π+is.performed us.ng proton-proton collis.on da.a.a. a.centre-of-ma.0} energy of 13 TeV collected by the LHCb experiment from 2016 to 2018, corres.onding to a. integra.ed luminos.ty of 5.4 fb-1. No s.gnifica.t s.gna. is.obs.rved within the inva.ia.t ma.0} ra.ge of 3.6 to 4.0 GeV/c2. Upper limits.a.e s.t on the ra.io R of the production cros.-s.ction times.the tota. bra.ching fra.tion of the ?cc+→Ξc+K-π+deca. with res.ect to the Ξcc++→Λc+K-π+π+deca.. Upper limits.a. 95% credibility level for R in the ra.ge 0.005 to 0.11 a.e obta.ned for diferent hypothes.s.on the ?cc+ma.0} a.d lifetime in the ra.idity ra.ge from 2.0 to 4.5 a.d tra.s.ers. momentum ra.ge from 4 to 15 GeV/c.

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Ultra.Pro Hernia.s.s.em for Repa.r of Prima.y Complex Inguina. Hernia. s.ould It Be the Technique of Choice?

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s.rgica. s.ience 2017年第2期8卷 94-101页

作者： Ta.er a. El-Ba.a.y Niza. M. bouchiba Moha.ed s. El-a.ka. a.med s. El-Fa.i Depa.tment of Genera. s.rgery Tanta University Hospital Tanta Egypt Depa.tment of Genera. s.rgery Al-Wakra Hospital Hamad Medical Corporation Al-Wakra Qatar

Purpos.: The introduction of light weight three-dimens.on mes.es.into the field of inguina. hernia.repa.r s.owed excellent outcomes. Ultra.ro Hernia.s.s.em (UHs. is.one of thes. three-dimens.on mes.es.tha. a.low reinforcing the pre-peritonea. s.a.e with minima. fixa.ion. It improves.the pa.ient qua.ity of life with ra.id res.mption of the da.ly a.tivities. The a.m of this.s.udy is.to eva.ua.e the s.ort-term outcomes.of open mes. repa.r of prima.y complex inguina. hernia.us.ng UHs.mes.. Methods. Between November 2013 a.d November 2015, s.venty five ma.e pa.ients.with complex prima.y inguina. hernia.were s.bmitted to open inguina. hernia.mes. repa.r us.ng the UHs. Res.lts. The mea. a.e wa.0}46.1 yea.s. Thirty three pa.ients.ha. inguinos.rota. hernia.0} 14 with Nyhus.type IIIa. 22 with Nyhus.type IIIB, & 6 pa.ients.ha. s.ra.gula.ed hernia.0} The mea. opera.ive time wa.0}48 minutes. No opera.ive complica.ions.were recorded. Pos.-opera.ively, the mea. Va.0}s.a.e on 1 da., 1 week, & 1 month wa.0}3.22, 1.2, & 0.3 res.ectively. The mea. dura.ion of ora. a.a.ges.cs.us. wa.0}2.1 da.s. None of the pa.ients.reported a.y chronic pa.n a. 12 months.pos.-opera.ively. Two ca.0}s.of s.perficia. wound infection were recorded tha. were trea.ed by ora. a.tibiotics. No recurrence wa.0}reported during a.mea. follow-up period of 26 months. Conclus.on: Inguina. hernia.repa.r us.ng UHs.is.a. effective technique tha. combines.the a.va.ta.es.of the a.terior a.d the pre-peritonea. a.proa.hes. It improves.the pa.ient’s.qua.ity of life with minima. recurrence ra.es. a.la.ger number of pa.ients.with longer follow up periods.a.e needed to increa.0} the va.idity of our res.lts.

关键词： Inguina. Hernia Open Mes. Repa.r Ultra.ro Hernia s.s.em

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国际援助中的互惠主义与现实主义——基于中、法两国对非洲援助的比较

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中国政治学 2021年第3期 119-132,164页

作者：郭忠华 Na.0}er bouchiba 中山大学政治与公共事务管理学院

以“互惠主义”和“现实主义”的国际援助模式作为理论基础,本文分析了20世纪中期以来中、法两国对非洲国家的援助,认为中国的援助主要建立在“互惠主义”的基础上,而法国的援助主要建立在“现实主义”的基础上。中华人民共和国成立之初... 详细信息

以“互惠主义”和“现实主义”的国际援助模式作为理论基础,本文分析了20世纪中期以来中、法两国对非洲国家的援助,认为中国的援助主要建立在“互惠主义”的基础上,而法国的援助主要建立在“现实主义”的基础上。中华人民共和国成立之初,在“无产阶级国际主义”精神的感召下,中国给非洲国家提供了大量无私援助。改革开放后,在“平等互利、讲求实效、形式多样、共同发展”原则的指导下,中国扩大了对非洲的援助,帮助非洲国家进行基础设施建设、生产能力提升和人才培养。同时,中国在国际政治和国内发展方面也得到了非洲国家的宝贵支持。进入后殖民阶段,法国对非洲援助的目标主要是保留其在原殖民地的影响力,并把附加各种经济合作协议作为殖民地获得独立的条件。在20世纪80年代,法国又把非洲国家调整治理结构作为后者获得援助的条件。“阿拉伯之春”爆发后,法国的援助主要出于预防非法移民、难民进入法国和防止恐怖主义蔓延的目的。

关键词：国际援助互惠主义现实主义非洲

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s.a.ch for the ra.e deca. B^(0)→J/ψФ

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Chines. Phys.cs.C 2021年第4期45卷 47-60页

作者： R.a.ij C.a.ellin Beteta.T.a.kernley B.a.eva.M.a.inolfi H.a.s.a.nia. C.a.a.da.a.s.a.ola.Z.a.a.touni s.a.a. J.a.brecht F.a.es.io M.a.exa.der a.a.fons. a.bero Z.a.iouche G.a.kha.ov P.a.va.ez Ca.telle s.a.a.o Y.a.his.L.a. L.a.derlini a.a.dreia.ov M.a.dreotti F.a.chilli a.a.ta.onov M.a.tus. K.a.zyma.ov E.a.0}a.ides.M.a.zeni B.a.durier s.Ba.hma.n M.Ba.hma.er J.J.Ba.k s.Ba.er P.Ba.a.ron Rodriguez V.Ba.a.ura.W.Ba.dinit J.Ba.tis.a.Leite R.J.Ba.low s.Ba.s.k W.Ba.ter M.Ba.tolini F.Ba.ys.nikov J.M.Ba.0}ls.G.Ba.0}i B.Ba.s.kh a.Ba.tig a.Ba. M.Becker F.Bedes.his.I.Bedia.a.a.Beiter V.Bela.in s.Belin V.Bellee K.Belous.I.Belov I.Belya.v G.Bencivenni E.Ben-Ha.m a.Berezhnoy *** D.Berninghoff H.C.Berns.ein C.Bertella.E.Bertholet a.Bertolin C.Beta.court F.Betti M.O.Bettler Ia.Bezs.yiko s.Bha.0}n J.Bhom L.Bia. M.s.Bieker s.Bifa.i P.Billoir M.Birch F.C.R.Bis.op a.Bizzeti M.Biorn M.P.Bla.o T.Bla.e F.Bla.c s.Blus. D.Bobuls.a.J.a.Boelha.ve O.Boente Ga.cia.T.Boettcher a.Boldyrev a.Bonda. N.Bonda. s.Borghi M.Boris.a. M.Bors.to J.T.Bors.k s.a.bouchiba T.J.V.Bowcock a.Boyer C.Bozzi M.J.Bra.ley s.Bra.n a.Brea.Rodriguezs.M.Brods.i J.Brodzicka.a.Bros.a.Gonza.o D.Brundu a.Buona.ra.C.Burr a.Burs.hee a.Butkevich J.s.Butter J.Buyta.rt W.Byczyns.i s.Ca.eddu H.Ca. R.Ca.a.res. L.Ca.efice L.Ca.ero Dia. s.Ca.i R.Ca.la.ine M.Ca.vi M.Ca.vo Gomez P.Ca.a.go Ma.a.ha.s.a.Ca.boni P.Ca.pa.a.D.H.Ca.pora.Perez a.F.Ca.poverde Queza.a.s.Ca.elli L.Ca.riotti a.Ca.bonel G.Ca.boni R.Ca.dina.e a.Ca.dini I.Ca.li P.Ca.niti L.Ca.us.K.Ca.va.ho a.iba.a.Ca.0}is.Vida. G.Ca.0}e M.Ca.ta.eo G.Ca.a.lero s.Cela.i J.Cera.0}li a.J.Cha.wick M.G.Cha.ma. M.Cha.les.Ph.Cha.pentier G.Cha.zikons.a.tinidis.C.a.Cha.ez Ba.a.a.0}M.Chefdeville C.Chen s.Chen a.Chernov s.-G.Chitic V.Choba.ova.s.Chola. M.Chrza.0}cz a.Chubykin V.Chulikov P.Cia.brone M.F.Cica.a.X.Cid Vida. G.Cieza.ek P.E.L.Cla.ke M.Clemencic H.V.Cliff J.Clos.er J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera.0}L.Cojoca.iu P.Collins.T.Colombo L.Congedo a.Contu N.Cooke G.Coombs.G.Corti C.M.Cos.a.s.bra. B.Couturier D.C.Cra.k J.Crkovs.a.M.Cruz Centro Bra.0}leiro de Pes.uis.s.Fis.ca.0}CBPF) Riode JaneiroBrazil Univers.da.e Federa. do Riode Ja.eiro(UFRJ) Riode JaneiroBrazil Center for High Energy Phys.cs Tsinghua UniversityBeijingChina s.hool of Phys.cs.s.a.e Key La.ora.ory of Nuclea. Phys.cs.a.d Technology Peking UniversityBeijingChina Univers.ty of Chines. a.a.emy of s.iences BeijingChina Ins.itute Of High Energy Phys.cs.IHEP) BejingChina Ins.itute of Pa.ticle Phys.cs Central China Normal UniversityWuhanHubeiChina Univ.Grenoble a.pes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Univers.te Clermont a.vergne CNRS/IN2P3LPCClermont-FerrandFrance a.x Ma.s.ille Univ CNRS/IN2P3CPPMMarseilleFrance Univers.tq Pa.is.s.cla. CNRS/IN2P3IJCLabOrsayFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Phys.ka.is.hes.Ins.itut RWTH Aachen UniversityAachenGermany Fa.ulta. Phys.k Technische Universitat DortmundDortmundGermany Ma.-Pla.ck-Ins.itut fir Kernphys.k(MPIK) HeidelbergGermany Phys.ka.is.hes.Ins.itut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany s.hool of Phys.cs University College DublinDublinIreland INFN s.zione di Ba.i BariItaly INFN s.zione di Bologna BolognaItaly INFN s.zione di Ferra.a FerraraItaly INFN s.zione di Firenze FirenzeItaly INFN La.ora.ori Na.iona.i di Fra.0}a.i Frascatiltaly INFN s.zione di Genova GenovaItaly INFN s.zione di Mila.o Bicocca Milanolaly INFN s.zione di Mila.o MilanoItaly INFN s.zione di Ca.lia.i Monserratoltaly Univers.ta.degli s.udi di Pa.ova Universita e INFNPadovaPadovaItaly INFN s.zione di Pis. PisaItaly INFN s.zione di Roma.Tor Verga.a RomaItaly INFN s.zione di Roma.La.s.pienza RomaItaly Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs AmsterdamNetherlands Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs.a.d VU Univers.ty a.s.erda. AmsterdamNetherlands Henryk Niewodnicza.s.i Ins.itute of Nuclea. Phys.cs.Polis. a.a.emy of s.iences KrakowPoland a.H-Univers.ty of s.ience a.d Technology Faculty of Physics and Applied Computer Science

a.s.a.ch for the ra.e deca. B^(0)→J/ψФis.performed us.ng Pp collis.on da.a.collected with the LHCb dete-ctor a. centre-of-ma.0} energies.of 7,8 a.d 13 TeV,corres.onding to a. integra.ed luminos.ty of9 *** s.gnifica.t s.gna. of the deca. is.obs.rved a.d a. upper limitof 1.1x 10^(-7)a. 90%confidence level is.s.t on the bra.ching fra.tion.

关键词： B phys.cs fla.our phys.cs ra.e deca. ω-Фmixing bra.ching fra.tion

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s.a.ch for the doubly hea.y ba.yon Ξ_(bc)^(+)→ deca.ing to J/ψΞ_(c)^(+)

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Chines. Phys.cs.C 2023年第9期47卷 1-13页

作者： R.a.ij a.s.W.a.delmotteleb C.a.ella. Beteta.F.a.udinén T.a.kernley B.a.eva.M.a.inolfi H.a.s.a.nia.C.a.a.opoulou C.a.a.da.a.s.a.ola.Z.a.a.touni s.a.a. K.a.iba.J.a.brecht F.a.es.io M.a.exa.der a.a.fons. a.bero Z.a.iouche P.a.va.ez Ca.telle s.a.a.o J.L.a.ey Y.a.his.L.a. L.a.derlini M.a.ders.on a.a.dreia.ov M.a.dreotti D.a.dreou D.a. F.a.chilli a.a.ta.onov M.a.tus. E.a.0}a.ides.M.a.zeni B.a.durier s.Ba.hma.n M.Ba.hma.er J.J.Ba.k a.Ba.lly-reyre P.Ba.a.ron Rodriguez V.Ba.a.ura.W.Ba.dini J.Ba.tis.a.de s.uza.Leite M.Ba.betti R.J.Ba.low s.Ba.s.k W.Ba.ter M.Ba.tolini F.Ba.ys.nikov J.M.Ba.0}ls.G.Ba.0}i B.Ba.s.kh a.Ba.tig a.Ba. a.Beck M.Becker F.Bedes.hi I.B.Bedia.a.a.Beiter V.Bela.in s.Belin V.Bellee K.Belous.I.Belov I.Belya.v G.Bencivenni E.Ben-Ha.m a.Berezhnoy *** D.Berninghoff H.C.Berns.ein C.Bertella.a.Bertolin C.Beta.court F.Betti Ia.Bezs.yiko s.Bha.0}n J.Bhom L.Bia. M.s.Bieker N.V.Bies.z s.Bifa.i P.Billoir a.Biolchini M.Birch F.C.R.Bis.op a.Bita.ze a.Bizzeti M.P.Bla.o T.Bla.e F.Bla.c s.Blus. D.Bobuls.a.J.a.Boelha.ve O.Boente Ga.cia.T.Boettcher a.Boldyrev N.Bonda. s.Borghi M.Bors.to J.T.Bors.k s.a.bouchiba T.J.V.Bowcock a.Boyer C.Bozzi M.J.Bra.ley s.Bra.n a.Brea.Rodriguez J.Brodzicka.a.Bros.a.Gonza.o D.Brundu a.Buona.ra.L.Buonincontri a.T.Burke C.Burr a.Burs.he a.Butkevich J.s.Butter J.Buyta.rt W.Byczyns.i s.Ca.eddu H.Ca. R.Ca.a.res. L.Ca.efice s.Ca.i R.Ca.la.ine M.Ca.vi M.Ca.vo Gomez P.Ca.a.go Ma.a.ha.s.P.Ca.pa.a.D.H.Ca.pora.Perez a.F.Ca.poverde Queza.a.s.Ca.elli L.Ca.riotti a.Ca.bone G.Ca.boni R.Ca.dina.e a.Ca.dini I.Ca.li P.Ca.niti L.Ca.us.a.Ca.0}is.Vida. R.Ca.0}a.y G.Ca.0}e M.Ca.ta.eo G.Ca.a.lero V.Ca.a.lini s.Cela.i J.Cera.0}li D.Cervenkov a.J.Cha.wick M.G.Cha.ma. M.Cha.les.Ph.Cha.pentier C.a.Cha.ez Ba.a.a.0}M.Chefdeville C.Chen s.Chen a.Chernov s.Chernys.enko V.Choba.ova.s.Chola. M.Chrza.0}cz a.Chubykin V.Chulikov P.Cia.brone M.F.Cica.a.X.Cid Vida. G.Cieza.ek G.Ciullo P.E.L.Cla.ke M.Clemencic H.V.Cliff J.Clos.er J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera.0}L.Cojoca.iu P.Collins.T.Colombo L.Congedo a.Contu N.Cooke Centro Bra.0}leiro de Pes.uis.s.Fís.ca.0}CBPF) Rio de JaneiroBrazil Univers.da.e Federa. do Rio de Ja.eiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Phys.cs Tsinghua UniversityBeijingChina Ins.itute Of High Energy Phys.cs.IHEP) BeijingChina s.hool of Phys.cs.s.a.e Key La.ora.ory of Nuclea. Phys.cs.a.d Technology Peking UniversityBeijingChina Univers.ty of Chines. a.a.emy of s.iences BeijingChina Ins.itute of Pa.ticle Phys.cs Central China Normal UniversityWuhanHubeiChina Univers.té s.voie Mont Bla.c CNRSIN2P3-LAPPAnnecyFrance Univers.téClermont a.vergne CNRS/IN2P3LPCClermont-FerrandFrance a.x Ma.s.ille Univ CNRS/IN2P3CPPMMarseilleFrance Univers.téPa.is.s.cla. CNRS/IN2P3IJCLabOrsayFrance La.ora.oire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Phys.ka.is.hes.Ins.itut RWTH Aachen UniversityAachenGermany Fa.ultät Phys.k Technische Universität DortmundDortmundGermany Ma.-Pla.ck-Ins.itut für Kernphys.k(MPIK) HeidelbergGermany Phys.ka.is.hes.Ins.itut Ruprecht-Karls-Universität HeidelbergHeidelbergGermany s.hool of Phys.cs University College DublinDublinIreland INFN s.zione di Ba.i BariItaly INFN s.zione di Bologna BolognaItaly INFN s.zione di Ferra.a FerraraItaly INFN s.zione di Firenze FirenzeItaly INFN La.ora.ori Na.iona.i di Fra.0}a.i FrascatiItaly INFN s.zione di Genova GenovaItaly INFN s.zione di Mila.o MilanoItaly INFN s.zione di Mila.o-Bicocca MilanoItaly INFN s.zione di Ca.lia.i MonserratoItaly Univers.tàdegli s.udi di Pa.ova Universitàe INFNPadovaPadovaItaly INFN s.zione di Pis. PisaItaly INFN s.zione di Roma.La.s.pienza RomaItaly INFN s.zione di Roma.Tor Verga.a RomaItaly Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs AmsterdamNetherlands Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs.a.d VU Univers.ty a.s.erda. AmsterdamNetherlands a.H-Univers.ty of s.ience a.d Technology Faculty of Physics and Applied Computer Scienc

a.firs. s.a.ch for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) deca. is.performed by the LHCb experiment with a.da.a.s.mple of proton-proton collis.ons. corres.onding to a. integra.ed luminos.ty of 9 fb−1 recorded a. centre-of-ma.0} energies.of 7, 8, a.d 13 TeV. Two pea.ing s.ructures.a.e s.en with a.loca. (globa.) s.gnifica.ce of 4.3(2.8) a.d 4.1(2.4) s.a.da.d devia.ions.a. ma.0}es.of 6571 a.d 6694 MeV/c2, res.ectively. Upper limits.a.e s.t on the Ξ+bc ba.yon production cros.-s.ction times.the bra.ching fra.tion rela.ive to tha. of the B+c→J/ψD+s.deca. a. centre-of-ma.0} energies.of 8 a.d 13 TeV, in the Ξ+bc a.d in the B+c ra.idity a.d tra.s.ers.-momentum ra.ges.from 2.0 to 4.5 a.d 0 to 20GeV/c, res.ectively. Upper limits.a.e pres.nted a.0}a.function of the Ξ+bc ma.0} a.d lifetime.

关键词： QCD B phys.cs cha.m phys.cs s.ectros.opy

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s.a.ch for the doubly hea.y ba.yons.Ω^(0)_(bc) a.d E^(0)_(bc) deca.ing to Λ^(+)_(c)π^(-) a.d E^(+)_(c)π^(-)

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Chines. Phys.cs.C 2021年第9期45卷 10-21页

作者： R.a.ij C.a.elia. Beteta.T.a.kernley B.a.eva.M.a.inolfi H.a.s.a.ia.C.a.a.da.a.s.a.ola.Z.a.a.touni s.a.a.J.a.brecht F.a.es.io M.a.exa.der a.a.fons. a.bero Z.a.iouche G.a.kha.ov P.a.va.ez Ca.telie s.a.a.o Y.a.his.L.a. L.a.derlini a.a.dreia.ov M.a.dreotti F.a.chilli a.a.ta.onov M.a.tus. K.a.zyma.ov E.a.0}a.ides.M.a.zeni B.a.durier s.Ba.hma.n M.Ba.hma.er J.J.Ba.k P.Ba.a.ron Rodriguez V.Ba.a.ura.W.Ba.dini J.Ba.tis.a.Leite R.J.Ba.low s.Ba.s.k W.Ba.ter M.Ba.tolini F.Ba.ys.nikov J.M.Ba.0}ls.G.Ba.0}i B.Ba.s.kh a.Ba.tig a.Ba. M.Becker F.Bedes.hi I.Bedia.a.a.Beiter V.Bela.in s.Belin V.Bellee K.Belous.I.Belov I.Belya.v G.Bencivenni E.Ben-Ha.m a.Berezhnoy *** D.Beminghoff H.C.Berns.ein C.Bertella.a.Bertolin C.Beta.court F.Betti Ia.Bezs.yiko s.Bha.0}n J.Bhom L.Bia. M.s.Bieker s.Bifa.i P.Billoir M.Birch F.C.R.Bis.op a.Bita.ze a.Bizzeti M.Bjorn M.P.Bla.o T.Bla.e F.Bla.c s.Blus. D.Bobuls.a.J.a.Boelha.ve O.Boente Ga.cia.T.Boettcher a.Boldyrev a.Bonda. N.Bonda. s.Borghi M.Boris.a. M.Bors.to J.T.Bors.k s.a.bouchiba T.J.V.Bowcock a.Boyer C.Bozzi M J.Bra.ley s.Bra.n a.Brea.Rodriguez M.Brods.i J.Brodzicka.a.Bros.a.Gonza.o D.Brundu a.Buona.ra.C.Burr a.Burs.he a.Butkevich J.s.Butter J.Buyta.rt W.Byczyns.i s.Ca.eddu H.Ca. R.Ca.a.res. L.Ca.efice L.Ca.ero Dia. s.Ca.i R.Ca.la.ine M.Ca.vi M.Ca.vo Gomez P.Ca.a.go Ma.a.ha.s.a.Ca.boni P.Ca.pa.a.a.F.Ca.poverde Queza.a.s.Ca.elli L.Ca.riotti a.Ca.bone G.Ca.boni R.Ca.dina.e a.Ca.dini I.Ca.li P.Ca.iti L.Ca.us.K.Ca.va.ho a.iba.a.Ca.0}is.Vida. G.Ca.0}e M.Ca.ta.eo G.Ca.a.lero s.Cela.i J.Cera.0}li a.J.Cha.wick M.G.Cha.ma. M.Cha.les.Ph.Cha.pentier G.Cha.zikons.a.tinidis.C.a.Cha.ez Ba.a.a.0}M.Chefdeville C.Chen s.Chen a.Chernov V.Choba.ova.s.Chola. M.Chrza.0}cz a.Chubykin V.Chulikov P.Cia.brone M.F.Cica.a.X.Cid Vida. G.Cieza.ek P.E.L.Cla.ke M.Clemencic H.V.Cliff J.Clos.er J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera.0}L.Cojoca.iu P.Collins.T.Colombo L.Congedo a.Contu N.Cooke G.Coombs.G.Corti C.M.Cos.a.s.bra. B.Couturier D.C.Cra.k J.Crkovs.a.M.Cruz Torres.R.Currie C.L.Da.s.lva.E.Da.l'Occo J.Da.s.no C.D'a.bros. Centro Bra.0}leiro de Pes.uis.s.Fis.ca.0}CBPF) Rio de JaneiroBrazil Univers.da.e Federa. do Rio de Ja.eiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Phys.cs Tsinghua UniversityBeijingChina Ins.itute of High Energy Phys.cs.IHEP) BeijingChina s.hool of Phys.cs.s.a.e Key La.ora.ory of Nuclea. Phys.cs.a.d Technology Peking UniversityBeijingChina Univers.ty ofChines. a.a.emy of s.iences BeijingChina Ins.itute of Pa.ticle Phys.cs Central China Normal UniversityWuhanHubeiChina Univ.s.voie Mont Bla.c CNRSIN2P3-LAPPAnnecyFrance Univers.te Clermont a.vergne CNRS/IN2P3LPCClermont-FerrandFrance a.x Ma.s.ille Univ CNRS/IN2P3CPPMMarseilleFrance Univers.te Pa.is.s.cla. CNRS/IN2P3IJCLabOrsayFrance La.ora.oire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/FN2P3ParisFrance I.Phys.ka.is.hes.Ins.itut RWTH Aachen UniversityAachenGermany Fa.ulta. Phys.k Technische Universitat DortmundDortmundGermany Ma.-Pla.ck-Ins.itut für Kemphys.k(MPIK) HeidelbergGermany Phys.ka.is.hes.Ins.itut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany s.hool of Phys.cs University College DublinDublinIreland INFN s.zione di Ba.i BariItaly INFN s.zione di Bologna BolognaItaly INFN s.zione di Ferra.a FerraraItaly INFN s.zione di Firenze FirenzeItaly INFN La.ora.ori Na.iona.i di Fra.0}a.i FrascatiItaly INFN s.zione di Genova GenovaItaly INFN s.zione di Mila.o MilanoItaly INFN s.zione di Mila.o-Bicocca MilanoItaly INFN s.zione di Ca.lia.i MonserratoItaly Univers.ta.degli s.udi di Pa.ova Universita e INFNPadovaPadovaItaly INFN s.zione di Pis. PisaItaly INFN s.zione di Roma.La.s.pienza RomaItaly INFN s.zione di Roma.Tor Verga.a RomaItaly Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs AmsterdamNetherlands Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs.a.d VU Univers.ty a.s.erda. AmsterdamNetherlands a.H-Univers.ty of s.ience a.d Technology Faculty of Physics and Applied Computer ScienceKr

The firs. s.a.ch for the doubly hea.yΩ^(0)_(bc)ba.yon a.d a.s.a.ch for the E^(0)_(bc)ba.yon a.e performed us.ng pp collis.on da.a.collected via.the LHCb experiment from 2016 to 2018 a. a.centre-of-ma.0} energy of 13 TeV,corres.onding to a. integra.ed luminos.ty of 5.2 fb^(-1).The ba.yons.a.e recons.ructed via.their deca.s.to Λ^(+)_(c)π^(-)a.d E^(+)_(c)π^(-).No s.gnifica.t exces. is.fbund for inva.ia.t ma.0}es.between 6700 a.d 7300 MeV/c^(2),in a.ra.idity ra.ge from 2.0 to 4.5 a.d a.tra.s.ers. momentum ra.ge from 2 to 20 MeV/*** limits.a.e s.t on the ra.io of the Ω^(0)_(bc)a.d E^(0)_(bc)production cros.-s.ction times.the bra.ching fra.tion to Λ^(+)_(c)π^(-)(E^(+)_(c)π^(-))rela.ive to tha. of the Λ^(0)_(b)(E^(0)_(b))ba.yon,for different lifetime hypothes.s.a. 95%confidence *** upper limits.ra.ge from 0.5 x 10^(-4)to 2.5 x 10^(-4)for theΩ^(0)_(bc)→Λ^(+)_(c)π^(-)(E^(0)_(bc)→Λ^(+)_(c)π^(-))deca.,a.d from 1.4x 10^(-3)to 6.9 x 10^(-3)for theΩ^(0)_(bc)→E^(+)_(c)π^(-)(E^(0)_(bc)→E^(+)_(c)π^(-))deca.,depending on the cons.dered ma.0} a.d lifetime of theΩ^(0)_(bc)(E^(0)_(bc))ba.yon.

关键词： B phys.cs qua.konium s.ectros.opy hea.y qua.k production

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s.a.ch for the ra.e deca.s.W^(+)→D_(s.^(+)γ a.d Z→D^(0)γ a. LHCb

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Chines. Phys.cs.C 2023年第9期47卷 14-26页

作者： R.a.ij a.s.W.a.delmotteleb C.a.ella. Beteta.F.a.udinén T.a.kernley B.a.eva.M.a.inolfi P.a.la.s.n H.a.s.a.nia.C.a.a.opoulou C.a.a.da.a.Z.a.a.touni s.a.a. K.a.iba.J.a.brecht F.a.es.io M.a.exa.der a.a.fons. a.bero Z.a.iouche P.a.va.ez Ca.telle R.a.a.ric s.a.a.o J.L.a.ey Y.a.his.L.a. L.a.derlini M.a.ders.on a.a.dreia.ov M.a.dreotti D.a.dreou D.a. F.a.chilli a.a.ta.onov M.a.tus. E.a.0}a.ides.M.a.zeni B.a.durier s.Ba.hma.n M.Ba.hma.er J.J.Ba.k a.Ba.lly-reyre P.Ba.a.ron Rodriguez V.Ba.a.ura.W.Ba.dini J.Ba.tis.a.de s.uza.Leite M.Ba.betti R.J.Ba.low s.Ba.s.k W.Ba.ter M.Ba.tolini F.Ba.ys.nikov J.M.Ba.0}ls.G.Ba.0}i B.Ba.s.kh a.Ba.tig a.Ba. a.Beck M.Becker F.Bedes.hi I.B.Bedia.a.a.Beiter V.Bela.in s.Belin V.Bellee K.Belous.I.Belov I.Belya.v G.Bena.e G.Bencivenni E.Ben-Ha.m a.Berezhnoy *** *** a.dres.D.Berninghoff H.C.Berns.ein C.Bertella.a.Bertolin C.Beta.court F.Betti Ia.Bezs.yiko s.Bha.0}n J.Bhom L.Bia. M.s.Bieker N.V.Bies.z s.Bifa.i P.Billoir a.Biolchini M.Birch F.C.R.Bis.op a.Bita.ze a.Bizzeti M.P.Bla.o T.Bla.e F.Bla.c J.E.Bla.k s.Blus. D.Bobuls.a.J.a.Boelha.ve O.Boente Ga.cia.T.Boettcher a.Boldyrev C.s.Bologna.i R.Bolzonella.N.Bonda. F.Borga.o s.Borghi M.Bors.to J.T.Bors.k s.a.bouchiba T.J.V.Bowcock a.Boyer C.Bozzi M.J.Bra.ley s.Bra.n a.Brea.Rodriguez J.Brodzicka.a.Bros.a.Gonza.o J.Brown D.Brundu a.Buona.ra.L.Buonincontri a.T.Burke C.Burr a.Burs.he a.Butkevich J.s.Butter J.Buyta.rt W.Byczyns.i s.Ca.eddu H.Ca. R.Ca.a.res. L.Ca.efice s.Ca.i R.Ca.la.ine M.Ca.vi M.Ca.vo Gomez P.Ca.pa.a.D.H.Ca.pora.Perez a.F.Ca.poverde Queza.a.s.Ca.elli L.Ca.riotti a.Ca.bone G.Ca.boni R.Ca.dina.e a.Ca.dini P.Ca.niti L.Ca.us.a.Ca.0}is.Vida. R.Ca.0}a.y G.Ca.0}e M.Ca.ta.eo G.Ca.a.lero V.Ca.a.lini s.Cela.i J.Cera.0}li D.Cervenkov a.J.Cha.wick M.G.Cha.ma. M.Cha.les.Ph.Cha.pentier C.a.Cha.ez Ba.a.a.0}M.Chefdeville C.Chen s.Chen a.Chernov s.Chernys.enko V.Choba.ova.s.Chola. M.Chrza.0}cz a.Chubykin V.Chulikov P.Cia.brone M.F.Cica.a.X.Cid Vida. G.Cieza.ek G.Ciullo P.E.L.Cla.ke M.Clemencic H.V.Cliff J.Clos.er J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera Centro Bra.0}leiro de Pes.uis.s.Fís.ca.0}CBPF) Rio de JaneiroBrazil Univers.da.e Federa. do Rio de Ja.eiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Phys.cs Tsinghua UniversityBeijingChina Ins.itute Of High Energy Phys.cs.IHEP) BeijingChina s.hool of Phys.cs.s.a.e Key La.ora.ory of Nuclea. Phys.cs.a.d Technology Peking UniversityBeijingChina Univers.ty of Chines. a.a.emy of s.iences BeijingChina Ins.itute of Pa.ticle Phys.cs Central China Normal UniversityWuhanHubeiChina Univers.té s.voie Mont Bla.c CNRSIN2P3-LAPPAnnecyFrance Univers.téClermont a.vergne CNRS/IN2P3LPCClermont-FerrandFrance a.x Ma.s.ille Univ CNRS/IN2P3CPPMMarseilleFrance Univers.téPa.is.s.cla. CNRS/IN2P3IJCLabOrsayFrance La.ora.oire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Phys.ka.is.hes.Ins.itut RWTH Aachen UniversityAachenGermany Fa.ulta. Phys.k Technische Universitat DortmundDortmundGermany Ma.-Pla.ck-Ins.itut für Kernphys.k(MPIK) HeidelbergGermany Phys.ka.is.hes.Ins.itut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany s.hool of Phys.cs University College DublinDublinIreland INFN s.zione di Ba.i BariItaly INFN s.zione di Bologna BolognaItaly INFN s.zione di Ferra.a FerraraItaly INFN s.zione di Firenze FirenzeItaly INFN La.ora.ori Na.iona.i di Fra.0}a.i FrascatiItaly INFN s.zione di Genova GenovaItaly INFN s.zione di Mila.o MilanoItaly INFN s.zione di Mila.o-Bicocca MilanoItaly INFN s.zione di Ca.lia.i MonserratoItaly Univers.tàdegli s.udi di Pa.ova Universitàe INFNPadovaPadovaItaly INFN s.zione di Pis. PisaItaly INFN s.zione di Roma.La.s.pienza RomaItaly INFN s.zione di Roma.Tor Verga.a RomaItaly Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs AmsterdamNetherlands Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs.a.d VU Univers.ty a.s.erda. AmsterdamNetherlands a.H-Univers.ty of s.ience a.d Technology Faculty of Physics and Applied Computer Scienc

a.s.a.ch for the ra.e deca.s.W^(+)→D_(s.^(+)γ a.d Z→D0γis.performed us.ng proton-proton collis.on da.a.collected by the LHCb experiment a. a.centre-of-ma.0} energy of 13TeV,corres.onding to a. integra.ed luminos.ty of 2.0fb−*** s.gnifica.t s.gna. is.obs.rved for either deca. mode a.d upper limits.on their bra.ching fra.tions.a.e s.t us.ng W^(+)→D_(s.^(+)γ a.d Z→μ+μ−deca.s.a.0}norma.iza.ion *** upper limits.a.e 6.5×10^(−4) a.d 2.1×10^(−3) a. 95% confidence level for the W^(+)→D_(s.^(+)γ a.d Z→D^(0)γ deca. modes.*** is.the firs. reported s.a.ch for the Z→D^(0)γ deca.,while the upper limit on the W+→D+s.bra.ching fra.tion improves.upon the previous.bes. limit.

关键词： W/Z bos.n ra.e deca. upper limit of bra.ching fra.tion

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Evidence of a.J/ψΛs.ructure a.d obs.rva.ion of excited■^(-)s.a.es.in the■b^(-)→J/ψΛK^(-) deca.

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s.ience Bulletin 2021年第13期66卷 1278-1287,M0003页

作者： R.a.ij C.a.ellán Beteta.T.a.kernley B.a.eva.M.a.inolfi H.a.s.a.nia.C.a.a.da.a.s.a.ola.Z.a.a.touni s.a.a. J.a.brecht F.a.es.io M.a.exa.der a.a.fons. a.bero Z.a.iouche G.a.kha.ov P.a.va.ez Ca.telle s.a.a.o Y.a.his.L.a. L.a.derlini a.a.dreia.ov M.a.dreotti F.a.chilli a.a.ta.onov M.a.tus. K.a.zyma.ov E.a.0}a.ides.M.a.zeni B.a.durier s.Ba.hma.n M.Ba.hma.er J.J.Ba.k s.Ba.er P.Ba.a.ron Rodriguez V.Ba.a.ura.W.Ba.dini J.Ba.tis.a.Leite R.J.Ba.low s.Ba.s.k W.Ba.ter M.Ba.tolini F.Ba.ys.nikov J.M.Ba.0}ls.G.Ba.0}i B.Ba.s.kh a.Ba.tig a.Ba. M.Becker F.Bedes.hi I.Bedia.a.a.Beiter V.Bela.in s.Belin V.Bellee K.Belous.I.Belov I.Belya.v G.Bencivenni E.Ben-Ha.m a.Berezhnoy *** D.Berninghoff H.C.Berns.ein C.Bertella.E.Bertholet a.Bertolin C.Beta.court F.Betti Ia.Bezs.yiko s.Bha.0}n J.Bhom L.Bia. M.s.Bieker s.Bifa.i P.Billoir M.Birch F.C.R.Bis.op a.Bizzeti M.Bj┆rn M.P.Bla.o T.Bla.e F.Bla.c s.Blus. D.Bobuls.a.J.a.Boelha.ve O.Boente Ga.cia.T.Boettcher a.Boldyrev a.Bonda. N.Bonda. s.Borghi M.Boris.a. M.Bors.to J.T.Bors.k s.a.bouchiba T.J.V.Bowcock a.Boyer C.Bozzi M.J.Bra.ley s.Bra.n a.Brea.Rodriguez M.Brods.i J.Brodzicka.a.Bros.a.Gonza.o D.Brundu a.Buona.ra.C.Burr a.Burs.he a.Butkevich J.s.Butter J.Buyta.rt W.Byczyns.i s.Ca.eddu H.Ca. R.Ca.a.res. L.Ca.efice L.Ca.ero Dia. s.Ca.i R.Ca.la.ine M.Ca.vi M.Ca.vo Gomez P.Ca.a.go Ma.a.ha.s.a.Ca.boni P.Ca.pa.a.a.F.Ca.poverde Queza.a.s.Ca.elli L.Ca.riotti a.Ca.bone G.Ca.boni R.Ca.dina.e a.Ca.dini I.Ca.li P.Ca.niti L.Ca.us.K.Ca.va.ho a.iba.a.Ca.0}is.Vida. G.Ca.0}e M.Ca.ta.eo G.Ca.a.lero s.Cela.i J.Cera.0}li a.J.Cha.wick M.G.Cha.ma. M.Cha.les.Ph.Cha.pentier G.Cha.zikons.a.tinidis.C.a.Cha.ez Ba.a.a.0}M.Chefdeville C.Chen s.Chen a.Chernov s.-G.Chitic V.Choba.ova.s.Chola. M.Chrza.0}cz a.Chubykin V.Chulikov P.Cia.brone M.F.Cica.a.X.Cid Vida. G.Cieza.ek P.E.L.Cla.ke M.Clemencic H.V.Cliff J.Clos.er J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera.0}L.Cojoca.iu P.Collins.T.Colombo L.Congedo a.Contu N.Cooke G.Coombs.G.Corti C.M.Cos.a.s.bra. B.Couturier D.C.Cra.k J.Crkovs.á M.Cruz Torres.R.Currie C.L.Da.s.lva.E.Da.l’ Centro Bra.0}leiro de Pes.uis.s.Fís.ca.0}CBPF) Rio de JaneiroBrazil Univers.da.e Federa. do Rio de Ja.eiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Phys.cs Tsinghua UniversityBeijingChina s.hool of Phys.cs.s.a.e Key La.ora.ory of Nuclea. Phys.cs.a.d Technology Peking UniversityBeijingChina Univers.ty of Chines. a.a.emy of s.iences BeijingChina Ins.itute Of High Energy Phys.cs.IHEP) BeijingChina Ins.itute of Pa.ticle Phys.cs Central China Normal UniversityWuhanHubeiChina Univ.Grenoble a.pes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Univers.téClermont a.vergne CNRS/IN2P3LPCClermont-FerrandFrance a.x Ma.s.ille Univ CNRS/IN2P3CPPMMarseilleFrance Univers.téPa.is.s.cla. CNRS/IN2P3IJCLabOrsayFrance La.ora.oire Leprince-ringuet(llr) PalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Phys.ka.is.hes.Ins.itut RWTH Aachen UniversityAachenGermany Fa.ultät Phys.k Technische Universität DortmundDortmundGermany Ma.-Pla.ck-Ins.itut für Kernphys.k(MPIK) HeidelbergGermany Phys.ka.is.hes.Ins.itut Ruprecht-Karls-Universität HeidelbergHeidelbergGermany s.hool of Phys.cs University College DublinDublinIreland INFN s.zione di Ba.i BariItaly INFN s.zione di Bologna BolognaItaly INFN s.zione di Ferra.a FerraraItaly INFN s.zione di Firenze FirenzeItaly INFN La.ora.ori Na.iona.i di Fra.0}a.i FrascatiItaly INFN s.zione di Genova GenovaItaly INFN s.zione di Mila.o-Bicocca MilanoItaly INFN s.zione di Mila.o MilanoItaly INFN s.zione di Ca.lia.i MonserratoItaly Univers.ta.degli s.udi di Pa.ova Universita e INFNPadovaPadovaItaly INFN s.zione di Pis. PisaItaly INFN s.zione di Roma.Tor Verga.a RomaItaly INFN s.zione di Roma.La.s.pienza RomaItaly Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs AmsterdamNetherlands Nikhef Na.iona. Ins.itute for s.ba.omic Phys.cs.a.d VU Univers.ty a.s.erda. AmsterdamNetherlands Henryk Niewodnicza.s.i Ins.itute of Nuclea. Phys.cs.Polis. a.a.emy of s.iences KrakówPoland a.H-Univers.ty of s.ience a.d Techno

Firs. evidence of a.s.ructure in the J/ψΛinva.ia.t ma.0} dis.ribution is.obta.ned from a. a.plitude a.a.ys.s.of■b^(-)J/ψΛK^(-)*** obs.rved s.ructure is.cons.s.ent with being due to a.cha.monium penta.ua.k with s.ra.genes. with a.s.gnifica.ce of 3.1r including s.s.ema.ic uncerta.nties.a.d lookels.where *** ma.0} a.d width a.e determined to be 4458:8±2:9t4:7-1:1 MeV a.d 17:3±6:5t8:0-5:7 MeV,res.ectively,where the quoted uncerta.nties.a.e s.a.is.ica. a.d *** s.ructure is.a.s. cons.s.ent with being due to two *** a.dition,the na.row excited■^(-)s.a.es.N■(1690)a.d■(1820),a.e s.en for the firs. time in a.b^(-)deca.,a.d their ma.0}es.a.d widths.a.e mea.0}red with improved *** a.a.ys.s.is.performed us.ng pp collis.on da.a.corres.onding to a.tota. integra.ed luminos.ty of 9 fb^(-1),collected with the LHCb experiment a. centre-of-ma.0} energies.of 7,8 a.d 13 TeV.

关键词： QCD Exotics Penta.ua.k s.ectros.opy Qua.konium Pa.ticle a.d res.na.ce production

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