检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

红鳍东方鲀仔鱼轮虫日摄食量的研究

水产科技 2003年第2期30卷 21-23页

作者：张海发王宏东王云新刘付永忠黄国光黄锦雄欧冲辉麦克兢广东省大亚湾水产试验中心惠州516081 广东省台山师范学校台山529200

为了解红鳍东方鲀仔鱼对轮虫的摄食量和昼夜摄食规律,我们对孵化16天的仔鱼进行轮虫日摄食量的试验。结果表明,16日龄的仔鱼,平均全长7.015mm,轮虫日摄食量为360个/尾,昼夜比例为79.0%和21.0%,在9:00到11:00及17:00到19:00出现摄食高峰。

关键词：红鳍东方鲀仔鱼轮虫日摄食量摄食规律

Prelimina.y Study by Environmenta. Indica.or Mea.urements of Sediments in a.Ma.grove Forest in Ilha.Gra.de bay, Rio de Ja.eiro, Southea.tern Bra.il

在线全文

学校读者我要写书评

暂无评论

Effect of condensa.iona. hea.ing over the bay of Benga.on the onset of the South China.Sea.monsoon in 1998

Journa. of Environmenta. Protection 2012年第8期

作者： a.a.Ma.ia.a. Velho Cla.dia.a. F. a.ub José L. Ma.zei Sérgio M. Corrêa.Mário L.G. Soa.es Isra.l Felzenszwa.b

来源：评论

学校读者我要写书评

暂无评论

Effect of condensational heating over the Bay of Bengalon th...

淹水条件下施加石灰和有机质对酸性土壤性质和磷吸附的影响

中国气象学会2006年年会“季风及其模拟”分会场

作者： C. Wu1, S. Ya.g2, a. Wa.g1, a.d S. Fong3 1 Depa.tment of the a.mospheric Sciences, Zhongsha. University, Gua.gzhou, China. NOa.’s Clima.e Prediction Center, Ca.p Springs, USa. Ma.a. Meteorologica. a.d Geophysica. Service, Ma.a., China

In this study, the a.thors a.a.yse the observa.iona.fea.ures of the onset of the South China.Sea.(SCS) mon-soon in 1998 shown in rea.a.ysis da.a.a.d use a.numerica.model to understa.d the mecha.isms r

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

土壤学报 1988年第2期 146-155页

作者：孟赐福袁嗣良浙江省农科院土壤肥料研究所美国佛罗里达大学土壤系

每公斤土加入2克碳酸钙和（或）三叶草的5个老成土和1个氧化土,在淹水培育45天后风干,结果发现:（1）淹水土壤风干,其pH比淹水时低,但仍比未淹水的高;（2）淹水降低了土壤中0.5MCuCl2提取的铝量,石灰和三叶草处理使3个轻质土中的铝量进... 详细信息

每公斤土加入2克碳酸钙和（或）三叶草的5个老成土和1个氧化土,在淹水培育45天后风干,结果发现:（1）淹水土壤风干,其pH比淹水时低,但仍比未淹水的高;（2）淹水降低了土壤中0.5MCuCl2提取的铝量,石灰和三叶草处理使3个轻质土中的铝量进一步降低,但3个粘质土则呈现相反的趋势;（3）改良剂使3个轻质土吸附的磷减少,而使3个粘质土吸附的磷增加。前者增加的原因是因为通过还原作用和氧化作用形成了较多的活性表面,而后者的减少则可能是粘粒表面所形成的水化氧化物胶膜堵塞了原有的吸附位,从而使吸附位减少（4）改良剂对磷解吸的影响,是降低了3个轻质土的磷解吸,而增加了3个粘质土的磷解吸;（5）经淹水风干处理土壤的磷吸附量与草酸盐提取的铁、铝、锰及CuCl2溶液提取的铝有很高的相关性,表明控制淹水土壤磷吸持的土壤组分,不仅包括无定形铁,而且也包括羟基铝聚合物。

关键词：磷吸附淹水条件有机质石灰

159例BRCa.和BRCa.携带者进行预防性输卵管卵巢切除术的临床和病理发现

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（妇产科学分册） 2006年第6期2卷 47-47页

作者： Finch a. Sha. P. Rosen B. S.a. Na.od 李奎 Centre for Resea.ch in Women' s Hea.th 790 Bay Street Toronto Ont. M5G 1N8 Canada

Objective. To estima.e the likelihood of occult ca.cer dia.nosis a. prophyla.tic oophorectomy in BRCa. a.d BRCa. ca.riers in different a.e groups a.d to determine the histopa.hology of these lesions. Methods. We describe a.series of 159 fema.e BRCa. or BRCa. ca.riers who underwent prophyla.tic oophorectomy a. the University Hea.th Network, Toronto from Ja.ua.y 1, 1992 to June 30, 2004. Results. Seven (4.4% ) occult ca.cers were detected a. pa.hologic exa.ina.ion. None of the 159 subjects ha. clinica. signs or symptoms of ova.ia. ca.cinoma.prior to, or a. the time of, surgery. Only two ca.cers were grossly visible a. surgery. There were 94 BRCa. ca.riers, of whom six were found to ha.e a. occult ca.cer (6.4% ). In contra.t, only one of the 65 BRCa. ca.riers wa. found to ha.e a. occult ca.cer (1.5% ). Three of the seven ca.es of occult ma.igna.cy involved the fa.lopia. tube a.d not the ova.ies. Conclusion. a.proxima.ely 6% of BRCa. ca.riers a.d 2% of BRCa. ca.riers who undergo prophyla.tic sa.pingo- oophorectomy will be found to ha.e occult ca.cinoma. if the ova.ies a.d tubes a.e rigorously exa.ined. a.significa.t proportion of these a.pea. to origina.e in the fa.lopia. tube. No ca.cers were detected a.ong women who ha. the opera.ion a. a.e 39 or younger.

关键词：预防性卵巢切除术 BRCa. BRCa. 输卵管卵巢切除术临床体征携带者组织病理学年龄

Detection a.d Cha.a.teriza.ion of the Cya.oba.teria.a.d Cya.opha.es of Ba.nega. bay,New Jersey

在线全文

学校读者我要写书评

暂无评论

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

Journa. of Environmenta. Protection 2019年第11期

作者： Roksa.a.M. Ra.ma. a.exa.dra.Greco a.isha.Na.da.Christia. Rios-Ruiz Ya. Wa.g Pa.l Yoon Dena.J. Resta.no John J. Ga.nor Pa.l a. X. Bologna.Tinchun Chu

来源：评论

学校读者我要写书评

暂无评论

中国物理C:英文版 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.son H.a.sha.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.essio M.a.exa.der a.a.fonso 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.dersson a.a.dreia.ov M.a.dreotti D.a.dreou D.a. F.a.chilli a.a.ta.onov M.a.tuso E.a.la.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.tista.de Souza.Leite M.Ba.betti R.J.Ba.low S.Ba.suk W.Ba.ter M.Ba.tolini F.Ba.yshnikov J.M.Ba.els G.Ba.si B.Ba.sukh a.Ba.tig a.bay a.Beck M.Becker F.Bedeschi 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.Bernstein C.Bertella.a.Bertolin C.Beta.court F.Betti Ia.Bezshyiko S.Bha.in J.Bhom L.Bia. M.S.Bieker N.V.Biesuz S.Bifa.i P.Billoir a.Biolchini M.Birch F.C.R.Bishop a.Bita.ze a.Bizzeti M.P.Bla.o T.Bla.e F.Bla.c J.E.Bla.k S.Blusk D.Bobulska.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.Borsa.o J.T.Borsuk S.a.Bouchiba.T.J.V.Bowcock a.Boyer C.Bozzi M.J.Bra.ley S.Bra.n a.Brea.Rodriguez J.Brodzicka.a.Brossa.Gonza.o J.Brown D.Brundu a.Buona.ra.L.Buonincontri a.T.Burke C.Burr a.Bursche a.Butkevich J.S.Butter J.Buyta.rt W.Byczynski S.Ca.eddu H.Ca. R.Ca.a.rese 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.a.s Vida. R.Ca.pa.y G.Ca.se M.Ca.ta.eo G.Ca.a.lero V.Ca.a.lini S.Cela.i J.Cera.oli D.Cervenkov a.J.Cha.wick M.G.Cha.ma. M.Cha.les Ph.Cha.pentier C.a.Cha.ez Ba.a.a. M.Chefdeville C.Chen S.Chen a.Chernov S.Chernyshenko V.Choba.ova.S.Chola. M.Chrza.zcz 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.Closier J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera Centro Bra.ileiro de Pesquisa. Física.(CBPF) Rio de JaneiroBrazil Universida.e Federa. do Rio de Ja.eiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina Institute Of High Energy Physics(IHEP) BeijingChina School of Physics Sta.e Key La.ora.ory of Nuclea. Physics a.d Technology Peking UniversityBeijingChina University of Chinese a.a.emy of Sciences BeijingChina Institute of Pa.ticle Physics Central China Normal UniversityWuhanHubeiChina Université Sa.oie Mont Bla.c CNRSIN2P3-LAPPAnnecyFrance UniversitéClermont a.vergne CNRS/IN2P3LPCClermont-FerrandFrance a.x Ma.seille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéPa.is-Sa.la. CNRS/IN2P3IJCLabOrsayFrance La.ora.oire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physika.isches Institut RWTH Aachen UniversityAachenGermany Fa.ulta. Physik Technische Universitat DortmundDortmundGermany Ma.-Pla.ck-Institut für Kernphysik(MPIK) HeidelbergGermany Physika.isches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Ba.i BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferra.a FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN La.ora.ori Na.iona.i di Fra.ca.i FrascatiItaly INFN Sezione di Genova GenovaItaly INFN Sezione di Mila.o MilanoItaly INFN Sezione di Mila.o-Bicocca MilanoItaly INFN Sezione di Ca.lia.i MonserratoItaly Universitàdegli Studi di Pa.ova Universitàe INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma.La.Sa.ienza RomaItaly INFN Sezione di Roma.Tor Verga.a RomaItaly Nikhef Na.iona. Institute for Suba.omic Physics AmsterdamNetherlands Nikhef Na.iona. Institute for Suba.omic Physics a.d VU University a.sterda. AmsterdamNetherlands a.H-University of Science a.d Technology Faculty of Physics and Applied Computer Scienc

a.sea.ch for the ra.e deca.s W^(+)→D_(s)^(+)γ a.d Z→D0γis performed using proton-proton collision da.a.collected by the LHCb experiment a. a.centre-of-ma.s energy of 13TeV,corresponding to a. integra.ed luminosity of 2.0fb−*** significa.t signa. is observed for either deca. mode a.d upper limits on their bra.ching fra.tions a.e set using W^(+)→D_(s)^(+)γ a.d Z→μ+μ−deca.s a. 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 first reported sea.ch for the Z→D^(0)γ deca.,while the upper limit on the W+→D+sγbra.ching fra.tion improves upon the previous best limit.

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

Sea.ch for the doubly hea.y ba.yons Ωbc0 a.d Ξbc0 deca.ing to Λc+π- a.d Ξc+π-

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics C 2021年第9期45卷 14-25页

作者： R.a.ij C.a.ellán Beteta.T.a.kernley B.a.eva.M.a.inolfi H.a.sha.nia.C.a.a.da.a.S.a.ola.Z.a.a.touni S.a.a. J.a.brecht F.a.essio M.a.exa.der a.a.fonso 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.tuso K.a.zyma.ov E.a.la.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.tista.Leite R.J.Ba.low S.Ba.suk W.Ba.ter M.Ba.tolini F.Ba.yshnikov J.M.Ba.els G.Ba.si B.Ba.sukh a.Ba.tig a.bay M.Becker F.Bedeschi 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.Bernstein C.Bertella.a.Bertolin C.Beta.court F.Betti Ia.Bezshyiko S.Bha.in J.Bhom L.Bia. M.S.Bieker S.Bifa.i P.Billoir M.Birch F.C.R.Bishop a.Bita.ze a.Bizzeti M.Bj?rn M.P.Bla.o T.Bla.e F.Bla.c S.Blusk D.Bobulska.J.a.Boelha.ve O.Boente Ga.cia.T.Boettcher a.Boldyrev a.Bonda. N.Bonda. S.Borghi M.Borisya. M.Borsa.o J.T.Borsuk S.a.Bouchiba.T.J.V.Bowcock a.Boyer C.Bozzi M.J.Bra.ley S.Bra.n a.Brea.Rodriguez M.Brodski J.Brodzicka.a.Brossa.Gonza.o D.Brundu a.Buona.ra.C.Burr a.Bursche a.Butkevich J.S.Butter J.Buyta.rt W.Byczynski S.Ca.eddu H.Ca. R.Ca.a.rese 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.a.s Vida. G.Ca.se M.Ca.ta.eo G.Ca.a.lero S.Cela.i J.Cera.oli a.J.Cha.wick M.G.Cha.ma. M.Cha.les Ph.Cha.pentier G.Cha.zikonsta.tinidis C.a.Cha.ez Ba.a.a. M.Chefdeville C.Chen S.Chen a.Chernov V.Choba.ova.S.Chola. M.Chrza.zcz 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.Closier J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera. L.Cojoca.iu P.Collins T.Colombo L.Congedo a.Contu N.Cooke G.Coombs G.Corti C.M.Costa.Sobra. B.Couturier D.C.Cra.k J.Crkovská M.Cruz Torres R.Currie C.L.Da.Silva.E.Da.l'Occo J.Da.seno C.D'a.b University of Edinburgh Horia.Hulubei Na.iona. Institute of Physics a.d Nuclea. Engineering INFN Sezione di Ba.i Università di Ba.i Los a.a.os Na.iona. La.ora.ory (La.L) Va. Swinderen Institute University of Groningen Universiteit Ma.stricht a.H-University of Science a.d Technology Fa.ulty of Physics a.d a.plied Computer Science Université Clermont a.vergne Università di Ca.lia.i Institute for Nuclea. Resea.ch of the Na.iona. a.a.emy of Sciences (KINR) School of Physics University College Dublin NSC Kha.kiv Institute of Physics a.d Technology (NSC KIPT) INFN Sezione di Perugia STFC Rutherford a.pleton La.ora.ory School of Physics a.d a.tronomy Mona.h University Novosibirsk Sta.e University CNRS/IN2P3 Depa.tment of Physics a.d a.tronomy Uppsa.a.University Università di Genova School of Physics Sta.e Key La.ora.ory of Nuclea. Physics a.d Technology Peking University Na.iona. Center for Nuclea. Resea.ch (NCBJ) Università di Roma.Tor Verga.a Pontifícia.Universida.e Ca.ólica.do Rio de Ja.eiro (PUC-Rio) Universida.e Federa. do Tria.gulo Mineiro (UFTM) Institute of Pa.ticle Physics LPC Centra. China.Norma. University Ha.gzhou Institute for a.va.ced Study UCa. Instituto de Fisica.Corpuscula. Centro Mixto Universida. de Va.encia.CSIC Nikhef Na.iona. Institute for Suba.omic Physics a.d VU University a.sterda. Na.iona. Resea.ch Tomsk Polytechnic University a.H-University of Science a.d Technology Fa.ulty of Computer Science Electronics a.d Telecommunica.ions University of Michiga. Università di Siena Università di Pa.ova Scuola.Norma.e Superiore Na.iona. Resea.ch Centre Kurcha.ov Institute Università degli Studi di Mila.o MSU-Iliga. Institute of Technology (MSU-IIT) Università di Firenze INFN Sezione di Roma.La.Sa.ienza Institut für Physik Universit?t Rostock INFN Sezione di Mila.o Depa.ta.ento de Fisica Universida. Na.iona. de Colombia Universit?t Bonn-Helmholtz-Institut für Stra.len und Kernphysik Ha.oi University of Science Università di Pisa P.N. Lebedev Physica. Institute Russia. a.a.emy of Science (LPI Ra.) Università

The first sea.ch for the doubly hea.y Ωbc0ba.yon a.d a.sea.ch for the Ξbc0ba.yon a.e performed using pp collision da.a.collected via.the LHCb experiment from 2016 to 2018 a. a.centre-of-ma.s energy of 13 TeV,corresponding to a. integra.ed luminosity of 5.2 *** ba.yons a.e reconstructed via.their deca.s to ∧c+π-a.dΞc+π-.No significa.t excess is found for inva.ia.t ma.ses between 6700 a.d 7300 MeV/c2,in a.ra.idity ra.ge from2.0 to 4.5 a.d a.tra.sverse momentum ra.ge from 2 to 20 MeV/*** limits a.e set on the ra.io of the Ωbc0a.dΞbc0production cross-section times the bra.ching fra.tion to ∧c+π-（Ξc+π-） rela.ive to tha. of the ∧b0（Ξb0） ba.yon,for different lifetime hypotheses,a. 95% confidence *** upper limits ra.ge from 0.5×10-4to 2.5×10-4for theΩbc0→∧c+π-(Ξbc0→∧c+π-) deca.,a.d from 1.4×10-3to 6.9×10-3for the Ωbc0→Ξc+π-(Ξbc0→Ξc+π-) deca.,depending on the considered ma.s a.d lifetime of the Ωbc0(Ξbc0) ba.yon.

关键词： B physics qua.konium spectroscopy hea.y qua.k production

Sea.ch for the ra.e deca. B^(0)→J/ψФ

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics 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.sha.nia. C.a.a.da.a.S.a.ola.Z.a.a.touni S.a.a. J.a.brecht F.a.essio M.a.exa.der a.a.fonso 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.tuso K.a.zyma.ov E.a.la.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.tista.Leite R.J.Ba.low S.Ba.suk W.Ba.ter M.Ba.tolini F.Ba.yshnikov J.M.Ba.els G.Ba.si B.Ba.sukh a.Ba.tig a.bay M.Becker F.Bedeschis 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.Bernstein C.Bertella.E.Bertholet a.Bertolin C.Beta.court F.Betti M.O.Bettler Ia.Bezshyiko S.Bha.in J.Bhom L.Bia. M.S.Bieker S.Bifa.i P.Billoir M.Birch F.C.R.Bishop a.Bizzeti M.Biorn M.P.Bla.o T.Bla.e F.Bla.c S.Blusk D.Bobulska.J.a.Boelha.ve O.Boente Ga.cia.T.Boettcher a.Boldyrev a.Bonda. N.Bonda. S.Borghi M.Borisya. M.Borsa.o J.T.Borsuk S.a.Bouchiba.T.J.V.Bowcock a.Boyer C.Bozzi M.J.Bra.ley S.Bra.n a.Brea.Rodriguezs M.Brodski J.Brodzicka.a.Brossa.Gonza.o D.Brundu a.Buona.ra.C.Burr a.Burschee a.Butkevich J.S.Butter J.Buyta.rt W.Byczynski S.Ca.eddu H.Ca. R.Ca.a.rese 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.a.s Vida. G.Ca.se M.Ca.ta.eo G.Ca.a.lero S.Cela.i J.Cera.oli a.J.Cha.wick M.G.Cha.ma. M.Cha.les Ph.Cha.pentier G.Cha.zikonsta.tinidis C.a.Cha.ez Ba.a.a. M.Chefdeville C.Chen S.Chen a.Chernov S.-G.Chitic V.Choba.ova.S.Chola. M.Chrza.zcz 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.Closier J.L.Cobbledick V.Coco J.a.B.Coelho J.Coga. E.Cognera. L.Cojoca.iu P.Collins T.Colombo L.Congedo a.Contu N.Cooke G.Coombs G.Corti C.M.Costa.Sobra. B.Couturier D.C.Cra.k J.Crkovska.M.Cruz Centro Bra.ileiro de Pesquisa. Fisica.(CBPF) Riode JaneiroBrazil Universida.e Federa. do Riode Ja.eiro(UFRJ) Riode JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School of Physics Sta.e Key La.ora.ory of Nuclea. Physics a.d Technology Peking UniversityBeijingChina University of Chinese a.a.emy of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BejingChina Institute of Pa.ticle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble a.pes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Clermont a.vergne CNRS/IN2P3LPCClermont-FerrandFrance a.x Ma.seille Univ CNRS/IN2P3CPPMMarseilleFrance Universitq Pa.is-Sa.la. CNRS/IN2P3IJCLabOrsayFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Physika.isches Institut RWTH Aachen UniversityAachenGermany Fa.ulta. Physik Technische Universitat DortmundDortmundGermany Ma.-Pla.ck-Institut fir Kernphysik(MPIK) HeidelbergGermany Physika.isches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Ba.i BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferra.a FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN La.ora.ori Na.iona.i di Fra.ca.i Frascatiltaly INFN Sezione di Genova GenovaItaly INFN Sezione di Mila.o Bicocca Milanolaly INFN Sezione di Mila.o MilanoItaly INFN Sezione di Ca.lia.i Monserratoltaly Universita.degli Studi di Pa.ova Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma.Tor Verga.a RomaItaly INFN Sezione di Roma.La.Sa.ienza RomaItaly Nikhef Na.iona. Institute for Suba.omic Physics AmsterdamNetherlands Nikhef Na.iona. Institute for Suba.omic Physics a.d VU University a.sterda. AmsterdamNetherlands Henryk Niewodnicza.ski Institute of Nuclea. Physics Polish a.a.emy of Sciences KrakowPoland a.H-University of Science a.d Technology Faculty of Physics and Applied Computer Science

a.sea.ch for the ra.e deca. B^(0)→J/ψФis performed using Pp collision da.a.collected with the LHCb dete-ctor a. centre-of-ma.s energies of 7,8 a.d 13 TeV,corresponding to a. integra.ed luminosity of9 *** significa.t signa. of the deca. is observed a.d a. upper limitof 1.1x 10^(-7)a. 90%confidence level is set on the bra.ching fra.tion.

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