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measurement of the integrated luminosity of the Phase 2 data of the Belle Ⅱ experiment

Chinese Physics C 2020年第2期44卷 1-12页

作者： F.Abudinén I.Adachi P.Ahlburg H.Aihara N.Akopov A.Aloisio F.Ameli l.Andricek N.Anh Ky D.m.Asner H.Atmacan T.Aushev V.Aushev T.Aziz K.Azmi V.Babu S.Baehr S.Bahinipati A.m.Bakich P.Bambade Sw.Banerjee S.Bansal V.Bansal m.Barrett J.Baudot A.Beaulieu J.Becker P.K.Behera J.V.Bennett E.Bernieri F.U.Bernlochner m.Bertemes m.Bessner S.Bettarini V.Bhardwaj F.Bianchi T.Bilka S.Bilokin D.Biswas G.Bonvicini A.Bozek m.Bračko P.Branchini N.Braun T.E.Browder A.Budano S.Bussino m.Campajola l.Cao G.Casarosa C.Cecchi D.Červenkov m.-C.Chang P.Chang R.Cheaib V.Chekelian Y.Q.Chen Y.-T.Chen B.G.Cheon K.Chilikin H.-E.Cho K.Cho S.Cho S.-K.Choi S.Choudhury D.Cinabro l.Corona l.m.Cremaldi S.Cunliffe T.Czank F.Dattola E.De la Cruz-Burelo G.De Nardo m.De Nuccio G.De Pietro R.de Sangro m.Destefanis S.Dey A.De Yta-Hernandez F.Di Capua S.Di Carlo J.Dingfelder Z.Doležal I.Domínguez Jiménez T.V.Dong K.Dort S.Dubey S.Duell S.Eidelman m.Eliachevitch T.Ferber D.Ferlewicz G.Finocchiaro S.Fiore A.Fodor F.Forti A.Frey B.G.Fulsom m.Gabriel E.Ganiev m.Garcia-Hernandez R.Garg A.Garmash V.Gaur A.Gaz U.Gebauer A.Gellrich J.Gemmler T.Geßler R.Giordano A.Giri B.Gobbo R.Godang P.Goldenzweig B.Golob P.Gomis P.Grace W.Gradl E.Graziani D.Greenwald C.Hadjivasiliou S.Halder K.Hara T.Hara O.Hartbrich K.Hayasaka H.Hayashii C.Hearty m.T.Hedges I.Heredia de la Cruz m.Hernández Villanueva A.Hershenhorn T.Higuchi E.C.Hill H.Hirata m.Hoek S.Hollitt T.Hotta C.-l.Hsu Y.Hu K.Huang T.Iijima K.Inami G.Inguglia J.Irakkathil Jabbar A.Ishikawa R.Itoh m.Iwasaki Y.Iwasaki S.Iwata P.Jackson W.W.Jacobs D.E.Jaffe E.-J.Jang H.B.Jeon S.Jia Y.Jin C.Joo J.Kahn H.Kakuno A.B.Kaliyar G.Karyan Y.Kato T.Kawasaki H.Kichimi C.Kiesling B.H.Kim C.-H.Kim D.Y.Kim S.-H.Kim Y.K.Kim Y.Kim T.D.Kimmel K.Kinoshita C.Kleinwort B.Knysh P.Kodyš T.Koga I.Komarov T.Konno S.Korpar D.Kotchetkov N.Kovalchuk T.m.G.Kraetzschmar P.Križan R.Kroeger J.F.Krohn P.Krokovny W.Kuehn T.Kuhr m.Kumar R.Kumar K.Kumara S.Kurz A.Kuzmin Y.-J.Kwon S.lacaprara Y.-T.lai C.la licata K.lalwani l.lanceri J.S.lange K.lautenbach I.-S.le Beihang University Beijing 100191 Brookhaven National laboratory UptonNew York 11973 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional Mexico City 07360 Faculty of mathematics and Physics Charles University12116 Prague Chiba University Chiba 263-8522 Consejo Nacional de Ciencia y Tecnología Mexico City 03940 Deutsches Elektronen–Synchrotron 22607 Hamburg Duke University DurhamNorth Carolina 27708 Earthquake Research Institute University of TokyoTokyo 113-0032 Forschungszentrum Jülich 52425 Jülich Department of Physics Fu Jen Catholic UniversityTaipei 24205 Key laboratory of Nuclear Physics and Ion-beam Application(mOE)and Institute of modern Physics Fudan UniversityShanghai 200443 II.Physikalisches Institut Georg-August-Universität Göttingen37073 Göttingen Gifu University Gifu 501-1193 The Graduate University for Advanced Studies(SOKENDAI) Hayama 240-0193 Gyeongsang National University Jinju 52828 Department of Physics and Institute of Natural Sciences Hanyang UniversitySeoul 04763 High Energy Accelerator Research Organization(KEK) Tsukuba 305-0801 J-PARC Branch KEK Theory CenterHigh Energy Accelerator Research Organization(KEK)Tsukuba 305-0801 Indian Institute of Science Education and Research mohali SAS Nagar140306 Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Indian Institute of Technology Hyderabad Telangana 502285 Indian Institute of Technology madras Chennai 600036 Indiana University BloomingtonIndiana 47408 Institute for High Energy Physics Protvino 142281 Institute of High Energy Physics Vienna 1050 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049 Institute of Particle Physics(Canada) VictoriaBritish Columbia V8W 2Y2 Institute of Physics Hanoi Instituto de Fisica Corpuscular Paterna 46980 INFN laboratori Nazionali di Frascati I-00044 Frascati INFN Sezione di Napoli I-80126 Napoli INFN Sezione di Padova I-35131 Padova INFN Sezione di Perugia I-06123 Perugia

From April to July 2018,a data sample at the peak energy of the T(4 S) resonance was collected with the Belle Ⅱ detector at the SuperKEKB electron-positron *** is the first data sample of the Belle Ⅱ *** Bhabha and digamma events,we measure the integrated luminosity of the data sample to be(496.3±0.3±3.0) pb-1,where the first uncertainty is statistical and the second is *** work provides a basis for future luminosity measurements at Belle Ⅱ.

关键词： luminosity Bhabha digamma Belle II

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VEPP-2000正负电子对撞机上CmD-3物理结果综述（英文）

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中国科学技术大学学报 2016年第4期46卷 259-271页

作者： FEDOTOVICH G.V. AmIRKHANOV A.N. ANISENKOV A.V. AUlCHENKO V.m. BANZAROV V.S. BASHTOVOY N.S. BONDAR A.E. BRAGIN A.V. EIDElmAN S.I. EPIFANOV D.A. EPSHTEYN l.B. EROFEEV A.l. GAYAZOV S.E. GREBENUK A.A. GRIBANOV S.S. GRIGORIEV D.N. IGNATOV F.V. IVANOV V.l. KARPOV S.V. KAZANIN V.F. KOROBOV A.A. KOVAlENKO O.A. KOZYREV A.N. KOZYREV E.A. KROKOVNY P.P. KUZmENKO A.E. KUZmIN A.S. lOGASHENKO I.B. lUKIN P.A. mIKHAIlOV K.Yu. OKHAPKINV.S. PESTOVYu.N. popov A.S. RAZUVAEV G.P. RUBAN A.A. RYSKUlOV N.m. RYZHENENKOV A.E. SHEBAlIN V.E. SHEmYAKIN D.N. SHWARTZ B.A. SIBIDANOV A.l. SHATUNOV Yu.m. SOlODOV E.P. TITOV V.m. TAlYSHEV A.A. VOROBIOV A.I. YUDIN Yu.V. 布德克尔核物理研究所新西伯利亚州立大学新西伯利亚州立理工大学悉尼大学物理学院福基纳高能物理系

2010年12月VEPP-2000正负电子对撞机上的CmD-3探测器开始运行.在质心系能量区间0.32~2GeV范围内,已经获取了积分亮度约为60pb-1的数据.目前已经得到多种强子末态截面的初步结果,尤其是e^+e^-→π^+π^-,π^+π^-π~0,K_lK_S,K^+K^-,ηγ... 详细信息

2010年12月VEPP-2000正负电子对撞机上的CmD-3探测器开始运行.在质心系能量区间0.32~2GeV范围内,已经获取了积分亮度约为60pb-1的数据.目前已经得到多种强子末态截面的初步结果,尤其是e^+e^-→π^+π^-,π^+π^-π~0,K_lK_S,K^+K^-,ηγ,3(π^+π^-),2(π^+π^-π~0),K^+K^-π^+π^-,K^+K^-η,K^+K^-π0,ηπ^+π^-,ωπ^+π^-和ω→π~0e^+e^-.为正确描述角分布和不变质量分布及截面分布,多强子末态过程必须考虑其中间共振态.

关键词：强子信号/本底分离截面

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Search for the doubly charmed baryon ?cc+

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Science China(Physics,mechanics & Astronomy) 2021年第10期Mechanics & Astronomy) .卷 6-17页

作者： R. Aaij C. Abellán Beteta T. Ackernley B. Adeva m. Adinolfi H. Afsharnia C. A. Aidala S. Aiola Z. Ajaltouni S. Akar J. Albrecht F. Alessio m. Alexander A. Alfonso Albero Z. Aliouche G. Alkhazov P. Alvarez Cartelle S. Amato Y. Amhis l. An l. Anderlini A. Andreianov m. Andreotti F. Archilli A. Artamonov m. Artuso K. Arzymatov E. Aslanides m. Atzeni B. Audurier S. Bachmann m. Bachmayer J. J. Back P. Baladron Rodriguez V. Balagura W. Baldini J. Baptista leite R. J. Barlow S. Barsuk W. Barter m. Bartolini F. Baryshnikov J. m. Basels G. Bassi B. Batsukh A. Battig A. Bay m. Becker F. Bedeschi I. Bediaga A. Beiter V. Belavin S. Belin V. Bellee K. Belous I. Belov I. Belyaev G. Bencivenni E. Ben-Haim A. Berezhnoy R. Bernet D. Berninghoff H. C. Bernstein C. Bertella A. Bertolin C. Betancourt F. Betti I. Bezshyiko S. Bhasin J. Bhom l. Bian m. S. Bieker S. Bifani P. Billoir m. Birch F. C. R. Bishop A. Bitadze A. Bizzeti m. Bj?rn m. P. Blago T. Blake F. Blanc S. Blusk D. Bobulska J. A. Boelhauve O. Boente Garcia T. Boettcher A. Boldyrev A. Bondar N. Bondar S. Borghi m. Borisyak m. Borsato J. T. Borsuk S. A. Bouchiba T. J. V. Bowcock A. Boyer C. Bozzi m. J. Bradley S. Braun A. Brea Rodriguez m. Brodski J. Brodzicka A. Brossa Gonzalo D. Brundu A. Buonaura C. Burr A. Bursche A. Butkevich J. S. Butter J. Buytaert W. Byczynski S. Cadeddu H. Cai R. Calabrese l. Calefice l. Calero Diaz S. Cali R. Calladine m. Calvi m. Calvo Gomez P. Camargo magalhaes P. Campana A. F. Campoverde Quezada S. Capelli l. Capriotti A. Carbone G. Carboni R. Cardinale A. Cardini I. Carli P. Carniti l. Carus K. Carvalho Akiba A. Casais Vidal G. Casse m. Cattaneo G. Cavallero S. Celani J. Cerasoli A. J. Chadwick m. G. Chapman m. Charles P. Charpentier G. Chatzikonstantinidis C. A. Chavez Barajas m. Chefdeville C. Chen S. Chen A. Chernov V. Chobanova S. Cholak m. Chrzaszcz A. Chubykin V. Chulikov P. Ciambrone m. F. Cicala X. Cid Vidal G. Ciezarek P. E. l. Clarke m. Clemencic H. V. Clif J. Closier J. l. Cobbledick V. Coco J. A. B. Coelho J. Cogan E. Cogneras l. Nikhef National Institute for Subatomic Physics Physik-Institut Universit?t Zürich Oliver lodge laboratory University of liverpool Instituto Galego de Física de Altas Enerxías (IGFAE) Universidade de Santiago de Compostela H.H. Wills Physics laboratory University of Bristol Université Clermont Auvergne University of michigan Ann Arbor United States INFN Sezione di milano University of Cincinnati Fakult?t Physik Technische Universit?t Dortmund European Organization for Nuclear Research (CERN) School of Physics and Astronomy University of Glasgow ICCUB Universitat de Barcelona Department of Physics and Astronomy University of manchester Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI) Cavendish laboratory University of Cambridge Universidade Federal do Rio de Janeiro (UFRJ) Université Paris-Saclay INFN Sezione di Firenze INFN Sezione di Ferrara Physikalisches Institut Ruprecht-Karls-Universit?t Heidelberg Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI) Syracuse University Yandex School of Data Analysis Aix marseille Univ laboratoire leprince-Ringuet CNRS/IN2P3 Ecole Polytechnique Institut Polytechnique de Paris Institute of Physics Ecole Polytechnique Fédérale de lausanne (EPFl) Department of Physics University of Warwick Centro Brasileiro de Pesquisas Físicas (CBPF) Imperial College london INFN Sezione di Genova National University of Science and Technology “mISIS” I. Physikalisches Institut RWTH Aachen University INFN Sezione di Pisa INFN Sezione di Cagliari Institute of Nuclear Physics moscow State University (SINP mSU) Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI) INFN laboratori Nazionali di Frascati lPNHE Sorbonne Université Paris Diderot Sorbonne Paris Cité Universita degli Studi di Padova Universita e INFN Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences School of Physics and Technology Wuhan University University of Birmingham Università di modena e Reggio Emilia Department of Physics U

A search for the doubly charmed baryon ?cc+with the decay mode ?cc+→Ξc+K-π+is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the lHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4 fb-1. No significant signal is observed within the invariant mass range of 3.6 to 4.0 GeV/c2. Upper limits are set on the ratio R of the production cross-section times the total branching fraction of the ?cc+→Ξc+K-π+decay with respect to the Ξcc++→Λc+K-π+π+decay. Upper limits at 95% credibility level for R in the range 0.005 to 0.11 are obtained for diferent hypotheses on the ?cc+mass and lifetime in the rapidity range from 2.0 to 4.5 and transverse momentum range from 4 to 15 GeV/c.

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用CmD-3谱仪研究VEPP-2000对撞机上的e^+e^-→K^+K^-η过程（英文）

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中国科学技术大学学报 2016年第6期46卷 502-506页

作者： IVANOV V.l. AmIRKHANOV A.N. ANISENKOV A.V. AUlCHENKO V.m. BANZAROV V.S. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAGIN A.V. EIDElmAN S.I. EPIFANOV D.A. EPSHTEYN l.B. EROFEEV A.l. FEDOTOVICH G.V. GAYAZOV S.E. GREBENUK A.A. GRIBANOV S.S. GRIGORIEV D.N. IGNATOV F.V. KARPOV S.V. KAZANIN V.F. KOROBOV A.A. KOVAlENKO O.A. KOZYREV A.N. KOZYREV E.A. KROKOVNY P.P. KUZmENKO A.E. KUZmIN A.S. lOGASHENKO I.B. lUKIN P.A. mIKHAIlOV K.YU. OKHAPKIN V.S. PESTOVY U.N. popov A.S. RAZUVAEV G.P. RUBAN A.A. RYSKUlOV N.m. RYZHENENKOV A.E. SHEBAlIN V.E. SHEmYAKIN D.N. SHWARTZ B.A. SIBIDANOV A.l. SHATUNOVY U.m. SOlODOV E.P. TITOV V.m. TAlYSHEV A.A. VOROBIOV A.I. YUDINY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

报道了用CmD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CmD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 Ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模... 详细信息

报道了用CmD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CmD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 Ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模式,选出的事例总数为1454±48.测量的截面近似为Ф(1680)和非共振振幅按照矢量介子主导模型的叠加,并得到了Ф(1680)介子共振参数的初步结果.

关键词：强子信号/本地分离截面

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Evidence of a J/ψΛstructure and observation of excited■^(-)states in the■b^(-)→J/ψΛK^(-) decay

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Science Bulletin 2021年第13期66卷 1278-1287,M0003页

作者： R.Aaij C.Abellán Beteta T.Ackernley B.Adeva m.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio m.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis l.An l.Anderlini A.Andreianov m.Andreotti F.Archilli A.Artamonov m.Artuso K.Arzymatov E.Aslanides m.Atzeni B.Audurier S.Bachmann m.Bachmayer J.J.Back S.Baker P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista leite R.J.Barlow S.Barsuk W.Barter m.Bartolini F.Baryshnikov J.m.Basels G.Bassi B.Batsukh A.Battig A.Bay m.Becker F.Bedeschi I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy *** D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom l.Bian m.S.Bieker S.Bifani P.Billoir m.Birch F.C.R.Bishop A.Bizzeti m.Bj┆rn m.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi m.Borisyak m.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi m.J.Bradley S.Braun A.Brea Rodriguez m.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese l.Calefice l.Calero Diaz S.Cali R.Calladine m.Calvi m.Calvo Gomez P.Camargo magalhaes A.Camboni P.Campana A.F.Campoverde Quezada S.Capelli l.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti l.Carus K.Carvalho Akiba A.Casais Vidal G.Casse m.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick m.G.Chapman m.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas m.Chefdeville C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Cholak m.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone m.F.Cicala X.Cid Vidal G.Ciezarek P.E.l.Clarke m.Clemencic H.V.Cliff J.Closier J.l.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras l.Cojocariu P.Collins T.Colombo l.Congedo A.Contu N.Cooke G.Coombs G.Corti C.m.Costa Sobral B.Couturier D.C.Craik J.Crkovská m.Cruz Torres R.Currie C.l.Da Silva E.Dall’ Centro Brasileiro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Universidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina School of Physics State Key laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute Of High Energy Physics(IHEP) BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix marseille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance laboratoire leprince-ringuet(llr) PalaiseauFrance lPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultät Physik Technische Universität DortmundDortmundGermany max-Planck-Institut für Kernphysik(mPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universität HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Bari BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferrara FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN laboratori Nazionali di Frascati FrascatiItaly INFN Sezione di Genova GenovaItaly INFN Sezione di milano-Bicocca MilanoItaly INFN Sezione di milano MilanoItaly INFN Sezione di Cagliari MonserratoItaly Universita degli Studi di Padova Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma Tor Vergata RomaItaly INFN Sezione di Roma la Sapienza RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences KrakówPoland AGH-University of Science and Techno

First evidence of a structure in the J/ψΛinvariant mass distribution is obtained from an amplitude analysis of■b^(-)J/ψΛK^(-)*** observed structure is consistent with being due to a charmonium pentaquark with strangeness with a significance of 3.1r including systematic uncertainties and lookelsewhere *** mass and width are determined to be 4458:8±2:9t4:7-1:1 meV and 17:3±6:5t8:0-5:7 meV,respectively,where the quoted uncertainties are statistical and *** structure is also consistent with being due to two *** addition,the narrow excited■^(-)states,N■(1690)and■(1820),are seen for the first time in a■b^(-)decay,and their masses and widths are measured with improved *** analysis is performed using pp collision data corresponding to a total integrated luminosity of 9 fb^(-1),collected with the lHCb experiment at centre-of-mass energies of 7,8 and 13 TeV.

关键词： QCD Exotics Pentaquark Spectroscopy Quarkonium Particle and resonance production

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VEPP-2000 e^+e^-对撞机上用CmD-3探测器测量e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-的截面（英文）

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中国科学技术大学学报 2016年第6期46卷 514-522页

作者： popov A.S. AKHmETSHIN R.R. AmIRKHANOV A.N. ANISENKOV A.V. AUlCHENKO V.m. BANZAROV V.S. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAGIN A.V. EIDElmAN D.E. EPIFANOV D.A. EPSHTEYN l.B. EROFEEV A.l. FEDOTOVICH G.V. GAYAZOV S.E. GREBENUK A.A. GRIBANOV S.S. GRIGORIEV D.N. GROmOV E.m. IGNATIN F.V. IVANOV V.l. KARPOV S.V. KASAEV A.S. KORPOTIN A.N. KOOP I.A. KOVAlENKO O.A. KAZANIN V.F. KOZYREV A.N. KOZYREV E.A. KROKOVNY P.P. KUZmENKO A.E. KUZmIN A.S. lOGASHENKO I.B. lIKIN P.A. mIKHAIlOV K.YU. OKHAPKIN V.S. OTBOEV A.V. PESTOVY U.N. PIVOVAROV S.G. RAZUVAEV G.P. ROmANOV A.l. RUBAN A.A. RYSKUlOV N.m. RYZHENENKOV A.E. SHEBAlIN V.E. SHEmYAKIN D.N. SHWARTZ B.A. SHWARTZ D.B. SIBIDANlOV A.l. SHATUNOV P.YU. SHATUNOVY U.m. SOlODOV E.P. TITOV V.m. TAlYSHEV A.A. VOROBIOV A.I.. YUDINY U.V. ZHARINOVY U.m. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学东京大学物理系国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在VEPP^-2000e^+e^-对撞机上,CmD^-3探测器研究了e^+e^-→ηπ^+π^-→γγπ^+π^-,e^+e^-→ηπ^+π^-→π0π^+π^-π^+π^-以及e^+e^-→ωπ^+π^-→π0π^+π^-π^+π^-等过程.分析使用的是2011和2012年在1.2^-2.0Ge V能区收集的相应积分亮度为3×104nb^-1的数据.用η→γγ道测量了e^+e^-→ηπ^+π^-的波恩截面,结果与相关的实验结论相吻合;还用末态η→π^+π^-π0和ω→π^+π^-π0分别得到了e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-波恩截面的初步结果;e^+e^-→ηπ^+π^-波恩截面的数值还被用于确定τ^-→ηπ^-π0ντ的衰变分支比.

关键词：截面 ηπ+π- ωπ+π- 强子 τ

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CmD-3实验π介子形状因子的初步结果（英文）

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中国科学技术大学学报 2016年第4期46卷 323-330页

作者： AKHmETSHIN R.R. AmIRKHANOV A.N. ANISENKOV A.V. AUlCHENKO V.m. BANZAROV V.Sh. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAGIN A.V. FEDOTOVICH G.V. EIDElmAN S.I. EPIFANOV D.A. EPSHTEYN l.B. EROFEEV A.l. GAYAZOV S.E. GREBENUKV A.A. GRIBANOVV S.S. GRIGORIEV D.N. IGNATOV F.V. IVANOV V.l. KARPOV S.V. KAZANIN V.F. KHAZIN B.I. KOOP I.A. KOROBOV A.A. KOVAlENKO O.A. KOZYREV A.N. KOZYREV E.A. KROKOVNY P.P. KUZmENKO A.E. KUZmIN A.S. lOGASHENKO I.B. lUKIN P.A. mIKHAIlOV K.Yu. OKHAPKIN V.S. PESTOV Yu.N. popov A.S. RAZUVAEV G.P. RUBAN A.A. RYSKUlOV N.m. RYZHENENKOV A.E. SHEBAlIN V.E. SHWARTZ B.A. SHWARTZ D.B. SIBIDANOV A.l. SHATUNOV Yu.m. SOlODOV E.P. SHEmYAKIN D.N. TITOV V.m. TAlYSHEV A.A. VOROBIOV A.I. YUDIN Yu.V. 布德克尔核物理研究所新西伯利亚州立大学新西伯利亚州立理工大学悉尼大学物理学院

自2010年12月起,坐落在正负电子对撞机VEPP-2000上的CmD-3探测器成功取数.2013年首次在对撞能量小于1GeV能区进行扫描,并获取积分亮度为18pb-1的数据.本文给出了e^+e^-→π^+π^-截面的初步结果.

关键词： π介子形状因子正负电子对撞机强子截面

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Study of the production of Λ_b^0 band ~0 hadrons in pp collisions and first measurement of the Λ_b^0→J/ψpK^- branching fraction

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Chinese Physics C 2016年第1期40卷 1-16页

作者： O.Kochebina m.Kolpin I.Komarov R.F.Koopman P.Koppenburg m.Kozeiha l.Kravchuk K.Kreplin m.Kreps G.Krocker P.Krokovny F.Kruse W.Krzemien W.Kucewicz m.Kucharczyk V.Kudryavtsev A.K.Kuonen K.Kurek T.Kvaratskheliya D.lacarrere G.lafferty A.lai D.lambert G.lanffanchi C.langenbruch B.langhans T.latham C.lazzeroni R.le Gac J.van leerdam J.-P.lees R.lefevre A.leflat J.lefrancois E.lemos Cid O.leroy T.lesiak B.leverington Y.li T.likhomanenko m.liles R.lindner C.linn F.lionetto B.liu X.liu D.loh I.longstaff J.H.lopes D.lucchesi m.lucio martinez H.luo A.lupato E.luppi O.lupton A.lusiani F.machefert F.maciuc O.maev K.maguire S.malde A.malinin G.manca G.mancinelli P.manning A.mapelli J.maratas J.F.marchand U.marconi C.marin Benito P.marino J.marks G.martellottil m.martin m.martinelli D.martinez Santos F.martinez Vidal D.martins Tostes A.massafferri R.matev A.mathad Z.mathe C.matteuzzi A.mauri B.maurin A.mazurov m.mcCann J.mcCarthy A.mcNab R.mcNulty B.meadows F.meier m.meissner D.melnychuk m.merk E michielin D.A.milanes m.-N.minard D.S.mitzel J.molina Rodrigue I.A.monroy S.monteil m.morandin P.morawski A.morda m.J.morello J.moron A.B.morris R.mountain F.muheim D.miiller J.muller K.muller V.muller m.mussini B.muster P.Naik T.Nakada R.Nandakumar A.Nandi I.Nasteva m.Needham N.Neri S.Neubert N.Neufeld m.Neuner A.D.Nguyen T.D.Nguyen C.Nguyen-mau V.Niess R.Niet N.Nikitin T.Nikodem D.Ninci A.Novoselov D.P.O'Hanlon A.Oblakowska-mucha V.Obraztsov S.Ogilvy O.Okhrimenko R.Oldeman C.J.G.Onderwater B.Osorio Rodrigues J.m.Otalora Goicochea A.Otto P.Owen A.Oyanguren A.Palano F.Palombo m.Palutan J.Panman A.Papanestis m.Pappagallo l.l.Pappalardo C.Pappenheimer C.Parkes G.Passaleva G.D.Patel m.Patel C.Patrignani A.Pearce A.Pellegrino G.Penso m.Pepe Altarelli S.Perazzini P.Perret l.Pescatore K.Petridis A.Petrolini m.Petruzzo E.Picatoste Olloqui B.Pietrzyk T:.Pilar D.Pinci A.Pistone A.Piucci S.Playfer m.Plo Casasus T.Poikela F.Polci A.Poluektov I.Polyakov E.Polycarpo A.popov D.popov B.popovici C.Potterat E.Price J.D.Price J.Prisciandaro A.Pritchard Centro Brasileiro de Pesquisas Ffsicas(CBPF) Rio de JaneiroBrazil Universidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina lAPP Universite Savoie Mont-BlancCNRS/IN2P3Annecy-Le-VieuxFrance Clermont Universite Universite Blaise PascalCNRS/IN2P3LPCclermont-FerrandFrance CPPm Aix-Marseille UniversitYCNRS/IN2P3MarseilleFrance lAl Universite Paris-SudCNRS/IN2P3OrsayFrance lPNHE Universite Pierre et Marie CurieUniversite Paris DiderotCNRS/IN2P3ParisFrance Fakultat Physik Technische Universitat DortmundDortmundGermany max-Planck-lnstitut fur Kernphysik(mPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland Sezione INFN di Bari BariItaly Sezione INFN di Bologna BolognaItaly Sezione INFN di Cagliari CagliariItaly Sezione INFN di Ferrara FerraraItaly Sezione INFN di Firenze FirenzeItaly laboratori Nazionali dell'INFN di Prascati FrascatiItaly Sezione INFN di Genova GenovaItaly Sezione INFN di milnno Bicocca MilunoItaly Sezione INFN di milano MilanoItaly Sezione INFN di Padova PadovaItaly Sezione INFN di Pisa PisaItaly Sezione INFN di Roma Tor Vergata RomaItaly Sezione INFN di Roma la Sapienza RomaItaly Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Krak6wPoland AGH-University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakowPoland National Center for Nuclear Research(NCBJ) WarsawPoland Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest-MagureleRomania Petersburg Nuclear Physics Institute(PNPI) GatchinaRussia Institute of Theoretical and Experimental Physics(ITEP) MoscowRussia Institute of Nuclear Physics Moscow State University(SINP MSU)MoscowRussia Institute for Nuclear Research of the Russian Academy of Sciences(INR RAN) MoscowRussia Budker Institute of Nuclear Physics(SB RAS)and Novosibirsk State University No

The product of the ∧0/b （-B/0） differential production cross-section and the branching fraction of the decay ∧0/b→ J/ψ pK-（-B/0→ J/ψ-K＊（892）0）is measured as a function of the beauty hadron transverse momentum, PT, and rapidity, y. The kinematic region of the measurements is pT〈20 GeV/c and 2.0 〈g〈*** measurements use a data sample corresponding to an integrated luminosity of 3fb-1 collected by the lHCb detector in pp collisions at centre-of-mass energies √s=7 TeV in 2011 and √s=8 TeV in 2012. Based on previous lHCb results of the fragmentation fraction ratio,f∧0/b/fd,the branching fraction of the decay ∧0/b→ J/ψ pK-is measured to be B（∧0/b→ J/ψ pK-）=（3.17±0.04±0.07±0.34＋0.45/-0.28）×10-4,where the first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the branching fraction of the decay -B/0 →J/ψ-K＊（892）0,and the fourth is due to the knowledge of f∧0/b/*** sum of the asymmetries in the production and decay between ∧0/b and ∧0/bis also measured as a function of PT and *** previously published branching fraction of ∧0/b→ J/ψ pπ-,relative to that of ∧0/b→ J/ψ pK-,is updated. The branching fractions of ∧0/b→P＋c（→ J/ψp）K-are determined.

关键词： production cross-section branching fraction b hadrons proton-proton collisions

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VEPP-2000 e^+e^-对撞机上用CmD-3谱仪研究1004-1060 meV能区的e^+e^-→K■过程（英文）

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中国科学技术大学学报 2016年第6期46卷 507-513页

作者： KOZYREV E.A. AmIRKHANOV A.N. ANISENKOV A.V. m.AUlCHENKO V. BANZAROV V.S. BASHTOVOY N.S. BERKAEV D.E. BONDAR A.E. BRAGIN A.V. EIDElmAN S.I. A.EPIFANOV D. EPSHTEYN l.B. EROFEEV A.l. FEDOTOVICH G.V. GAYAZOV S.E. GREBENUK A.A. GRIBANOV S.S. GRIGORIEV D.N. IGNATOV F.V. IVANOV V.l. KARPOV S.V. KASAEV A.S. KAZANIN V.F. IRPOTIN A.N. KOROBOV A.A. KOVAlENKO O.A. KOZYREV A.N. KOOP I.A. KROKOVNY P.P. KUZmENKO A.E. KUZmIN A.S. lOGASHENKO I.B. lUKIN P.A. mIKHAIlOV K.YU. OKHAPKIN V.S. OTBOEV A.V. PESTOVY U.N popov A.S. RAZUVAEV G.P. RUBAN A.A. RYSKUlOV N.m. RYZHENENKOV A.E. SENCHENKO A.I. SHEBAlIN V.E. SHEmYAKIN V.E. SHWARTZ A.S. SHWARTZ D.B. SIBIDANOV A.l. SHATUNOV P.YU. SHATUNOVY U.m. SOlODOV E.P. TITOV V.m. TAlYSHEV A.A. VOROBIOV A.I. YUDINY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在质心能量1004-1060me V之间的25个能量点测量了e^+e^-→K_S^0+K_l^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEPP-2000e^+e^-对撞机上CmD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其... 详细信息

在质心能量1004-1060me V之间的25个能量点测量了e^+e^-→K_S^0+K_l^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEPP-2000e^+e^-对撞机上CmD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其激发态按照矢量介子主导模型的叠加,得到了Ф(1020)介子的共振参数.

关键词：强子正负电子对撞机介子形状因子

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电磁感应对渗碳层生长动力学的影响

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热处理 2015年第5期30卷 32-36页

作者： m.O.Cojocaru D.Dragomir l.Druga 顾剑锋 Polytehnica'University BucharestRomania UTTIS VidraIlfovRomania 上海交通大学

提出了一种采用中高频感应加热来改善渗碳过程中硬化层生长动力学的方法。对21Ti mn Cr12(18HGT)钢在天然气中进行了中频(2000 Hz)感应加热渗碳的试验研究,结果表明渗碳过程得到了显著加快。对由专门设计的试验方案获得的数据进行了统... 详细信息

提出了一种采用中高频感应加热来改善渗碳过程中硬化层生长动力学的方法。对21Ti mn Cr12(18HGT)钢在天然气中进行了中频(2000 Hz)感应加热渗碳的试验研究,结果表明渗碳过程得到了显著加快。对由专门设计的试验方案获得的数据进行了统计处理,并在此基础上推导出了渗碳过程模型。基于菲克第二定律求解准则数,利用波波夫方法得出了这些工艺条件下的扩散系数和吸附速率常数,其数值约比在电阻炉中采用普通工艺所获得的数值高两个数量级(约10-5对10-7cm2·s-1数量级)。根据数学模型计算出的等性能场(一种由不同的加热方式和时间参数组合获得某固定渗层深度的图表形式)证明,感应渗碳大大加快了渗碳的动力学过程。

关键词：感应加热渗碳过程建模扩散系数吸附速率常数

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