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Comprehensive semen examination in patients with pancreatic-sufficient and pancreatic-insufficient cystic fibrosis

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Asian Journal of Andrology 2023年第5期25卷 591-597页

作者： Anna O Sedova Maria I Shtaut Elizaveta E Bragina Tatyana M Sorokina Galina V Shmarina Marina V Andreeva Lyubov E Kurilo Stanislav A Krasovskiy Aleksander V polyakov Vyacheslav B Chernykh Research Centre for Medical Genetics Russia Moscow 115522

We examined a cohort of 93 cystic fibrosis(Cf)male patients who were pancreatic-sufficient(PS-Cf;n=40)or pancreatic-insufficient(PI-Cf;n=53).Complex semen examination was performed,including standard semen analysis,quantitative karyological analysis(QKA)of immature germ cells(IGCs),transmission electronic microscopy(TEM),biochemical analysis,and sperm DNA fragmentation by terminal deoxynucleotidyl transferase-mediated dUTP nickend labeling(TUNEL)*** was diagnosed in 83(89.2%)*** other 10(10.8%)patients were found to be nonazoospermic and showed various spermatological diagnoses(asthenozoospermia,n=2;asthenoteratozoospermia,n=3;oligoasthenozoospermia,n=1;oligoasthenoteratozoospermia,n=3;and normozoospermia,n=1)with no specific morphological *** was detected in 89.2%azoospermic and 30.0%nonazoospermic *** seminal pH(found in 74(89.2%)of 83 azoospermic *** leukocytospermia(2.0×10^(6)-2.2×10^(6)ml^(-1))was revealed in 2.4%azoospermic and 40.0%nonazoospermic semen *** signs of partial meiotic arrest at prophase I were found in 4 of 6 nonazoospermic patients examined by QKA of *** content of fructose and citrate was low in oligospermic and normal in nonoligospermic semen *** increased percentage(>30%)of spermatozoa with noncondensed(“immature”)chromatin was revealed in 2 of 6 nonazoospermic semen samples analyzed by TEM.

关键词： congenital bilateral agenesia/aplasia of vas deferens cystic fibrosis cystic fibrosis transmembrane conductance regulator gene semen spermatozoa

A Review of Arctic-Subarctic Ocean Linkages: Past Changes, Mechanisms, and future Projections

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Ocean-Land-Atmosphere Research 2023年第1期2卷 134-172页

作者： Qiang Wang Qi Shu Shizhu Wang Agnieszka Beszczynska-Moeller Sergey Danilov Laura de Steur Thomas W.N.Haine Michael Karcher Craig M.Lee Paul G.Myers Igor V.polyakov Christine Provost Øystein Skagseth Gunnar Spreen Rebecca Woodgate Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research(AWI) BremerhavenGermany first Institute of Oceanography and Key Laboratory of Marine Science and Numerical ModelingMinistry of Natural ResourcesQingdaoPeople’s Republic of China Shandong Key Laboratory of Marine Science and Numerical Modeling QingdaoPeople’s Republic of China Institute of Oceanology Polish Academy of SciencesSopotPoland Department of Mathematics and Logistics Jacobs UniversityBremenGermany Norwegian Polar Institute Fram CentreTromsøNorway Earth&Planetary Sciences The Johns Hopkins UniversityBaltimoreMDUSA .8Ocean Atmosphere Systems GmbH HamburgGermany Applied Physics Laboratory University of WashingtonSeattleWAUSA. Department of Earth and Atmospheric Sciences University of AlbertaEdmontonABCanada. International Arctic Research Center and College of Natural Science and Mathematics University of Alaska FairbanksFairbanksAKUSA. finnish Meteorological Institute HelsinkiFinland. Laboratoire LOCEAN-IPSL Sorbonne Université(UPMCUniversity Paris 6)CNRSIRDMNHNParisFrance. Institute of Marine Research and Bjerknes Centre of Climate Research BergenNorway. Institute of Environmental Physics University of BremenBremenGermany.

Arctic Ocean gateway fluxes play a crucial role in linking the Arctic with the global ocean and affecting climate and marine *** reviewed past studies on Arctic-Subarctic ocean linkages and examined their changes and driving *** review highlights that radical changes occurred in the inflows and outflows of the Arctic Ocean during the ***,the Pacific inflow temperature in the Bering Strait and Atlantic inflow temperature in the fram Strait hit record highs,while the Pacific inflow salinity in the Bering Strait and Arctic outflow salinity in the Davis and fram straits hit record *** the ocean heat convergence from lower latitudes to the Arctic and the hydrological cycle connecting the Arctic with Subarctic seas were stronger in 2000-2020 than in ***6 models project a continuing increase in poleward ocean heat convergence in the 21st century,mainly due to warming of inflow *** also predict an increase in freshwater input to the Arctic Ocean,with the largest increase in freshwater export expected to occur in the fram Strait due to both increased ocean volume export and decreased *** Strait sea ice volume export hit a record low in the 2010s and is projected to continue to decrease along with Arctic sea ice *** quantitatively attribute the variability of the volume,heat,and freshwater transports in the Arctic gateways to forcing within and outside the Arctic based on dedicated numerical simulations and emphasize the importance of both origins in driving the variability.

关键词： Arctic ocean Strait

利用地基高分辨率傅里叶变换红外光谱技术探测大气氟氯烃气体CCl_(2)f_(2)的时空变化特征

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物理学报 2021年第20期70卷 3-11页

作者：曾祥昱王薇刘诚单昌功谢宇胡启后孙友文 polyakov Alexander Viktorovich 中国科学院合肥物质科学研究院安徽光学精密机械研究所环境光学与技术重点实验室合肥230031 中国科学技术大学精密机械与精密仪器系合肥230026 合肥学院自动化系合肥230601 faculty of Physics Saint Petersburg State UniversitySaint Petersburg 199034

大气二氯二氟甲烷(CCl_(2)f_(2),CfC-12)是人工合成的化学制剂,对平流层臭氧可产生严重的破坏和损耗.研究大气CfC-12的探测技术并获取其时空分布和变化,对了解区域氟氯烃气体变化趋势以及对平流层臭氧的影响具有重要意义.本文利用地基... 详细信息

大气二氯二氟甲烷(CCl_(2)f_(2),CfC-12)是人工合成的化学制剂,对平流层臭氧可产生严重的破坏和损耗.研究大气CfC-12的探测技术并获取其时空分布和变化,对了解区域氟氯烃气体变化趋势以及对平流层臭氧的影响具有重要意义.本文利用地基高分辨率傅里叶变换红外光谱(fourier transform infrared spectroscopy,fTIR)技术研究大气CfC-12的垂直分布和柱浓度的反演方法,基于最优估计算法反演2017-2020年合肥地区大气CfC-12的垂直廓线和柱总量.合肥大气CfC-12反演获得的垂直廓线表明,大气CfC-12在对流层以及低平流层处具有较高浓度,在垂直高度40 km以上浓度极低.合肥地区大气CfC-12的柱浓度含量呈现出夏季浓度较高,冬季与初春浓度较低的季节变化;观测期间大气CfC-12柱浓度呈现缓慢下降的趋势,年均变化率为-0.68%.将地基观测数据与ACE-fTS卫星观测数据进行比对,在高度范围16-28 km内两个CfC-12偏柱总量的相关性系数为0.73,可见地基和卫星数据具有较好的一致性.长期观测结果表明了地基高分辨率fTIR技术在观测大气中CfC-12的浓度垂直分布与季节变化上具有高的准确性和可靠性.

关键词：二氯二氟甲烷太阳吸收光谱柱总量垂直廓线

Kf-Alf3-Al2O3熔体和悬浮液中Cu-Al合金的阳极过程

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Transactions of Nonferrous Metals Society of China 2020年第5期30卷 1419-1428页

作者： Sai Krishna PADAMATA Andrey S.YASINSKIY Petr V.polyakov School of Non-ferrous Metals and Materials Science Siberian Federal UniversityKrasnoyarskRussia

使用计时电位和循环伏安技术表征熔融Kf-Alf3-Al2O3(饱和)和悬浮液中Cu-10Al电极阳极过程,证明冰晶石比(CR=x(Kf)/x(Alf3))、温度和颗粒体积分数(φ)对阳极电化学行为的影响。最初,在750℃和电流密度为0.4 A/cm^2的条件下,以恒电流模式... 详细信息

使用计时电位和循环伏安技术表征熔融Kf-Alf3-Al2O3(饱和)和悬浮液中Cu-10Al电极阳极过程,证明冰晶石比(CR=x(Kf)/x(Alf3))、温度和颗粒体积分数(φ)对阳极电化学行为的影响。最初,在750℃和电流密度为0.4 A/cm^2的条件下,以恒电流模式在熔体和悬浮液(φ=0.12,0.15)中进行阳极极化。熔体中的阳极电势在2.5~3.2 V之间变化,悬浮液(φ=0.12)的阳极电势则在3.3~3.4V之间变化。采用XRD分析阳极表面的氧化物相。阳极极限电流密度和传质系数均随着悬浮液中体积分数的增加而急剧下降。研究结果表明,使用Cu-10Al阳极的较好工艺参数是:800℃,熔体CR 1.4,颗粒体积分数约0.09。

关键词：铝悬浮液氧化惰性阳极冰晶石熔体低温电解

Erratum to “A Review of Arctic–Subarctic Ocean Linkages: Past Changes, Mechanisms, and future Projections”

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Ocean-Land-Atmosphere Research 2023年第1期2卷 234-236页

作者： Qiang Wang Qi Shu Shizhu Wang Agnieszka Beszczynska-Moeller Sergey Danilov Laura de Steur Thomas W.N.Haine Michael Karcher Craig M.Lee Paul G.Myers Igor V.polyakov Christine Provost Øystein Skagseth Gunnar Spreen Rebecca Woodgate Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research(AWI) BremerhavenGermany first Institute of Oceanography and Key Laboratory of Marine Science and Numerical ModelingMinistry of Natural ResourcesQingdaoPeople’s Republic of China Shandong Key Laboratory of Marine Science and Numerical Modeling QingdaoPeople’s Republic of China Institute of Oceanology Polish Academy of SciencesSopotPoland. Department of Mathematics and Logistics Jacobs UniversityBremenGermany. Norwegian Polar Institute Fram CentreTromsøNorway. Earth&Planetary Sciences The Johns Hopkins UniversityBaltimoreMDUSA. Ocean Atmosphere Systems GmbH HamburgGermany. Applied Physics Laboratory University of WashingtonSeattleWAUSA. Department of Earth and Atmospheric Sciences University of AlbertaEdmontonABCanada. International Arctic Research Center and College of Natural Science and Mathematics University of Alaska FairbanksFairbanksAKUSA. finnish Meteorological Institute HelsinkiFinland. Laboratoire LOCEAN-IPSL Sorbonne Université(UPMCUniversity Paris 6)CNRSIRDMNHNParisFrance. Institute of Marine Research and Bjerknes Centre of Climate Research BergenNorway. Institute of Environmental Physics University of BremenBremenGermany.

In the Review Article"A Review of Arctic–Subarctic Ocean Linkages:Past Changes,Mechanisms,and future Projections"[1],the x-axis in figure 4B and y-axis in figure 8f were skewed during picture beautification by an ***... 详细信息

关键词： Arctic arctic figure

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关于编制地震区建筑规范的一些问题

世界地震工程 1984年第6期 1-4+8页

作者： polyakov S.V. Bobrov f.V. Oiserman V.I. 赵林秀

前言苏联新规范СНИПⅡ-7-81在1981年6月由苏联全苏技术标准委员会批准。新规范从1982年起执行。新规范包括下面一些章节:(1)总则;(2)设计荷载;(3)住宅、公共建筑、厂房和构筑物;(4)运输方面的构筑物;(5)水工构筑物及附属设施。下面... 详细信息

前言苏联新规范СНИПⅡ-7-81在1981年6月由苏联全苏技术标准委员会批准。新规范从1982年起执行。新规范包括下面一些章节:(1)总则;(2)设计荷载;(3)住宅、公共建筑、厂房和构筑物;(4)运输方面的构筑物;(5)水工构筑物及附属设施。下面将阐述作者参加编写的前三章。

关键词：新规范地震烈度表烈度表构筑物设计地震烈度震中距地震基本参数建筑物加速度记录苏联苏维埃社会主义共和国联盟修正值编制

Search for the rare decays W^(+)→D_(s)^(+)γ and Z→D^(0)γ at LHCb

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中国物理C:英文版 2023年第9期47卷 14-26页

作者： R.Aaij A.S.W.Abdelmotteleb C.Abellan Beteta f.Abudinén T.Ackernley B.Adeva M.Adinolfi P.Adlarson H.Afsharnia C.Agapopoulou C.A.Aidala Z.Ajaltouni S.Akar K.Akiba J.Albrecht f.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle R.Amalric S.Amato J.L.Amey Y.Amhis L.An L.Anderlini M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao f.Archilli A.Artamonov M.Artuso E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bailly-reyre P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista de Souza Leite M.Barbetti R.J.Barlow S.Barsuk W.Barter M.Bartolini f.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker f.Bedeschi I.B.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Benane G.Bencivenni E.Ben-Haim A.Berezhnoy *** *** Andres D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt f.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker N.V.Biesuz S.Bifani P.Billoir A.Biolchini M.Birch f.C.R.Bishop A.Bitadze A.Bizzeti M.P.Blago T.Blake f.Blanc J.E.Blank S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev C.S.Bolognani R.Bolzonella N.Bondar f.Borgato S.Borghi M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez J.Brodzicka A.Brossa Gonzalo J.Brown D.Brundu A.Buonaura L.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Campana D.H.Campora Perez A.f.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini P.Carniti L.Carus A.Casais Vidal R.Caspary G.Casse M.Cattaneo G.Cavallero V.Cavallini S.Celani J.Cerasoli D.Cervenkov A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.f.Cicala X.Cid Vidal G.Ciezarek G.Ciullo P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cognera 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 Institute Of High Energy Physics(IHEP) BeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Université Savoie Mont Blanc CNRSIN2P3-LAPPAnnecyFrance UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut für Kernphysik(MPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat 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 MilanoItaly INfN Sezione di Milano-Bicocca MilanoItaly INfN Sezione di Cagliari MonserratoItaly Universitàdegli Studi di Padova Universitàe INFNPadovaPadovaItaly INfN Sezione di Pisa PisaItaly INfN Sezione di Roma La Sapienza RomaItaly INfN Sezione di Roma Tor Vergata RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands AGH-University of Science and Technology Faculty of Physics and Applied Computer Scienc

A search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity of 2.0fb−*** significant signal is observed for either decay mode and upper limits on their branching fractions are set using W^(+)→D_(s)^(+)γ and Z→μ+μ−decays as normalization *** upper limits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence level for the W^(+)→D_(s)^(+)γ and Z→D^(0)γ decay modes,*** is the first reported search for the Z→D^(0)γ decay,while the upper limit on the W+→D+sγbranching fraction improves upon the previous best limit.

关键词： W/Z boson rare decay upper limit of branching fraction

Search for the doubly heavy baryons Ωbc0 and Ξbc0 decaying to Λc+π- and Ξc+π-

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Chinese Physics C 2021年第9期45卷 14-25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 *** D.Berninghoff H.C.Bernstein C.Bertella 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.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 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 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'Occo J.Dalseno C.D'Amb University of Edinburgh Horia Hulubei National Institute of Physics and Nuclear Engineering INfN Sezione di Bari Università di Bari Los Alamos National Laboratory (LANL) Van Swinderen Institute University of Groningen Universiteit Maastricht AGH-University of Science and Technology faculty of Physics and Applied Computer Science Université Clermont Auvergne Università di Cagliari Institute for Nuclear Research of the National Academy of Sciences (KINR) School of Physics University College Dublin NSC Kharkiv Institute of Physics and Technology (NSC KIPT) INfN Sezione di Perugia STfC Rutherford Appleton Laboratory School of Physics and Astronomy Monash University Novosibirsk State University CNRS/IN2P3 Department of Physics and Astronomy Uppsala University Università di Genova School of Physics State Key Laboratory of Nuclear Physics and Technology Peking University National Center for Nuclear Research (NCBJ) Università di Roma Tor Vergata Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Universidade federal do Triangulo Mineiro (UfTM) Institute of Particle Physics LPC Central China Normal University Hangzhou Institute for Advanced Study UCAS Instituto de fisica Corpuscular Centro Mixto Universidad de Valencia-CSIC Nikhef National Institute for Subatomic Physics and VU University Amsterdam National Research Tomsk Polytechnic University AGH-University of Science and Technology faculty of Computer Science Electronics and Telecommunications University of Michigan Università di Siena Università di Padova Scuola Normale Superiore National Research Centre Kurchatov Institute Università degli Studi di Milano MSU-Iligan Institute of Technology (MSU-IIT) Università di firenze INfN Sezione di Roma La Sapienza Institut für Physik Universit?t Rostock INfN Sezione di Milano Departamento de fisica Universidad Nacional de Colombia Universit?t Bonn-Helmholtz-Institut für Strahlen und Kernphysik Hanoi University of Science Università di Pisa P.N. Lebedev Physical Institute Russian Academy of Science (LPI RAS) Università

The first search for the doubly heavy Ωbc0baryon and a search for the Ξbc0baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV,corresponding to an integrated luminosity of 5.2 *** baryons are reconstructed via their decays to ∧c+π-andΞc+π-.No significant excess is found for invariant masses between 6700 and 7300 MeV/c2,in a rapidity range from2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/*** limits are set on the ratio of the Ωbc0andΞbc0production cross-section times the branching fraction to ∧c+π-（Ξc+π-） relative to that of the ∧b0（Ξb0） baryon,for different lifetime hypotheses,at 95% confidence *** upper limits range from 0.5×10-4to 2.5×10-4for theΩbc0→∧c+π-(Ξbc0→∧c+π-) decay,and from 1.4×10-3to 6.9×10-3for the Ωbc0→Ξc+π-(Ξbc0→Ξc+π-) decay,depending on the considered mass and lifetime of the Ωbc0(Ξbc0) baryon.

关键词： B physics quarkonium spectroscopy heavy quark production

Search for the rare decay B^(0)→J/ψФ

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Chinese Physics C 2021年第4期45卷 47-60页

作者： R.Aaij C.Abellin Beteta T.Ackernley B.Adeva M.Adinolfi H.Afsharnial 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.Bachmaver J.J.Back S.Baker P.Baladron Rodriguez V.Balagura W.Baldinit 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.Bedeschis 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 M.O.Bettler Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker S.Bifani P.Billoir M.Birch f.C.R.Bishop A.Bizzeti M.Biorn 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 Rodriguezs M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Burschee 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 D.H.Campora Perez A.f.Campoverde Quezada S.Capelli L.Capriotti A.Carbonel 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.Crkovska M.Cruz Centro Brasileiro de Pesquisas fisicas(CBPf) Riode JaneiroBrazil Universidade federal do Riode Janeiro(UfRJ) Riode 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) BejingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Universitq Paris-Saclay CNRS/IN2P3IJCLabOrsayFrance LPNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-Institut fir Kernphysik(MPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat 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 Frascatiltaly INfN Sezione di Genova GenovaItaly INfN Sezione di Milano Bicocca Milanolaly INfN Sezione di Milano MilanoItaly INfN Sezione di Cagliari Monserratoltaly 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 KrakowPoland AGH-University of Science and Technology Faculty of Physics and Applied Computer Science

A search for the rare decay B^(0)→J/ψФis performed using Pp collision data collected with the LHCb dete-ctor at centre-of-mass energies of 7,8 and 13 TeV,corresponding to an integrated luminosity of9 *** significant signal of the decay is observed and an upper limitof 1.1x 10^(-7)at 90%confidence level is set on the branching fraction.

关键词： B physics flavour physics rare decay ω-Фmixing branching fraction