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2-6 First Direct Measurement of 12C(12C, n)23Mg at Stellar Energies

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IMp & HIRFL Annual Report 2015年第1期 56-58页

作者： Tang Xiaodong B. Bucher X. Fang A. Heger S. Almaraz-Calderon A. Alongi A.D. Ayangeakaa M. Beard A. Best J. Browne C. Cahillane M. Couder R.J. deBoer A. Kontos L. Lamm Y.J. Li A. Long W. Lu S. Lyons M. Notani D. patel N. paul M. pignatari A. Roberts D. Robertson K. Smith E. Stech R. Talwar W.p. Tan M. Wiescher S.E. Woosley Institute of Modern physics Chinese Academy of Science Lanzhou 730000 China Institute for Structure and Nuclear Astrophysics Joint Institute for Nuclear AstrophysicsUniversity of Notre Dame Notre Dame Indiana 46556 USA Lawrence Livermore National Laboratory Livermore California 94550 USA Monash Center for Astrophysics School of Physics and Astronomy Monash University Victoria 3800 Australia Department of physics and Astronomy Shanghai Jiao-Tong University CNA Shanghai 200240 China School of physics and Astronomy University of Minnesota Minneapolis Minnesota 55455 USA China Institute of Atomic Energy Beijing 102413 China Konkoly Observatory Research Centre for Astronomy and Earth Sciences Hungarian Academy of SciencesKonkoly Thege Mikl′os′ut 15-17 H-1121 Budapest Hungary Department of physics University of Basel Basel CH-4056 Switzerland Department of Astronomy and Astrophysics University of California Santa Cruz California 95064 USA

The first stars in the early Universe were formed about 400 million years after the big bang. Verification of the existence of these stars is important for our understanding of the evolution of the Universe[1]. It has been predicted that for population-III stellar production yields, the abundances of odd-Z elements are remarkably deficient compared to their adjacent even-Z elements[2]. Astronomers are searching for long-lived, low mass stars with the unique nucleosynthetic pattern matching the predicted yields[3].

关键词： First Direct Measurement

Assessment of Lung Cancer Risk on the Basis of a Biomarker panel of Circulating proteins

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Assessment of Lung Cancer Risk on the Basis of a Biomarker P...

2019年中国肿瘤标志物学术大会暨第十三届肿瘤标志物青年科学家论坛

作者： sun,nan Florence,Guida Bantis,LeonidasE. Muller,DavidC. Li,peng Taguchi,Ayumu Dhillon,Dilsher Kundnani,DeepaliL. patel,NikulJ. Yan,Qingxiang Byrnes,Graham Moons,KarelG.M. Tj?nneland,Anne panico,Salvatore Claudia ,Agnoli Vineis,paolo palli,Domenico Bueno-de-Mesquita,Bas peeters,petraH. Agudo,Antonio Huerta,JoseM. Dorronsoro,Miren Barranco,MiguelRodriguez Ardanaz,Eva Travis,RuthC. Byrne,KarlSmith Boeing,Heiner Steffen,Annika Kaaks,Rudolf Hüsing,Anika Trichopoulou,Antonia Lagiou,pagona LaVecchia,Carlo Severi,Gianluca Boutron-Ruault,Marie-Christine Sandanger,TorkjelM. Weiderpass,Elisabete N?st,ThereseH. Tsilidis,Kostas Riboli,Elio Grankvist,Kjell Johansson,Mikael Goodman,GaryE. Feng,Ziding Brennan,paul Johansson,Mattias Hanash,Samir M. The University of Texas MD Anderson Cancer Center Genetic Epidemiology Group International Agency for Research on Cancer Department of Biostatistics The University of Texas MD Anderson Cancer Center Department of Epidemiology and Biostatistics Imperial College London School of Public Health Laboratory of population Health Max Planck Institute for Demographic Research Department of Translational Molecular pathology The University of Texas MD Anderson Cancer Center Environment and Radiation Section International Agency for Research on Cancer Department of Epidemiology Julius Center for Health Sciences and Primary CareUniversity Medical Center Unit of Diet Genesand EnvironmentDanish Cancer Society Research Center Department of Clinical Medicine and Surgery Federico Ⅱ University Epidemiology and prevention Unit Fondazione IRCCS Istituto Nazionale dei Tumori Molecular and Genetic Epidemiology Unit Human Genetics Foundation Cancer Risk Factors and Life-Style Epidemiology Unit Cancer Research and Prevention Institute-Istituto per lo Studio ela Prevenzione Oncologica Department for Determinants of Chronic Diseases National Institute for Public Health and the Environment Unit of Nutirition and Cancer Cancer Epidemiology Research ProgramCatalan Institute of OncologyBellvitge Institute for Biomedical Research (IDIBELL)L’Hospitalet de Llobregat Department of Epidemiology Murcia Regional Health Council Biomedical Research Institute of Murcia(IMIB-Arrixaca) Centro de Investigación Biomédica en Red Epidemiología y Salud pública (CIBERESp) public Health Direction and Biodonostia Research Institute-CIBERESp Escuela Andaluza de Salud pública Instituto de Investigación Biosanitaria Hospitales Universitarios de Granada/Universidad de Granada Epidemiology Preventionand Promotion Health ServiceNavarra Public Health Institute Instituto de Investigación Sanitaria de Navarra (IdiSNA) Navarra Institute for Health Research Cancer Epidemiology Unit Nuffield Department of Population HealthUniversity of Oxford Department of Epidemi

IMpORTANCE:There is an urgent need to improve lung cancer risk assessment because current screening criteria miss a large proportion of ***:To investigate whether a lung cancer risk prediction model based on a panel of selected circulating protein biomarkers can outperform a traditional risk prediction model and current US screening criteria.

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单细胞技术揭示肝癌免疫图谱与动态特征

科学新闻 2020年第2期 41-41页

作者：彭吉润任仙文张泽民刘康 Qiming Zhang Yao He Nan Luo Shashank J.patel Yanjie Han Ranran Gao Madhura Modak Sebastian Carotta Christian Haslinger David Kind Gregory W.peet Guojie Zhong Shuangjia Lu Weihua Zhu Yilei Mao Mengmeng Xiao Michael Bergmann Xueda Hu Sid p.Kerkar Anne B.Vogt Stefan pflanz 首都医科大学附属北京世纪坛医院胃肠及肝胆肿瘤外科北京大学生物医学前沿创新中心(BIOpIC) 北京未来基因诊断高精尖创新中心(ICG) 勃林格殷格翰公司

文章简介肝细胞癌是世界范围内死亡率排名第三的癌症,其中中国的肝癌发病率居世界之先。肿瘤存在多种免疫逃逸机制,提出了研究肿瘤微环境中不同免疫细胞状态的重要性。而不同类型的单细胞测序技术则是研究不同类型免疫细胞的状态和动态... 详细信息

文章简介肝细胞癌是世界范围内死亡率排名第三的癌症,其中中国的肝癌发病率居世界之先。肿瘤存在多种免疫逃逸机制,提出了研究肿瘤微环境中不同免疫细胞状态的重要性。而不同类型的单细胞测序技术则是研究不同类型免疫细胞的状态和动态的有力手段。本研究结合了两种单细胞测序技术,充分发挥不同数据类型的优势,获得高分辨率的肝癌免疫图谱。肿瘤中的树突状细胞是重要的抗原呈递细胞,除传统的树突状细胞外,本研究鉴定出一群高表达LAMp3,CCR7等与细胞

关键词：肝癌患者免疫细胞癌旁组织单细胞动态特征

Fitbit在抑郁症的行为激活疗法中的可接受性：一项定性研究

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英国医学杂志中文版 2018年第8期21卷 477-477页

作者： Jenny Chum Min Suk Kim Laura Zielinski Meha Bhatt Douglas Chung Sharon Yeung Kathryn Litke Kathleen McCabe Jeff Whattam Laura Garrick Laura O'Neill Stefanie Goyert Colleen Merrifield Yogita patel Zainab Samaan 孟雪(译) 不详北京大学第六医院

前言重度抑郁症的特征是情绪低落和缺乏动力。文献表明，增加身体活动对缓解抑郁症有积极作用。健康追踪设备可以补充行为激活（BA）疗法，以改善抑郁症患者的身体活动和心理健康。目的了解患者从Fitbit获得的好处并探索与患者体验相关... 详细信息

前言重度抑郁症的特征是情绪低落和缺乏动力。文献表明，增加身体活动对缓解抑郁症有积极作用。健康追踪设备可以补充行为激活（BA）疗法，以改善抑郁症患者的身体活动和心理健康。目的了解患者从Fitbit获得的好处并探索与患者体验相关的主题。比较感知的益处、患者因素、Fitbit使用情况和贝克的抑郁量表（BDI）得分。方法对患者（n=36）进行的半结构式访谈，这些患者均已在情绪障碍门诊中完成了为期28周的行为激活项目。所有的患者都被要求携带一个Fitbit One设备。我们对访谈进行了专题分析，并对患者特征、Fitbit使用情况、记录的步数、感知到的好处和BDI评分进行了探索性的定量分析。结果23名患者认为Fitbit对他们的身体活动很有帮助。积极经历的主题包括自我意识、同伴激励和目标设定的机会。负面主题包括不便、不准确和不感兴趣。年龄、基线和BDI得分的变化、先前的身体活动目标和对技术的熟悉程度与Fitbit的感知收益或使用度无相关性。感知收益与使用度显著相关（p〈0．01）。结论总的来说，Fitbit是一个用于补充抑郁症患者的行为激活疗法可以接受的工具。许多积极的主题与当前的文献一致；然而，患者也报告了可能影响使用的负面因素。临床意义临床医生和研究者在应用运动追踪器来刺激抑郁症患者时应该同时考虑其优势和局限性。

关键词：抑郁症行为激活疗法可接受性 Fitbit

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丰质子核^(29)S的β延迟γ衰变研究

原子核物理评论 2023年第3期40卷 341-347页

作者：查思贤李金海覃淑炼常志芳徐新星孙立杰刘嘉健袁岑溪林承键李晓菁李智焕吴鸿毅李朋杰王建松杨彦云梁鹏飞简豪高雨枫范锐戴凡超朱浩钒王东玺蓝乙华马朋段芳芳高志浩胡强白真马军兵王建国钟福鹏武晨光罗迪雯蒋颖刘洋侯东升李忍马南茹马维虎石国柱余功明 D.patel 金树亚王煜峰余悦超胡力元王翔臧宏亮赵青青杨磊温培威杨峰贾会明张高龙潘敏汪小雨孙浩瀚徐瑚珊周小红张玉虎胡正国王猛陈若富柳敏良杨维青中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049 香港大学物理系中国香港999077 中国原子能科学研究院核物理研究所北京102413 先进能源科学与技术广东省实验室广东惠州516003 上海交通大学物理与天文学院上海200240 中山大学中法核工程与技术学院广东珠海519082 广西师范大学物理科学与技术学院广西桂林541004 北京大学物理学院北京100871 湖州师范学院理学院浙江湖州313000 兰州大学核科学与技术学院兰州730000 复旦大学现代物理研究所上海200433 云南大学物理与天文学院昆明650091 哈尔滨工程大学核安全与仿真技术国防重点学科实验室哈尔滨150001 北京航空航天大学物理科学与核能工程学院北京100191

在兰州重离子研究装置的放射性束流线(HIRFL-RIBLL1)上,使用由三块双面硅微条探测器及环绕它的五个高纯锗探测器组成的探测器阵列,对丰质子核^(29)S的延迟衰变性质展开研究。本次实验获得了^(29)S的半衰期,为183(4)ms。首次实现了^(29)... 详细信息

在兰州重离子研究装置的放射性束流线(HIRFL-RIBLL1)上,使用由三块双面硅微条探测器及环绕它的五个高纯锗探测器组成的探测器阵列,对丰质子核^(29)S的延迟衰变性质展开研究。本次实验获得了^(29)S的半衰期,为183(4)ms。首次实现了^(29)S的延迟测量,准确地获得了4条射线,得到了通过衰变布居到子核^(29)p低激发态的衰变分支比,并由此建立了^(29)S的部分衰变纲图。基于实验数据,研究了^(29)S→^(29)p/^(29)Al→^(29)Si镜像衰变过程中的同位旋对称性破缺。

关键词：丰质子核 β衰变半衰期衰变纲图镜像不对称性

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Search for the doubly heavy baryons Ω^(0)_(bc) and E^(0)_(bc) decaying to Λ^(+)_(c)π^(-) and E^(+)_(c)π^(-)

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Chinese physics C 2021年第9期45卷 10-21页

作者： R.Aaij C.Abelian Beteta T.Ackernley B.Adeva M.Adinolfi H.Afshamia C.A.Aidala S.Aiola Z.Ajaltouni S.Aka J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov p.Alvarez Cartelie 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.Beminghoff 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.Bjorn 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.Camiti 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.Crkovska M.Cruz Torres R.Currie C.L.Da Silva E.Dall'Occo J.Dalseno C.D'Ambrosi Centro Brasileiro de pesquisas Fisicas(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 ofChinese Academy of Sciences BeijingChina Institute of particle physics Central China Normal UniversityWuhanHubeiChina Univ.Savoie Mont Blanc CNRSIN2P3-LAPPAnnecyFrance Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Universite paris-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-Ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LpNHE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/FN2P3ParisFrance I.physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat physik Technische Universitat DortmundDortmundGermany Max-planck-Institut für Kemphysik(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 Universita degli Studi di padova Universita e 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 ScienceKr

The first search for the doubly heavyΩ^(0)_(bc)baryon and a search for the E^(0)_(bc)baryon 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 fb^(-1).The baryons are reconstructed via their decays to Λ^(+)_(c)π^(-)and E^(+)_(c)π^(-).No significant excess is fbund for invariant masses between 6700 and 7300 MeV/c^(2),in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/*** limits are set on the ratio of the Ω^(0)_(bc)and E^(0)_(bc)production cross-section times the branching fraction to Λ^(+)_(c)π^(-)(E^(+)_(c)π^(-))relative to that of the Λ^(0)_(b)(E^(0)_(b))baryon,for different lifetime hypotheses,at 95%confidence *** upper limits range 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^(-))decay,and from 1.4x 10^(-3)to 6.9 x 10^(-3)for theΩ^(0)_(bc)→E^(+)_(c)π^(-)(E^(0)_(bc)→E^(+)_(c)π^(-))decay,depending on the considered mass and lifetime of theΩ^(0)_(bc)(E^(0)_(bc))baryon.

关键词： B physics quarkonium spectroscopy heavy quark production

Search for the doubly heavy baryon Ξ_(bc)^(+)→ decaying to J/ψΞ_(c)^(+)

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中国物理C:英文版 2023年第9期47卷 1-13页

作者： R.Aaij A.S.W.Abdelmotteleb C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.Agapopoulou C.A.Aidala S.Aiola Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche p.Alvarez Cartelle 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.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 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 S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev N.Bondar 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 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.Camargo Magalhaes p.Campana D.H.Campora perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli 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.Cogneras L.Cojocariu p.Collins T.Colombo L.Congedo A.Contu N.Cooke 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 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 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 first search for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb−1 recorded at centre-of-mass energies of 7, 8, and 13 TeV. Two peaking structures are seen with a local (global) significance of 4.3(2.8) and 4.1(2.4) standard deviations at masses of 6571 and 6694 MeV/c2, respectively. Upper limits are set on the Ξ+bc baryon production cross-section times the branching fraction relative to that of the B+c→J/ψD+s decay at centre-of-mass energies of 8 and 13 TeV, in the Ξ+bc and in the B+c rapidity and transverse-momentum ranges from 2.0 to 4.5 and 0 to 20GeV/c, respectively. Upper limits are presented as a function of the Ξ+bc mass and lifetime.

关键词： QCD B physics charm physics spectroscopy

近质子滴线核^(28)S的β延迟γ衰变研究

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原子核物理评论 2021年第2期38卷 117-122页

作者：高祺锐徐新星周小红孙立杰梁鹏飞刘嘉健林承键李晓菁李智焕吴鸿毅杨彦云王建松王东玺蓝乙华马朋段芳芳高志浩胡强白真马军兵王建国钟福鹏武晨光罗迪雯蒋颖刘洋侯东升李忍马南茹马维虎石国柱余功明 Dpatel 金树亚王煜峰余悦超周清武王鹏胡力元王翔臧宏亮李朋杰朱浩钒林喆阳赵青青杨磊温培威杨峰贾会明张高龙潘敏汪小雨孙浩瀚胡正国陈若富柳敏良杨维青华南师范大学量子物质研究院广州510631 中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049 香港大学物理学系中国香港999077 中国原子能科学研究院核物理研究所北京102413 先进能源科学与技术广东省实验室广东惠州516003 上海交通大学物理与天文学院上海200240 广西师范大学物理科学与技术学院广西桂林541004 北京大学物理学院北京100871 湖州师范学院理学院浙江湖州313000 兰州大学核科学与技术学院兰州730000 复旦大学现代物理研究所上海200433 云南大学物理与天文学院昆明650091 西南大学物理科学与技术学院重庆400044 哈尔滨工程大学核安全与仿真技术国防重点学科实验室哈尔滨150001 郑州大学物理学院(微电子学院) 郑州450001 北京航空航天大学物理科学与核能工程学院北京100191

在兰州重离子研究装置上,依托兰州放射性束流线,产生、分离和鉴别了同位旋第三分量TZ=−2的近质子滴线核^(28)S,并通过使用包括双面硅条探测器和高纯锗探测器在内的探测阵列,开展了^(28)S的β延迟γ衰变测量。实验准确测量了^(28)S衰变中... 详细信息

在兰州重离子研究装置上,依托兰州放射性束流线,产生、分离和鉴别了同位旋第三分量TZ=−2的近质子滴线核^(28)S,并通过使用包括双面硅条探测器和高纯锗探测器在内的探测阵列,开展了^(28)S的β延迟γ衰变测量。实验准确测量了^(28)S衰变中的5条β延迟γ射线,得到了子核^(28)p相应能级的能量。首次提取出了β衰变布居到^(28)p低激发态的衰变分支比,并构筑了^(28)S的全新部分衰变纲图。本工作为将来进一步比较^(28)S和^(28)Mg间的镜像不对称性提供了精确的实验数据。

关键词： β衰变双面硅条探测器 γ射线谱 β衰变分支比

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