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

Chinese Physics C 2021年第9期45卷 10-21页

作者： R.Aaij C.Abelian Beteta T.Ackernley B.Adev. 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.Alv.rez 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.Belav.n S.Belin v.Bellee K.Belous I.Belov.I.Belyaev.G.Benciv.nni 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.Boelhauv. 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.Butkev.ch J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine M.Calv. M.Calv. Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campov.rde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Camiti L.Carus K.Carv.lho Akiba A.Casais v.dal G.Casse M.Cattaneo G.Cav.llero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chav.z Barajas M.Chefdev.lle C.Chen S.Chen A.Chernov.v.Chobanov. S.Cholak M.Chrzaszcz A.Chubykin v.Chulikov.P.Ciambrone M.F.Cicala X.Cid v.dal 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.Crkov.ka M.Cruz Torres R.Currie C.L.Da Silv. E.Dall'Occo J.Dalseno C.D'Ambrosi Centro Brasileiro de Pesquisas Fisicas(CBPF) Rio de JaneiroBrazil Univ.rsidade 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 Univ.rsity ofChinese Academy of Sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Sav.ie Mont Blanc CNRSIN2P3-LAPPAnnecyFrance Univ.rsite Clermont Auv.rgne CNRS/IN2P3LPCClermont-FerrandFrance Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Univ.rsite 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 Genov. GenovaItaly INFN Sezione di Milano MilanoItaly INFN Sezione di Milano-Bicocca MilanoItaly INFN Sezione di Cagliari MonserratoItaly Univ.rsita degli Studi di Padov. Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma La Sapienza RomaItaly INFN Sezione di Roma Tor v.rgata RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and v. Univ.rsity Amsterdam AmsterdamNetherlands AGH-Univ.rsity of Science and Technology Faculty of Physics and Applied Computer ScienceKr

The first search for the doubly heav.Ω^(0)_(bc)baryon and a search for the E^(0)_(bc)baryon are performed using pp collision data collected v.a 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 v.a their decays to Λ^(+)_(c)π^(-)and E^(+)_(c)π^(-).No significant excess is fbund for inv.riant masses between 6700 and 7300 Mev.c^(2),in a rapidity range from 2.0 to 4.5 and a transv.rse 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^(-))relativ. 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 heav. quark production

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CEPC Technical Design Report

引用

Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev.Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alv.s Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov.Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai v.pul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat v.rv.ra Batozskaya Subash Chandra Behera Alexander Belyaev.Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalv. Bilanishv.li Deng Binglin Denis Bodrov.Anton Bogomyagkov.Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti v.ncent Boudry Mohammed Boukidi Igor Boyko Iv.nka Bozov.c Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari v.adimir Bytev.Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Criv.llin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev.Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH Univ.rsity of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui Univ.rsity HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu Univ.rsity Institute of ScienceVaranasi Bandirma Onyedi Eylul Univ.rsity Bandirma Beihang Univ.rsity Beijing Beijing Computational Science Research Center Beijing Beijing Conv.yi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal Univ.rsity Beijing Brown Univ.rsity ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad Univ.rsity Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo Univ.rsity Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal Univ.rsity WuhanHubei Central South Univ.rsity ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&Tv.Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Adv.nced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang Univ.rsity HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China Univ.rsity of Geosciences Beijing China Univ.rsity of Geosciences WuhanHubei China Univ.rsity of Mining and Technology XuzhouJiangsu China West Normal Univ.rsity NanchongSichuan Chongqing Univ.rsity Department of PhysicsChongqing Chulalongkorn Univ.rsity Bangkok City Univ.rsity of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell Univ.rsity IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu Univ.rsity DalianLiaoning Dalian Univ.rsity of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov.Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China Univ.rsity Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensiv. collaboration with international *** complex comprises four accelerators:a 30 Gev.Linac,a 1.1 Gev.Damping Ring,a Booster capable of achiev.ng energies up to 180 Gev.and a Collider operating at v.rying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with prov.sions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serv.s as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achiev. a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs ov.r a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent lev.ls,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensiv.ly detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civ.l engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending gov.rnment approv.l,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

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