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          Search for the doubly charmed baryon Ξcc+

          作     者:Aaij R. Abellán Beteta C. Ackernley T. Adeva B. Adinolfi M. Afsharnia H. Aidala C.A. Aiola S. Ajaltouni Z. Akar S. Albicocco P. Albrecht J. Alessio F. Alexander M. Alfonso Albero A. Alkhazov G. Alvarez Cartelle P. Alves A.A. Jr Amato S. Amhis Y. An L. Anderlini L. Andreassi G. Andreotti M. Archilli F. Arnau Romeu J. Artamonov A. Artuso M. Arzymatov K. Aslanides E. Atzeni M. Audurier B. Bachmann S. Back J.J. Baker S. Balagura V. Baldini W. Baranov A. Barlow R.J. Barsuk S. Barter W. Bartolini M. Baryshnikov F. Bassi G. Batozskaya V. Batsukh B. Battig A. Battista V. Bay A. Becker M. Bedeschi F. Bediaga I. Beiter A. Bel L.J. Belavin V. Belin S. Beliy N. Bellee V. Belous K. Belyaev I. Bencivenni G. Ben-Haim E. Benson S. Beranek S. Berezhnoy A. Bernet R. Berninghoff D. Bernstein H.C. Bertholet E. Bertolin A. Betancourt C. Betti F. Bettler M.O. Bezshyiko I. Bhasin S. Bhom J. Bieker M.S. Bifani S. Billoir P. Birnkraut A. Bizzeti A. Bj?rn M. Blago M.P. Blake T. Blanc F. Blusk S. Bobulska D. Bocci V. Boente Garcia O. Boettcher T. Boldyrev A. Bondar A. Bondar N. Borghi S. Borisyak M. Borsato M. Borsuk J.T. Bowcock T.J.V. Bozzi C. Braun S. Brea Rodriguez A. Brodski M. Brodzicka J. Brossa Gonzalo A. Brundu D. Buchanan E. Buonaura A. Burr C. Bursche A. Butter J.S. Buytaert J. Byczynski W. Cadeddu S. Cai H. Calabrese R. Cali S. Calladine R. Calvi M. Calvo Gomez M. Camboni A. Campana P. Campora Perez D.H. Capriotti L. Carbone A. Carboni G. Cardinale R. Cardini A. Carniti P. Carvalho Akiba K. Casais Vidal A. Casse G. Cattaneo M. Cavallero G. Cenci R. Cerasoli J. Chapman M.G. Charles M. Charpentier P. Chatzikonstantinidis G. Chefdeville M. Chekalina V. Chen C. Chen S. Chernov A. Chitic S.-G. Chobanova V. Chrzaszcz M. Chubykin A. Ciambrone P. Cicala M.F. Cid Vidal X. Ciezarek G. Cindolo F. Clarke P.E.L. Clemencic M. Cliff H.V. Closier J. Cobbledick J.L. Coco V. Coelho J.A.B. Cogan J. Cogneras E. Cojocariu L. Collins P. Colombo T. Comerma-Montells A. Contu A. Cooke N. Coombs G. Coquereau S. Corti G. Costa Sobral C.M. Couturier B. 

          作者機構:Nikhef National Institute for Subatomic Physics Amsterdam Netherlands Physik-Institut Universit?t Zürich Zürich Switzerland Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Instituto Galego de Física de Altas Enerxías (IGFAE) Universidade de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol United Kingdom CNRS/IN2P3 LPC Université Clermont Auvergne Clermont-Ferrand France University of Michigan Ann Arbor United States INFNSezione di Milano Milano Italy University of Cincinnati Cincinnati OH United States INFN Laboratori Nazionali di Frascati Frascati Italy Fakult?t Physik Technische Universit?t Dortmund Dortmund Germany European Organization for Nuclear Research (CERN) Geneva Switzerland School of Physics and Astronomy University of Glasgow Glasgow United Kingdom ICCUB Universitat de Barcelona Barcelona Spain Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI) Gatchina Russian Federation Imperial College London London United Kingdom Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France INFN Sezione di Firenze Firenze Italy Institute of Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland INFN Sezione di Ferrara Ferrara Italy Physikalisches Institut Ruprecht-Karls-Universit?t Heidelberg Heidelberg Germany CNRS/IN2P3 CPPM Aix Marseille Univ Marseille France Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI) Protvino Russia Protvino Russian Federation Syracuse University Syracuse NY United States Yandex School of Data Analysis Moscow Russian Federation INFN Sezione di Cagliari Monserrato Italy Department of Physics University of Warwick Coventry United Kingdom Laboratoire Leprince-Ringuet Palaiseau France Department of Physics and Astronomy University of Manchester Manchester United Kingdom I 

          出 版 物:《中國科學:物理學、力學、天文學英文版》 

          年 卷 期:2020年第63卷第2期

          頁      面:1-15

          核心收錄:

          學科分類:10[醫學] 1002[醫學-臨床醫學] 100214[醫學-腫瘤學] 

          基  金:charmed baryons limits on production of particles charmed quarks experimental tests publisher-imprint-name Science China Press, co-published with Springer volume-issue-count 12 issue-article-count 17 issue-toc-levels 0 issue-pricelist-year 2020 issue-copyright-holder Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature issue-copyright-year 2020 article-contains-esm No article-numbering-style Unnumbered article-registration-date-year 2019 article-registration-date-month 11 article-registration-date-day 20 article-toc-levels 0 toc-levels 0 volume-type Regular journal-product ArchiveJournal numbering-style Unnumbered article-grants-type OpenChoice metadata-grant OpenAccess abstract-grant OpenAccess bodypdf-grant OpenAccess bodyhtml-grant OpenAccess bibliography-grant OpenAccess esm-grant OpenAccess online-first false pdf-file-reference BodyRef/PDF/11433_2019_Article_1471.pdf target-type OnlinePDF issue-type Regular article-type OriginalPaper journal-subject-primary Physics journal-subject-secondary Physics, general journal-subject-secondary Classical and Continuum Physics journal-subject-secondary Astronomy, Observations and Techniques journal-subject-collection Physics and Astronomy open-access true We thank Profs. Chao-Hsi Chang, Cai-Dian Lü, Wei Wang, Xing-Gang Wu, and Fu-Sheng Yu for frequent and interesting discussions on the production and decays of double-heavy-flavor baryons. We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil)  MOST and NSFC (China)  CNRS/IN2P3 (France)  BMBF, DFG and MPG (Germany)  INFN (Italy)  NWO (Netherlands)  MNiSW and NCN (Poland)  MEN/IFA (Romania)  MinES and FASO (Russia)  MinECo (Spain)  SNSF and SER (Switzerland)  NASU (Ukraine)  STFC (United Kingdom)  NSF (USA). We acknowledge the computing resources that are prov 

          主  題:charmed baryons charmed quarks experimental tests limits on production of particles 

          摘      要:A search for the doubly charmed baryon Ξcc+ is performed through its decay to the Λc+K?π+ final state, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. The data correspond to a total integrated luminosity of 9 fb?1. No significant signal is observed in the mass range from 3.4 to 3.8 GeV/c2. Upper limits are set at 95% credibility level on the ratio of the Ξcc+ production cross-section times the branching fraction to that of Λc+ and Ξcc++ baryons. The limits are determined as functions of the Ξcc+ mass for different lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c. ? 2019, The Author(s).

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