Search for the doubly charmed baryon Ωcc+

被引:0
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
机构
[1] Centro Brasileiro de Pesquisas Físicas (CBPF),Center for High Energy Physics
[2] Universidade Federal do Rio de Janeiro (UFRJ),School of Physics State Key Laboratory of Nuclear Physics and Technology
[3] Tsinghua University,Institute of Particle Physics
[4] Institute Of High Energy Physics (IHEP),CNRS, IN2P3
[5] Peking University,LAPP
[6] University of Chinese Academy of Sciences,CNRS/IN2P3, LPC
[7] Central China Normal University,CNRS/IN2P3, CPPM
[8] Univ. Savoie Mont Blanc,CNRS/IN2P3, IJCLab
[9] Université Clermont Auvergne,Laboratoire Leprince
[10] Aix Marseille Univ,Ringuet, CNRS/IN2P3, Ecole Polytechnique
[11] Université Paris-Saclay,LPNHE
[12] Institut Polytechnique de Paris,I. Physikalisches Institut
[13] Sorbonne Université,Fakultät Physik
[14] Paris Diderot Sorbonne Paris Cité,Physikalisches Institut
[15] CNRS/IN2P3,School of Physics
[16] RWTH Aachen University,Faculty of Physics and Applied Computer Science
[17] Technische Universität Dortmund,Institute of Nuclear Physics
[18] Max-Planck-Institut für Kernphysik (MPIK),ICCUB
[19] Ruprecht-Karls-Universität Heidelberg,Instituto Galego de Física de Altas Enerxías (IGFAE)
[20] University College Dublin,Instituto de Fisica Corpuscular
[21] INFN Sezione di Bari,Institute of Physics
[22] INFN Sezione di Bologna,Physik
[23] INFN Sezione di Ferrara,Institut
[24] INFN Sezione di Firenze,H.H. Wills Physics Laboratory
[25] INFN Laboratori Nazionali di Frascati,Cavendish Laboratory
[26] INFN Sezione di Genova,Department of Physics
[27] INFN Sezione di Milano,School of Physics and Astronomy
[28] INFN Sezione di Milano-Bicocca,School of Physics and Astronomy
[29] INFN Sezione di Cagliari,Oliver Lodge Laboratory
[30] Universita degli Studi di Padova,Department of Physics and Astronomy
[31] Universita e INFN,Department of Physics
[32] Padova,School of Physics and Astronomy
[33] INFN Sezione di Pisa,Physics and Micro Electronic College
[34] INFN Sezione di Roma La Sapienza,Guangdong Provencial Key Laboratory of Nuclear Science, Institute of Quantum Matter
[35] INFN Sezione di Roma Tor Vergata,School of Physics and Technology
[36] Nikhef National Institute for Subatomic Physics,Departamento de Fisica
[37] Nikhef National Institute for Subatomic Physics and VU University Amsterdam,Institut für Physik
[38] AGH-University of Science and Technology,Van Swinderen Institute
[39] Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences,DS4DS, La Salle
[40] National Center for Nuclear Research (NCBJ),Hangzhou Institute for Advanced Study
[41] Horia Hulubei National Institute of Physics and Nuclear Engineering,Faculty of Computer Science, Electronics and Telecommunications
[42] Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI),P.N. Lebedev Physical Institute
[43] Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS),Department of Physics and Astronomy
[44] Moscow State University (SINP MSU),undefined
[45] Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI),undefined
[46] Yandex School of Data Analysis,undefined
[47] Budker Institute of Nuclear Physics (SB RAS),undefined
[48] Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI),undefined
[49] Protvino,undefined
[50] Russia,undefined
来源
Science China Physics, Mechanics & Astronomy | 2021年 / 64卷
关键词
charmed baryons; limits on production of particles; charmed quarks; experimental tests;
D O I
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学科分类号
摘要
A search for the doubly charmed baryon Ωcc+ with the decay mode Ωcc+ → 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 4.0GeV/c2. Upper limits are set on the ratio R of the production cross-section times the total branching fraction of the Ωcc+ → Ξc+K−π+ decay with respect to the Ξcc++→Λc+K−π+π+\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Xi _{cc}^{ + + } \to \Lambda _c^ + {K^ - }{\pi ^ + }{\pi ^ + }$$\end{document} decay. Upper limits at 95% credibility level for R in the range 0.005 to 0.11 are obtained for different hypotheses on the Ωcc+ 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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