Coherent ψ(2S) photo-production in ultra-peripheral Pb–Pb collisions at √sNN=2.76 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2015.10.040

Coherent ψ(2S) photo-production in ultra-peripheral Pb–Pb collisions at √s_NN=2.76 TeV

ALICE Collaboration

Sección de Física

Faculty of Nuclear Sciences and Physical Engineering
Czech Academy of Sciences
Panjab University
CERN
National Institute for Nuclear Physics
Indian Institute of Technology Bombay
Variable Energy Cyclotron Centre
Korea Institute of Science and Technology Information
Polytechnic University of Turin
Yale University
COMSATS University Islamabad
Alikhanov Institute for Theoretical and Experimental Physics
Russian Research Centre Kurchatov Institute
University of Birmingham
Universidad Nacional Autónoma de México
Enrico Fermi Center
NASU - Bogolyubov Institute for Theoretical Physics
Western Norway University of Applied Sciences
Goethe University Frankfurt
University of Bergen
St. Petersburg State University
Universidade de São Paulo
Horia Hulubei National Institute of Physics and Nuclear Engineering
GSI Helmholtz Centre for Heavy Ion Research
Heidelberg University
University of Münster
Ruder Boskovic Institute
Nantes Université
University of Bologna
Universidad de Santiago de Compostela
University of Oslo
Aligarh Muslim University
Gangneung-Wonju National University
University of Jammu
IRFU
Institute of Physics Bhubaneswar
University of Catania
Hungarian Academy of Sciences
Université Clermont Auvergne
Central China Normal University
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Joint Institute for Nuclear Research
University of Copenhagen
Indian Institute of Technology Indore
Université de Strasbourg
Benemerita Universidad Autonoma de Puebla
University of Houston
Wayne State University
Moscow Engineering Physics Institute
RAS - Saint Petersburg Nuclear Physics Institute
Utrecht University
Gauhati University
University of Tsukuba
Bose Institute
National Institute of Science Education and Research
CIEMAT
Lawrence Berkeley National Laboratory
Pavol Jozef Šafárik University
Pusan National University
STFC Daresbury Laboratory
National Research Foundation
National Institute for Subatomic Physics
Purdue University
University of Helsinki
All-Russian Scientific Research Institute of Experimental Physics
Ohio State University
Pontificia Universidad Católica del Perú
University of Tennessee, Knoxville
University of Cagliari
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Jyväskylä
University of Liverpool
Saha Institute of Nuclear Physics
Creighton University
Universite Claude Bernard Lyon 1
Universidade Estadual de Campinas
Lund University
University of Cape Town
Université Grenoble Alpes
Université Paris-Saclay
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Oak Ridge National Laboratory
Technical University of Munich
Institute for Space Sciences
National Centre for Nuclear Research
University of Zagreb
Institute for High Energy Physics
RAS - Institute for Nuclear Research
National and Kapodistrian University of Athens
Chicago State University
University of Split
Warsaw University of Technology
A. Alikhanian Yerevan Institute of Physics
The University of Tokyo
University of Tübingen
Sejong University
Slovak Academy of Sciences
Yonsei University
KTO Karatay University
University of Applied Sciences Worms
California Polytechnic State University, San Luis Obispo
University of Texas at Austin
Suranaree University of Technology
Inha University
University of South-Eastern Norway
Universidad Autonoma de Sinaloa
China National Nuclear Corporation
University of Rome La Sapienza
Comenius University
University of Belgrade
Polytechnic University of Bari
Konkuk University
Hiroshima University
RAS - Budker Institute of Nuclear Physics
University of Rajasthan
Laboratori Nazionali di Legnaro
Lawrence Livermore National Laboratory
University of Kansas
Centre de calcul de l'IN2P3
University of the Witwatersrand

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

45 Citas (Scopus)

Resumen

We have performed the first measurement of the coherent ψ(2S) photo-production cross section in ultra-peripheral Pb–Pb collisions at the LHC. This charmonium excited state is reconstructed via the ψ(2S)→l⁺l⁻ and ψ(2S)→J/ψπ⁺π⁻ decays, where the J/ψ decays into two leptons. The analysis is based on an event sample corresponding to an integrated luminosity of about 22 μb⁻¹. The cross section for coherent ψ(2S) production in the rapidity interval −0.9<y<0.9 is dσ_ψ(2S) ^coh/dy=0.83±0.19(stat+syst) mb. The ψ(2S) to J/ψ coherent cross section ratio is 0.34_−0.07 ^+0.08(stat+syst). The obtained results are compared to predictions from theoretical models.

Idioma original	Inglés
Páginas (desde-hasta)	358-370
Número de páginas	13
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	751
DOI	https://doi.org/10.1016/j.physletb.2015.10.040
Estado	Publicada - 17 dic. 2015

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10.1016/j.physletb.2015.10.040

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@article{5c3796ce9e1f49b89eb181174cdc6a54,

title = "Coherent ψ(2S) photo-production in ultra-peripheral Pb{\textendash}Pb collisions at √sNN=2.76 TeV",

abstract = "We have performed the first measurement of the coherent ψ(2S) photo-production cross section in ultra-peripheral Pb{\textendash}Pb collisions at the LHC. This charmonium excited state is reconstructed via the ψ(2S)→l+l− and ψ(2S)→J/ψπ+π− decays, where the J/ψ decays into two leptons. The analysis is based on an event sample corresponding to an integrated luminosity of about 22 μb−1. The cross section for coherent ψ(2S) production in the rapidity interval −0.9ψ(2S) coh/dy=0.83±0.19(stat+syst) mb. The ψ(2S) to J/ψ coherent cross section ratio is 0.34−0.07 +0.08(stat+syst). The obtained results are compared to predictions from theoretical models.",

author = "\{ALICE Collaboration\} and J. Adam and D. Adamov{\'a} and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and Ahn, \{S. U.\} and I. Aimo and S. Aiola and M. Ajaz and A. Akindinov and Alam, \{S. N.\} and D. Aleksandrov and B. Alessandro and D. Alexandre and \{Alfaro Molina\}, R. and A. Alici and A. Alkin and J. Alme and T. Alt and S. Altinpinar and I. Altsybeev and \{Alves Garcia Prado\}, C. and C. Andrei and A. Andronic and V. Anguelov and J. Anielski and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and N. Armesto and R. Arnaldi and T. Aronsson and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and M. Bach and A. Badal{\`a} and Baek, \{Y. W.\} and S. Bagnasco and R. Bailhache and R. Bala and A. Baldisseri and Gago, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} 2015 CERN for the benefit of the ALICE Collaboration",

year = "2015",

month = dec,

day = "17",

doi = "10.1016/j.physletb.2015.10.040",

language = "English",

volume = "751",

pages = "358--370",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

}

TY - JOUR

T1 - Coherent ψ(2S) photo-production in ultra-peripheral Pb–Pb collisions at √sNN=2.76 TeV

AU - ALICE Collaboration

AU - Adam, J.

AU - Adamová, D.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S. U.

AU - Aimo, I.

AU - Aiola, S.

AU - Ajaz, M.

AU - Akindinov, A.

AU - Alam, S. N.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alexandre, D.

AU - Alfaro Molina, R.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altinpinar, S.

AU - Altsybeev, I.

AU - Alves Garcia Prado, C.

AU - Andrei, C.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anielski, J.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Armesto, N.

AU - Arnaldi, R.

AU - Aronsson, T.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Bach, M.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Bagnasco, S.

AU - Bailhache, R.

AU - Bala, R.

AU - Baldisseri, A.

AU - Gago, A. M.

PY - 2015/12/17

Y1 - 2015/12/17

N2 - We have performed the first measurement of the coherent ψ(2S) photo-production cross section in ultra-peripheral Pb–Pb collisions at the LHC. This charmonium excited state is reconstructed via the ψ(2S)→l+l− and ψ(2S)→J/ψπ+π− decays, where the J/ψ decays into two leptons. The analysis is based on an event sample corresponding to an integrated luminosity of about 22 μb−1. The cross section for coherent ψ(2S) production in the rapidity interval −0.9ψ(2S) coh/dy=0.83±0.19(stat+syst) mb. The ψ(2S) to J/ψ coherent cross section ratio is 0.34−0.07 +0.08(stat+syst). The obtained results are compared to predictions from theoretical models.

AB - We have performed the first measurement of the coherent ψ(2S) photo-production cross section in ultra-peripheral Pb–Pb collisions at the LHC. This charmonium excited state is reconstructed via the ψ(2S)→l+l− and ψ(2S)→J/ψπ+π− decays, where the J/ψ decays into two leptons. The analysis is based on an event sample corresponding to an integrated luminosity of about 22 μb−1. The cross section for coherent ψ(2S) production in the rapidity interval −0.9ψ(2S) coh/dy=0.83±0.19(stat+syst) mb. The ψ(2S) to J/ψ coherent cross section ratio is 0.34−0.07 +0.08(stat+syst). The obtained results are compared to predictions from theoretical models.

UR - https://www.scopus.com/pages/publications/85041283233

U2 - 10.1016/j.physletb.2015.10.040

DO - 10.1016/j.physletb.2015.10.040

M3 - Article

AN - SCOPUS:85041283233

SN - 0370-2693

VL - 751

SP - 358

EP - 370

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics