Event activity dependence of Y(nS) production in $\sqrt{s_{NN}}$=5.02 TeV pPb and $\sqrt{s}$=2.76 TeV pp collisions

Chatrchyan, Serguei

doi:10.1007/JHEP04(2014)103

Title: Event activity dependence of Y(nS) production in $$\sqrt{s_{NN}}$$=5.02 TeV pPb and $$\sqrt{s}$$=2.76 TeV pp collisions

Journal Article · Tue Apr 15 00:00:00 EDT 2014 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/JHEP04(2014)103 · OSTI ID:1151709

Chatrchyan, Serguei ^[1]

Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.

The production of Y(1S), Y(2S), and Y(3S) is investigated in pPb and pp collisions at centre-of-mass energies per nucleon pair of 5.02 TeV and 2.76 TeV, respectively. The datasets correspond to integrated luminosities of about 31 nb^–1 (pPb) and 5.4 pb^–1 (pp), collected in 2013 by the CMS experiment at the LHC. Upsilons that decay into muons are reconstructed within the rapidity interval (y_CM) < 1.93 in the nucleon-nucleon centre-of-mass frame. Their production is studied as a function of two measures of event activity, namely the charged-particle multiplicity measured in the pseudorapidity interval |η| < 2.4, and the sum of transverse energy deposited at forward pseudorapidity, 4.0 < |η|< 5.2. The Y cross sections normalized by their event activity integrated values, Y(nS)/, are found to rise with both measures of the event activity in pp and pPb. In both collision systems, the ratios of the excited to the ground state cross sections, Y(nS)/Y(1S), are found to decrease with the charged-particle multiplicity, while as a function of the transverse energy the variation is less pronounced. Lastly, the event activity integrated double ratios, [Y(nS)/Y(1S)]_pPb / [Y(nS)/Y(1S)]_pp, are also measured and found to be 0.83 +/- 0.05 (stat.) +/- 0.05 (syst.) and 0.71 +/- 0.08 (stat.) +/- 0.09 (syst.) for Y(2S) and Y(3S), respectively.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Contributing Organization:: The CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1151709

Report Number(s):: FERMILAB-PUB--13-607-CMS; arXiv eprint number arXiv:1312.6300

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 4 Vol. 2014; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

References (24)

Heavy-quarkonium suppression in p-A collisions from parton energy loss in cold QCD matter Arleo, François; Peigné, Stéphane Journal of High Energy Physics, Vol. 2013, Issue 3 https://doi.org/10.1007/JHEP03(2013)122	journal	March 2013
PHOTOS - a universal Monte Carlo for QED radiative corrections: version 2.0 Barberio, Elisabetta; Wa̧s, Zbigniew Computer Physics Communications, Vol. 79, Issue 2 https://doi.org/10.1016/0010-4655(94)90074-4	journal	April 1994
J/ψ suppression by quark-gluon plasma formation Matsui, T.; Satz, H. Physics Letters B, Vol. 178, Issue 4 https://doi.org/10.1016/0370-2693(86)91404-8	journal	October 1986
A contribution to the suppression of the meson produced in high-energy nucleus-nucleus collisions Gerschel, C.; Hüfner, J. Physics Letters B, Vol. 207, Issue 3 https://doi.org/10.1016/0370-2693(88)90570-9	journal	June 1988
Using nuclei to probe hadronization in QCD Brodsky, Stanley J.; Mueller, A. H. Physics Letters B, Vol. 206, Issue 4 https://doi.org/10.1016/0370-2693(88)90719-8	journal	June 1988
suppression from hadron-nucleus to nucleus-nucleus collisions Gavin, S.; Vogt, R. Nuclear Physics B, Vol. 345, Issue 1 https://doi.org/10.1016/0550-3213(90)90610-P	journal	November 1990
The EvtGen particle decay simulation package Lange, David J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 462, Issue 1-2 https://doi.org/10.1016/S0168-9002(01)00089-4	journal	April 2001
Geant4—a simulation toolkit Agostinelli, S.; Allison, J.; Amako, K. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3 https://doi.org/10.1016/S0168-9002(03)01368-8	journal	July 2003
Are the J/ψ and χc A dependencies the same? Vogt, R. Nuclear Physics A, Vol. 700, Issue 1-2 https://doi.org/10.1016/S0375-9474(01)01313-6	journal	March 2002
Thermal bottomonium suppression at RHIC and LHC Strickland, Michael; Bazow, Dennis Nuclear Physics A, Vol. 879 https://doi.org/10.1016/j.nuclphysa.2012.02.003	journal	April 2012
PYTHIA 6.4 physics and manual Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Journal of High Energy Physics, Vol. 2006, Issue 05 https://doi.org/10.1088/1126-6708/2006/05/026	journal	May 2006
Real-time static potential in hot QCD Laine, Mikko; Philipsen, Owe; Tassler, Marcus Journal of High Energy Physics, Vol. 2007, Issue 03 https://doi.org/10.1088/1126-6708/2007/03/054	journal	March 2007
Energy dependence of J/ψ absorption in proton-nucleus collisions Lourenço, Carlos; Vogt, Ramona; Wöhri, Hermine K. Journal of High Energy Physics, Vol. 2009, Issue 02 https://doi.org/10.1088/1126-6708/2009/02/014	journal	February 2009
Indications of Suppression of Excited Υ States in Pb-Pb Collisions at s NN = 2.76 TeV Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review Letters, Vol. 107, Issue 5 https://doi.org/10.1103/PhysRevLett.107.052302	journal	July 2011
Measurement of the Pseudorapidity and Centrality Dependence of the Transverse Energy Density in Pb-Pb Collisions at s NN = 2.76 TeV Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review Letters, Vol. 109, Issue 15 https://doi.org/10.1103/PhysRevLett.109.152303	journal	October 2012
Observation of Sequential Υ Suppression in PbPb Collisions Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review Letters, Vol. 109, Issue 22 https://doi.org/10.1103/PhysRevLett.109.222301	journal	November 2012
Measurement of the Υ ( 1 S ) , Υ ( 2 S ) , and Υ ( 3 S ) Polarizations in p p Collisions at s = 7 TeV Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review Letters, Vol. 110, Issue 8 https://doi.org/10.1103/PhysRevLett.110.081802	journal	February 2013
Nuclear dependence of the production of Υ resonances at 800 GeV Alde, D. M.; Baer, H. W.; Carey, T. A. Physical Review Letters, Vol. 66, Issue 18 https://doi.org/10.1103/PhysRevLett.66.2285	journal	May 1991
ϒ Production in p p ¯ Collisions at s = 1.8 TeV Abe, F.; Albrow, M. G.; Amendolia, S. R. Physical Review Letters, Vol. 75, Issue 24 https://doi.org/10.1103/PhysRevLett.75.4358	journal	December 1995
ϒ Production and Polarization in p p ¯ Collisions at s = 1.8 TeV Acosta, D.; Affolder, T.; Akimoto, H. Physical Review Letters, Vol. 88, Issue 16 https://doi.org/10.1103/PhysRevLett.88.161802	journal	April 2002
Color Screening Melts Quarkonium Mócsy, Ágnes; Petreczky, Péter Physical Review Letters, Vol. 99, Issue 21 https://doi.org/10.1103/PhysRevLett.99.211602	journal	November 2007
Bottomonia in the quark-gluon plasma and their production at RHIC and LHC Emerick, A.; Zhao, X.; Rapp, R. The European Physical Journal A, Vol. 48, Issue 5 https://doi.org/10.1140/epja/i2012-12072-y	journal	May 2012
Charmonium dissociation and recombination at RHIC and LHC Capella, A.; Bravina, L.; Ferreiro, E. G. The European Physical Journal C, Vol. 58, Issue 3 https://doi.org/10.1140/epjc/s10052-008-0772-6	journal	October 2008
Heavy quarkonium: progress, puzzles, and opportunities Brambilla, N.; Eidelman, S.; Heltsley, B. K. The European Physical Journal C, Vol. 71, Issue 2 https://doi.org/10.1140/epjc/s10052-010-1534-9	journal	February 2011

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Prospects for Quarkonium Measurements in p–A and A–A Collisions at the LHC Winn, Michael Few-Body Systems, Vol. 58, Issue 2 https://doi.org/10.1007/s00601-016-1189-7	journal	January 2017
Precision measurements of Higgs couplings: implications for new physics scales Englert, C.; Freitas, A.; Mühlleitner, M. M. Journal of Physics G: Nuclear and Particle Physics, Vol. 41, Issue 11 https://doi.org/10.1088/0954-3899/41/11/113001	journal	September 2014
Thermalization of quarkonia at energies available at the CERN Large Hadron Collider Gupta, Sourendu; Sharma, Rishi Physical Review C, Vol. 89, Issue 5 https://doi.org/10.1103/physrevc.89.057901	journal	May 2014
Shadowing effects on J / ψ and Υ production at energies available at the CERN Large Hadron Collider Vogt, R. Physical Review C, Vol. 92, Issue 3 https://doi.org/10.1103/physrevc.92.034909	journal	September 2015
Suppression versus enhancement of heavy quarkonia in p A collisions Kopeliovich, B. Z.; Schmidt, Iván; Siddikov, M. Physical Review C, Vol. 95, Issue 6 https://doi.org/10.1103/physrevc.95.065203	journal	June 2017
Color screening and regeneration of bottomonia in high-energy heavy-ion collisions Du, X.; He, M.; Rapp, R. Physical Review C, Vol. 96, Issue 5 https://doi.org/10.1103/physrevc.96.054901	journal	November 2017
Measurement of Prompt ψ ( 2 S ) to J / ψ Yield Ratios in Pb-Pb and p - p Collisions at s N N = 2.76 TeV Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. Physical Review Letters, Vol. 113, Issue 26 https://doi.org/10.1103/physrevlett.113.262301	journal	December 2014
Relative Modification of Prompt ψ ( 2 S ) and J / ψ Yields from p p to PbPb Collisions at s N N = 5.02 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. Physical Review Letters, Vol. 118, Issue 16 https://doi.org/10.1103/physrevlett.118.162301	journal	April 2017
Suppression of Excited ϒ States Relative to the Ground State in Pb-Pb Collisions at s NN = 5.02 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. Physical Review Letters, Vol. 120, Issue 14 https://doi.org/10.1103/physrevlett.120.142301	journal	April 2018
Suppression and azimuthal anisotropy of prompt and nonprompt $${\mathrm{J}}/\psi $$ J / ψ production in PbPb collisions at $$\sqrt{{s_{_{\text {NN}}}}} =2.76$$ s NN = 2.76 $$\,\mathrm{TeV}$$ TeV Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. The European Physical Journal C, Vol. 77, Issue 4 https://doi.org/10.1140/epjc/s10052-017-4781-1	journal	April 2017
Measurement of exclusive $$\mathrm {\Upsilon }$$ Υ photoproduction from protons in $$\mathrm {p}$$ p Pb collisions at $$\sqrt{\smash [b]{s_{_{\mathrm {NN}}}}} = 5.02\,\text {TeV} $$ s NN = 5.02 TeV Sirunyan, A. M.; Tumasyan, A.; Adam, W. The European Physical Journal C, Vol. 79, Issue 3 https://doi.org/10.1140/epjc/s10052-019-6774-8	journal	March 2019
Suppression of Excited Υ States Relative to the Ground State in Pb-Pb Collisions at √sNN=5.02 TeV Collaboration, Cms; M., Sirunyan, Albert; Felix, Bachmair, ETH Zurich https://doi.org/10.3929/ethz-b-000258156	text	January 2018

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