Contribution to a conference proceedings/Internal Report

PUBDB-2015-05655

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png LHCb results in proton-nucleus collisions at the LHC

Mueller, K.

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/251

Report No.: DESY-PROC-2014-04

Abstract: The forward acceptance of the LHCb detector allows it to probe proton-ion collision in a unique kinematic range, complementary to the other LHC experiments.The production of $J/\Psi$ and $\Upsilon$-mesons decaying into two muons is studied at the LHCb experiment in proton-lead collisions at a proton-nucleon centre-of-mass energy$\sqrt{s_{NN}} =$ 5 TeV. The analysis is based on a data sample corresponding to an integrated luminosity of 1.6 nb$^{-1}$. The nuclear modification factor and the forward-backward production ratio are determined for $J/\Psi$ and $\Upsilon$(1S) mesons. Clear suppression of prompt $J/\Psi$ production is observed with respect to the production in $pp$ collisions at large rapidity, while the suppression of $J/\Psi$from $b$-hadron decays is less pronounced. The nuclear modification factor for $\Upsilon$(1S) mesons in the forward region is found to be similar to those for $J/\Psi$ from $b$-hadron decays.Furthermore a first observation of $Z$ bosons in proton-lead collisions is reported.

Keyword(s): talk: Hamburg 2014/08/24 ; p nucleus: interaction ; LHC-B ; CERN LHC Coll ; J/psi(3100): suppression ; upsilon mesons: hadroproduction ; acceptance ; kinematics ; rapidity ; experimental results ; 5020 GeV-cms/nucleon

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Database coverage:

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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