The ALICE Collaboration has measured inclusive J/psi production in pp collisions at a center-of-mass energy root s = 2.76 TeV at the LHC. The results presented in this Letter refer to the rapidity ranges vertical bar y vertical bar < 0.9 and 2.5 < y <4 and have been obtained by measuring the electron and muon pair decay channels, respectively. The integrated luminosities for the two channels are L-int(e) = 1.1 nb(-1) and L-int(mu) = 19.9 nb(-1), and the corresponding signal statistics are N-J/psi(e+e-) = 59 +/- 14 and N-J/psi(mu+mu-) = 1364 +/- 53. We present d sigma(J/psi)/dy for the two rapidity regions under study and, for the forward-y range, d(2)sigma(J/psi)/dydp(t) in the transverse momentum domain 0 < p(t) < 8 GeV/c. The results are compared with previously published results at root s = 7 TeV and with theoretical calculations. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.

Inclusive J/psi production in pp collisions at root s=2.76 TeV / B., A., J., A., D., A., A. M., A., M. M., A., G. A., R., A. G., A., A., A., S. A., S., Z., A., A. A., M., N., A., S. U., A., A., A., D., A., B., A., R. A., M., A., A., A., A., E. A., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 718:(2012), pp. 295-306. [10.1016/j.physletb.2012.10.078]

Inclusive J/psi production in pp collisions at root s=2.76 TeV

L. Cunqueiro;MEDDI, Franco;
2012

Abstract

The ALICE Collaboration has measured inclusive J/psi production in pp collisions at a center-of-mass energy root s = 2.76 TeV at the LHC. The results presented in this Letter refer to the rapidity ranges vertical bar y vertical bar < 0.9 and 2.5 < y <4 and have been obtained by measuring the electron and muon pair decay channels, respectively. The integrated luminosities for the two channels are L-int(e) = 1.1 nb(-1) and L-int(mu) = 19.9 nb(-1), and the corresponding signal statistics are N-J/psi(e+e-) = 59 +/- 14 and N-J/psi(mu+mu-) = 1364 +/- 53. We present d sigma(J/psi)/dy for the two rapidity regions under study and, for the forward-y range, d(2)sigma(J/psi)/dydp(t) in the transverse momentum domain 0 < p(t) < 8 GeV/c. The results are compared with previously published results at root s = 7 TeV and with theoretical calculations. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Inclusive J/psi production in pp collisions at root s=2.76 TeV / B., A., J., A., D., A., A. M., A., M. M., A., G. A., R., A. G., A., A., A., S. A., S., Z., A., A. A., M., N., A., S. U., A., A., A., D., A., B., A., R. A., M., A., A., A., A., E. A., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 718:(2012), pp. 295-306. [10.1016/j.physletb.2012.10.078]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/552700
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