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Studies of dijet transverse momentum balance and pseudorapidity distributions in pPb collisions at vsNN = 5.02 TeV

Abstract: Dijet production has been measured in pPb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV. A data sample corresponding to an integrated luminosity of 35 nb-1 was collected using the Compact Muon Solenoid detector at the Large Hadron Collider. The dijet transverse momentum balance, azimuthal angle correlations, and pseudorapidity distributions are studied as a function of the transverse energy in the forward calorimeters (E4<|?|<5.2T). For pPb collisions, the dijet transverse momentum ratio and the width of the distribution of dijet azimuthal angle difference are comparable to the same quantities obtained from a simulated pp reference and insensitive to E4<|?|<5.2T. In contrast, the mean value of the dijet pseudorapidity is found to change monotonically with increasing E4<|?|<5.2T, indicating a correlation between the energy emitted at large pseudorapidity and the longitudinal motion of the dijet frame. The pseudorapidity distribution of the dijet system in minimum bias pPb collisions is compared with next-to-leading-order perturbative QCD predictions obtained from both nucleon and nuclear parton distribution functions, and the data more closely match the latter.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: European Physical Journal C, Vol. 74, Num. 7, Art. Num. 2951, (2014)

Editorial: Springer New York LLC

 Fecha de publicación: 01/07/2014

Nº de páginas: 26

Tipo de publicación: Artículo de Revista

 DOI: 10.1140/epjc/s10052-014-2951-y

ISSN: 1434-6044,1434-6052

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1140/epjc/s10052-014-2951-y