10–14 Dec 2018
Auditorium Santa Cecilia , Perugia, Italy
Europe/Zurich timezone
2008 - 2018

Particle multiplicities in the central region of high-energy collisions from $k_T$-factorization with running coupling corrections

Not scheduled
20m
Auditorium Santa Cecilia , Perugia, Italy

Auditorium Santa Cecilia , Perugia, Italy

Via Fratti, 2 - 06123 Perugia Italy

Speaker

Andre Veiga Giannini

Description

Horowitz and Kovchegov have derived a $k_T$-factorization formula for particle production at small $x$ which includes running coupling corrections. We perform a first numerical analysis to confront the theory with data on the energy and centrality dependence of particle multiplicities at midrapidity in high-energy p+A (and A+A) collisions. Moreover, we point out a strikingly different dependence of the multiplicity per participant on $N_\text{part}$ in p+Pb vs. Pb+Pb collisions at LHC energies, and argue that the observed behavior follows rather naturally from the convolution of the gluon distributions of an asymmetric vs.symmetric projectile and target.

Primary author

Co-authors

Adrian Dumitru (Baruch College (City University of New York)) Prof. Matthew Luzum Yasushi Nara (Akita International University)

Presentation materials

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