Aug 12 – 18, 2012
US/Eastern timezone

If you have any questions about the details of the program please contact Bolek Wyslouch

Fourth order corrections to the MV model, multiplicity distributions and KNO scaling

Aug 16, 2012, 4:00 PM
Regency 1/3 and Ambassador

Regency 1/3 and Ambassador

Poster Pre-equilibrium and initial state dynamics Poster Session Reception


Elena Petreska (Graduate Center/Baruch College CUNY)


A scaling law for the multiplicity distribution in high-energy hadronic collisions has been proposed by Koba, Nielsen, and Olesen (KNO). Experiments at the LHC observed that multiplicities in the central region of proton-proton collisions follow a negative binomial distribution and that they do exhibit KNO scaling. The negative binomial distribution has been theoretically reproduced in the Color Glass Condensate (CGC) formalism with a Gaussian (McLerran-Venugopalan) action. We derive corrections to the MV model up to fourth order in the density of color charges (rho^4) and investigate their implication on the multiplicity distribution and on KNO scaling. We find that KNO scaling constrains the deviation of the small-x effective action from a Gaussian.

Primary author

Elena Petreska (Graduate Center/Baruch College CUNY)

Presentation materials