13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Forward Dihadron Angular Correlations in pA collisions

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster Jet modifications and high-pT hadrons Poster Session


Shu-yi Wei (Ecole Polytechnique)


Dihadron angular correlations in forward $pA$ collisions have been considered as one of the most sensitive observables to the gluon saturation effects. In general, both parton shower effects and saturation effects are responsible for the back-to-back dihadron angular de-correlations. Recent developments have allowed to incorporate the so-called parton shower effect, namely the Sudakov effect, into the small-$x$ formalism [1-3]. This, in particular, will enable us to go beyond the saturation dominant region, and conduct calculations for dihadron correlation in a much wider regime where both saturation effects and Sudakov effects are important.

In this paper [4], we carry out the first detailed numerical study in this regard, and find a very good agreement with previous RHIC $pp$ and $dAu$ data. This study can help us to establish a baseline in $pp$ collisions which contains little saturation effects, and further make predictions for dihadron angular correlations in $pAu$ collisions, which will allow to search for the signal of parton saturation.

[1] A. H. Mueller, B. W. Xiao and F. Yuan, Phys. Rev. D 88, 114010 (2013); Phys. Rev. Lett. 110, no. 8, 082301 (2013).

[2] P. Sun, C.-P. Yuan and F. Yuan, Phys. Rev. Lett. 113, no. 23, 232001 (2014); Phys. Rev. D 92, no. 9, 094007 (2015).

[3] A. H. Mueller, B. Wu, B. W. Xiao and F. Yuan, Phys. Rev. D 95, no. 3, 034007 (2017).

[4] A. Stasto, S. Y. Wei, B. W. Xiao and F. Yuan, to appear.

Content type Theory
Centralised submission by Collaboration Presenter name already specified

Primary authors

Anna Stasto (Penn State) Shu-yi Wei (Ecole Polytechnique) Bowen Xiao (Central China Normal University) Feng Yuan (LBNL)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now