Jet Quenching via Jet Collimation

May 24, 2011, 3:40 PM
20m
Salle de l'Europe (Imperial Palace)

Salle de l'Europe

Imperial Palace

Allée Impérial 74000 Annecy, France Tél. : +33 4 50 09 30 00
Parallel Jets Jets

Speaker

Dr José Guilherme Milhano (Instituto Superior Tecnico (IST) and CERN PH-TH)

Description

The ATLAS and CMS Collaborations recently reported strong modifications of dijet properties in heavy ion collisions. In this work, we discuss the extent to which these first data constrain the microscopic mechanism underlying jet quenching. Simple kinematic arguments lead us to identify a frequency collimation mechanism via which the medium efficiently trims away the soft components of the jet parton shower. Through this mechanism, the observed dijet asymmetry can be accomodated with values of $\hat{q}\, L$ that lie in the expected order of magnitude.

Primary authors

Dr Jorge Casalderrey Solana (CERN PH-TH) Dr José Guilherme Milhano (Instituto Superior Tecnico (IST) and CERN PH-TH) Dr Urs Wiedemann (CERN PH-TH)

Presentation materials