Jet substructure modification in a QGP from a multi-scale description of jet evolution with JETSCAPE

Yasuki Tachibana, Angerami A.,Bass S. A.,Cao S.,Coleman J., Cunqueiro L.,Dai T.,Du L.,Elfner H.,Everett D., Fan W.,Fries R.,Gale C.,He Y.,Heinz U., Jacak B. V., Jacobs P. M.,Jeon S.,Kauder K., Ke W., Khalaj E.,Kordell II M.,Kumar A., Luo T.,Majumder A., McNelis M.,Nattrass C.,Oliinychenko D.,Pablos D.,Pang L. G.,Park C.,Paquet J. -F., Putschke J. H., Roland G.,Schenke B.,Schwiebert L.,Shen C.,Sirimanna C., Soltz R. A., Vujanovic G.,Wang X. -N.,Wolpert R. L.,Xu Y.,Yang Z.

arXiv: Nuclear Theory（2018）

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摘要

The modification of jet substructure in relativistic heavy-ion collisions is studied using JETSCAPE, a publicly available software package containing a framework for Monte Carlo event generators. Multi-stage jet evolution in JETSCAPE provides an integrated description of jet quenching by combining multiple models, with each becoming active at a different stage of the parton shower evolution. Jet substructure modification due to different aspects of jet quenching is studied using jet shape and jet fragmentation observables. Various combinations of jet energy loss models are exploed, with medium background provided by (2 + 1)-D VISHNU with TRENTo+freestreaming initial conditions. Results reported here are from simulations performed within JETSCAPE framework.

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