Upcgen: a Monte Carlo simulation program for dilepton pair production in ultra-peripheral collisions of heavy ions

Autor:	Nazar Burmasov, Evgeny Kryshen, Paul Bühler, Roman Lavicka
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Nuclear Theory (nucl-th) High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Nuclear Theory Hardware and Architecture FOS: Physical sciences General Physics and Astronomy Nuclear Experiment (nucl-ex) Nuclear Experiment
Popis:	Ultra-peripheral collisions (UPCs) of heavy ions can be used as a clean environment to study two-photon induced interactions such as dilepton pair photoproduction. Recently, precise data on lepton pair production in UPCs were obtained by the ATLAS experiment at the LHC where significant deviations, of up to 20%, from available theoretical predictions were observed. In this work, we present a Monte Carlo event generator, Upcgen, that implements a refined treatment of the photon flux allowing us to improve the agreement with ATLAS data at large dilepton rapidities. Besides, the new generator offers a possibility to study photon polarization effects and set arbitrary values of the lepton anomalous magnetic moment that can be used in the future studies of tau g-2 via ditau production measurements in UPCs. 28 pages, 11 figures, to be submitted to Computer Physics Communications
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c9dda4984df3799eaa868ba96577606 http://arxiv.org/abs/2111.11383 Zobrazit plný text záznamu