Exclusive $\pi^+\pi^-$ Production at the LHC with Forward Proton Tagging

• Main Authors: Staszewski, R, Lebiedowicz, P, Trzebinski, M, Chwastowski, J, Szczurek, A
• Format: Journal Article
• Language: English
• Published: 18-04-2011
• Subjects: Physics - High Energy Physics - Experiment; Physics - High Energy Physics - Phenomenology
• DOI: 10.48550/arxiv.1104.3568

Acta Physica Polonica B vol. 42 (2011) page 1861 A process of Central Exclusive $\pi^+\pi^-$ production in proton-proton
collisions and its theoretical description is presented. A possibility of its
measurement, during the special low luminosity LHC runs, with the help of the
ATLAS central detector for measuring pions and the ALFA stations for tagging
the scattered protons is studied. A visible cross section is estimated to be 21
$\mu$b for $\sqrt{s}=7$ TeV, which gives over 2000 events for 100 $\mu$b$^{-1}$
of integrated luminosity. Differential distributions in pion pseudorapidities,
pion and proton transverse momenta as well as $\pi^+\pi^-$ invariant mass are
shown and discussed.