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arXiv · 1611.07483

Monte Carlo study of particle production in diffractive proton-proton collisions at $\sqrt s$ = 13 TeV with the very forward detector combined with central information

Qi-Dong Zhou·Yoshitaka Itow·Hiroaki Menjo·Takashi Sako
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Abstract

Very forward (VF) detectors in hadron colliders, having unique sensitivity to diffractive processes, can be a powerful tool for studying diffractive dissociation by combining them with central detectors. Several Monte Carlo simulation samples in $p$-$p$ collisions at $\sqrt s = 13$ TeV were analyzed, and different nondiffractive and diffractive contributions were clarified through differential cross sections of forward neutral particles. Diffraction selection criteria in the VF-triggered-event samples were determined by using the central track information. The corresponding selection applicable in real experiments has $\approx$100% purity and 30%-70% efficiency. Consequently, the central information enables classification of the forward productions into diffraction and nondiffraction categories; in particular, most of the surviving events from the selection belong to low-mass diffraction events at $\log_{10}(ξ_{x}) < -5.5$. Therefore, the combined method can uniquely access the low-mass diffraction regime experimentally.

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Qi-Dong Zhou, Yoshitaka Itow, Hiroaki Menjo, Takashi Sako. 2016-12-07. Monte Carlo study of particle production in diffractive proton-proton collisions at $\sqrt s$ = 13 TeV with the very forward detector combined with central information. https://doi.org/10.1140/epjc%2Fs10052-017-4788-7

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