Exclusive production observed at the CMS experiment

TL;DR

This paper reports the observation of exclusive production processes at the CMS experiment, including W+W- pairs and vector mesons, providing insights into photon-induced interactions and constraints on anomalous gauge couplings.

Contribution

It presents the first measurements of exclusive W+W- pair production and vector meson production in proton-proton and proton-lead collisions at the LHC.

Findings

Observation of exclusive W+W- production constrains anomalous gauge couplings.

Measurement of the p_T distribution slope informs the production region size.

First observation of vector meson production via upsilon decay in photon-induced processes.

Abstract

Exclusive W$^{+}$W$^{-}$ pair production in photon-photon collisions during the pp runs at 7 and 8 TeV are observed and used to put constraints on the Anomalous Quartic Gauge Couplings. During the proton lead collisions in photon-induced vector meson production is observed via the decay of upsilon into two muons. The slope of the squared p$_{\rm T}$ distribution is measured to determine the size of the production region.