Search for high-mass exclusive diphoton production with tagged protons in proton-proton collisions at √𝑠 =13 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
A search is presented for high-mass exclusive diphoton production via photon-photon fusion in proton-proton collisions at √𝑠 =13 TeV in events where both protons survive the interaction. The analysis utilizes data corresponding to an integrated luminosity of 103 fb−1 collected in 2016–2018 with the central CMS detector and the CMS and TOTEM precision proton spectrometer (PPS). Events that have two photons with high transverse momenta (𝑝𝛾
T >100 GeV), back-to-back in azimuth, and with a large diphoton invariant mass (𝑚𝛾𝛾 >350 GeV) are selected. To remove the dominant inclusive diphoton backgrounds, the kinematic properties of the protons detected in PPS are required to match those of the central diphoton system. Only events having opposite-side forward protons detected with a fractional momentum loss between 0.035 and 0.15 (0.18) for the detectors on the negative (positive) side of CMS are considered. One exclusive diphoton candidate is observed for an expected background of 1.1 events. Limits at 95% confidence level are derived for the four-photon anomalous coupling parameters |𝜁1| <0.073 TeV−4 and |𝜁2| <0.15 TeV−4, using an effective field theory. Additionally, upper limits are placed on the production of axionlike particles with coupling strength to photons 𝑓−1 that varies from 0.03 TeV−1 to 1 TeV−1 over the mass range from 500 to 2000 GeV.
T >100 GeV), back-to-back in azimuth, and with a large diphoton invariant mass (𝑚𝛾𝛾 >350 GeV) are selected. To remove the dominant inclusive diphoton backgrounds, the kinematic properties of the protons detected in PPS are required to match those of the central diphoton system. Only events having opposite-side forward protons detected with a fractional momentum loss between 0.035 and 0.15 (0.18) for the detectors on the negative (positive) side of CMS are considered. One exclusive diphoton candidate is observed for an expected background of 1.1 events. Limits at 95% confidence level are derived for the four-photon anomalous coupling parameters |𝜁1| <0.073 TeV−4 and |𝜁2| <0.15 TeV−4, using an effective field theory. Additionally, upper limits are placed on the production of axionlike particles with coupling strength to photons 𝑓−1 that varies from 0.03 TeV−1 to 1 TeV−1 over the mass range from 500 to 2000 GeV.
Date Issued
2024-07-01
Date Acceptance
2024-03-22
Citation
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2024, 110 (1)
ISSN
1550-2368
Publisher
American Physical Society
Journal / Book Title
Physical Review D: Particles, Fields, Gravitation and Cosmology
Volume
110
Issue
1
Copyright Statement
© 2024 CERN, for the CMS and TOTEMs Collaboration. Published by the American Physical Society under the terms of
the Creative Commons Attribution 4.0 International license.
Further distribution of this work must maintain attribution to
the author(s) and the published article’s title, journal citation,
and DOI. Funded by SCOAP3
.
the Creative Commons Attribution 4.0 International license.
Further distribution of this work must maintain attribution to
the author(s) and the published article’s title, journal citation,
and DOI. Funded by SCOAP3
.
License URL
Identifier
https://doi.org/10.1103/physrevd.110.012010
Publication Status
Published
Article Number
012010
Date Publish Online
2024-07-16