CERN Accelerating science

Article
Report number arXiv:2110.05916 ; CMS-EXO-18-014 ; TOTEM-2021-002 ; CERN-EP-2021-191
Title First search for exclusive diphoton production at high mass with tagged protons in proton-proton collisions at s= 13 TeV
Author(s) CMS Collaboration  Показване на всичките 2412 автора
Corporate Author(s) CMS Collaboration ; TOTEM Collaboration
Publication 2022-06-28
Imprint 12 Oct 2021
Number of pages 31
Note Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-18-014 (CMS Public Pages)
In: Phys. Rev. Lett. 129 (2022) 011801
DOI 10.1103/PhysRevLett.129.011801 (publication)
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; CMS ; TOTEM
CERN LHC ; CMS
CERN LHC ; TOTEM
Free keywords exotics
Abstract A search for exclusive two-photon production via photon exchange in proton-proton collisions, pp pγγp with intact protons, is presented. The data correspond to an integrated luminosity of 9.4 fb1 collected in 2016 using the CMS and TOTEM detectors at a center-of-mass energy of 13 TeV at the LHC. Events are selected with a diphoton invariant mass above 350 GeV and with both protons intact in the final state, to reduce backgrounds from strong interactions. The events of interest are those where the invariant mass and rapidity calculated from the momentum losses of the forward-moving protons matches the mass and rapidity of the central, two-photon system. No events are found that satisfy this condition. Interpreting this result in an effective dimension-8 extension of the standard model, the first limits are set on the two anomalous four-photon coupling parameters. If the other parameter is constrained to its standard model value, the limits at 95% CL are |ζ1| < 2.9 × 1013 GeV4 and |ζ2| < 6.0 × 1013 GeV4.
Related document supersedes: CMS-PAS-EXO-18-014
Copyright/License publication: © 2022 CERN, for the CMS and TOTEMs Collaboration (License: CC-BY-4.0)
preprint: © 2021-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: cms-publication-committee-chair@cern.ch


 Записът е създаден на 2021-10-12, последна промяна на 2024-12-27


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