Search for high-mass exclusive diphoton production with tagged protons in proton-proton collisions at √s = 13 TeV

Belyaev, A.V.; Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.A.; Gribushin, A.; Klyukhin, V.; Kodolova, O.; Lukina, O.; Obraztsov, S.; Petrushanko, S.V.; Savrin, V.; CMS, C.

Авторы: Belyaev A.V., Boos E., Dubinin M., Dudko L., Ershov A.A., Gribushin A., Klyukhin V., Kodolova O., Lukina O., Obraztsov S., Petrushanko S.V., Savrin V., CMS Collaboration
Журнал: Physical Review D
Том: 110
Год издания: 2024
Издательство: American Physical Society
Местоположение издательства: United States
Первая страница: 012010
DOI: 10.1103/PhysRevD.110.012010
Аннотация: 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 (p_T^γ > 100 GeV), back-to-back in azimuth, and with a large diphoton invariant mass (m_γγ > 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 |ζ_1| < 0.073 TeV^−4 and |ζ_2| < 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.
Добавил в систему: Клюхин Вячеслав Иванович

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Search for high-mass exclusive diphoton production with tagged protons in proton-proton collisions at √s = 13 TeVстатья Исследовательская статья

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