Search for invisible dark photon in gamma e scattering at future lepton colliders

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Inan S. C., Kisselev A. V.

EUROPEAN PHYSICAL JOURNAL C, cilt.82, sa.7, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 82 Sayı: 7
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1140/epjc/s10052-022-10552-1
  • Dergi Adı: EUROPEAN PHYSICAL JOURNAL C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, zbMATH, Directory of Open Access Journals
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

For the first time, the production of a massive dark photon (DP) in the gamma e(-) scattering at the future lepton colliders ILC, CLIC, and CEPC is examined. The invisible decay mode of the DP is addressed. We have studied both the unpolarized scattering and the collision of the Compton backscattered photons with the polarized electron. The missing energy distributions are shown. We have considered the wide range 1-1000 GeV of the DP mass m(A'). The excluded regions at the 95% CL in the plane (epsilon, m(A')), where s is the kinetic mixing parameter, are obtained. In particular, in the low mass region, 1-10 GeV our bounds for the 90 GeV CEPC are several times stronger than experimental limits obtained by the BaBar collaboration. For the polarized scattering, the excluded bounds for all three colliders are approximately 20% stronger as compared with the unpolarized case.