RT Journal Article
T1 The 28 GeV dimuon excess in lepton specific THDM
A1 Çiçi, Ali
A1 Khalil, Shaaban
A1 Nis, Büsra
A1 Ün, Cem Salih
AB We explore the Higgs mass spectrum in a class of Two Higgs Doublet Models (THDMs) in which a scalar SU(2)Ldoublet interacts only with quarks, while the second one interacts only with leptons. The spectrum includes two CP-even Higgs bosons, either of which can account for the SM-like Higgs boson, and the spectra involving light Higgs bosons receive strong impacts from the LEP results and the current collider analyses. We find that a consistent spectrum can involve a CP-odd Higgs boson as light as about 10 GeV, while the lightest CP-even Higgs boson cannot be lighter than about 55 GeV when mA∼28GeV. These analyses can rather bound the low tanβregion which can also accommodate an observed excess in dimuon events at mμμ∼28GeV. A lepton-specific class of THDMs (LS-THDM) can predict such an excess through A →μμdecays, while the solutions can be constrained by the A →ττmode. After constraining the solutions with the consistent ranges of σ(pp→bbA →bbττ), a largest excess at about 1.5σat 8 TeV center of mass (COM) energy and 2σat 13 TeV COM is observed for tanβ∼12and mA∼28GeV in the σ(pp→bbA →bbμμ)events
PB Elsevier
SN 0550-3213
YR 2022
FD 2022-03
LK http://hdl.handle.net/10272/20962
UL http://hdl.handle.net/10272/20962
LA eng
NO Çiçi, A., Khalil, S., Niş, B., & Ün, C. S. (2022). The 28 GeV dimuon excess in lepton specific THDM. In Nuclear Physics B (Vol. 977, p. 115728). Elsevier BV. https://doi.org/10.1016/j.nuclphysb.2022.115728
NO CSU thanks the Physics and Astronomy Department and Bartol Research Institute of the University of Delaware where part of this work has been done. The research of C.S.U. was supported in part by the Spanish MICINN, under grant PID2019-107844GB-C22. Part of the calculations reported in this paper were performed at the National Academic Network and In-formation Center (ULAKBIM) of TUBITAK, High Performance and Grid Computing Center (TRUBA Resources)
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026