In this paper we simultaneously explain the excesses of the 750 GeV diphoton, muon g-2 and h -> mu tau in an extension of the two-Higgs-doublet model (2HDM) with additional vector-like fermions and a CP-odd scalar singlet (P) which is identified as the 750 GeV resonance. This 750 GeV resonance has a mixing with the CP-odd scalar (A) from a second scalar doublet, which leads to a coupling between P and the SM particles as well as a coupling between A and the vector-like fermions. Such mixing and couplings are strongly constrained by tau -> mu gamma, muon g-2 and the 750 GeV diphoton data. We scan over the parameter space and find that such an extension can simultaneously account for the observed excesses of 750 GeV diphoton, muon g-2 and h -> mu tau. The 750 GeV resonance decays in exotic modes, such as P -> hA, P -> H Z, P -> H A and P -> W-+/- H--/+ and its width can be dozens of GeV and is sensitive to the mixing angle. (C) 2016 The Authors. Published by Elsevier B.V.
机构:
Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R ChinaCent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China
Li, Shao-Ping
Li, Xin-Qiang
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Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R ChinaCent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China
Li, Xin-Qiang
Yang, Ya-Dong
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Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R ChinaCent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China
机构:
Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
Osaka Univ, Grad Sch Informat Sci & Technol, Suita, Osaka 5650871, JapanSun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
Takeuchi, Michihisa
Iguro, Syuhei
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Karlsruhe Inst Technol KIT, Inst Theoret Particle Phys TTP, Wolfgang Gaede Str 1, D-76131 Karlsruhe, Germany
KIT, Inst Astroparticle Phys IAP, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, GermanySun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
Iguro, Syuhei
Kitahara, Teppei
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Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Universe, Nagoya 4648602, Japan
Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R ChinaSun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
Kitahara, Teppei
Lang, Martin S.
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Karlsruhe Inst Technol KIT, Inst Theoret Particle Phys TTP, Wolfgang Gaede Str 1, D-76131 Karlsruhe, GermanySun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
机构:
Univ Lisboa UL, Inst Super Tecn IST, Dept Fis, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
Univ Lisboa UL, Inst Super Tecn IST, Ctr Fis Teor Particulas CFTP, Av Rovisco Pais 1, P-1049001 Lisbon, PortugalUniv Valencia, CSIC, Dept Fis Teor, E-46100 Burjassot, Spain
机构:
High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, JapanHigh Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan
Abe, Tomohiro
Sato, Ryosuke
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High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, JapanHigh Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan
Sato, Ryosuke
Yagyu, Kei
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Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, EnglandHigh Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan