TY - JOUR

T1 - Upper bound on the gluino mass in supersymmetric models with extra matters

AU - Moroi, Takeo

AU - Yanagida, Tsutomu T.

AU - Yokozaki, Norimi

N1 - Funding Information:
This work is supported by JSPS KAKENHI Grant Numbers JP26400239 (T.M.), JP26104009 (T.T.Y), JP26287039 (T.T.Y.), JP16H02176 (T.T.Y), JP15H05889 (N.Y.) and JP15K21733 (N.Y.); and by World Premier International Research Center Initiative (WPI Initiative), MEXT , Japan (T.M and T.T.Y.).
Publisher Copyright:
© 2016 The Author(s)

PY - 2016/9/10

Y1 - 2016/9/10

N2 - We discuss the upper bound on the gluino mass in supersymmetric models with vector-like extra matters. In order to realize the observed Higgs mass of 125 GeV, the gluino mass is bounded from above in supersymmetric models. With the existence of the vector-like extra matters at around TeV, we show that such an upper bound on the gluino mass is significantly reduced compared to the case of minimal supersymmetric standard model. This is due to the fact that radiatively generated stop masses as well the stop trilinear coupling are enhanced in the presence of the vector-like multiplets. In a wide range of parameter space of the model with extra matters, particularly with sizable tanβ (which is the ratio of the vacuum expectation values of the two Higgs bosons), the gluino is required to be lighter than ∼3 TeV, which is likely to be within the reach of forthcoming LHC experiment.

AB - We discuss the upper bound on the gluino mass in supersymmetric models with vector-like extra matters. In order to realize the observed Higgs mass of 125 GeV, the gluino mass is bounded from above in supersymmetric models. With the existence of the vector-like extra matters at around TeV, we show that such an upper bound on the gluino mass is significantly reduced compared to the case of minimal supersymmetric standard model. This is due to the fact that radiatively generated stop masses as well the stop trilinear coupling are enhanced in the presence of the vector-like multiplets. In a wide range of parameter space of the model with extra matters, particularly with sizable tanβ (which is the ratio of the vacuum expectation values of the two Higgs bosons), the gluino is required to be lighter than ∼3 TeV, which is likely to be within the reach of forthcoming LHC experiment.

UR - http://www.scopus.com/inward/record.url?scp=84979955072&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84979955072&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2016.07.061

DO - 10.1016/j.physletb.2016.07.061

M3 - Article

AN - SCOPUS:84979955072

VL - 760

SP - 681

EP - 688

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -