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We study the potential of neutralino dark matter searches and SUSY particle production at colliders in the framework of the Minimal Supersymmetric Standard Model. We show the effects of a non universal gluino mass parameter. The future…

High Energy Physics - Phenomenology · Physics 2007-05-23 E. Nezri

Inspired by split supersymmetry, we study a minimal supersymmetric scenario with only the Higgsino mass parameter $\mu$ below the TeV scale. The motivation is to satisfy the gauge coupling unification and dark matter constraints with the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Kingman Cheung , Cheng-Wei Chiang , Jeonghyeon Song

We investigate the constraints to the light neutralino dark matter scenario in the minimal supersymmetric standard model from available experimental observations such as decays of B and K meson, relic dark matter abundance, and the search…

High Energy Physics - Phenomenology · Physics 2015-03-19 Lorenzo Calibbi , Toshihiko Ota , Yasutaka Takanishi

We review constraints on the minimal supersymmetric extension of the Standard Model (MSSM) coming from direct searches at accelerators such as LEP, indirect measurements such as b -> s gamma decay and the anomalous magnetic moment of the…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis , Keith Olive , Yudi Santoso

The MSSM predictions at the one-loop level for the weak-magnetic dipole moments of the $\tau$ lepton and the $b$ quark are analysed. The entire supersymmetric parameter space is scannedwith the usual GUT constraint and common squark and…

High Energy Physics - Phenomenology · Physics 2014-11-17 W. Hollik , J. I. Illana , S. Rigolin , D. Stöckinger

We study the problem of selecting between different mechanisms of supersymmetry breaking in the Minimal Supersymmetric Standard Model using current data. We evaluate the Bayesian evidence of four supersymmetry breaking scenarios: mSUGRA,…

High Energy Physics - Phenomenology · Physics 2010-09-30 S. S. AbdusSalam , B. C. Allanach , M. J. Dolan , F. Feroz , M. P. Hobson

We investigate a scenario inspired by natural supersymmetry, where neutrino data is explained within a low-scale seesaw scenario. For this the Minimal Supersymmetric Standard Model is extended by adding light right-handed neutrinos and…

High Energy Physics - Phenomenology · Physics 2021-07-08 Joaquin Masias

The structure of low-energy supersymmetric models of fundamental particles and interactions is reviewed, with an emphasis on the minimal supersymmetric extension of the Standard Model (MSSM) and some of its variants. Various approaches to…

High Energy Physics - Phenomenology · Physics 2009-07-07 Howard E. Haber

We consider very constrained versions of the minimal supersymmetric extension of the Standard Model (VCMSSMs) which, in addition to constraining the scalar masses m_0 and gaugino masses m_{1/2} to be universal at some input scale, impose…

High Energy Physics - Phenomenology · Physics 2008-11-26 John Ellis , Keith A. Olive , Yudi Santoso , Vassilis C. Spanos

We consider regions of the parameter space of the Minimal Supersymmetric Standard Model (MSSM) with bino-like neutralino dark matter in which a large fraction of the total dark matter annihilation cross section in the present era arises…

High Energy Physics - Phenomenology · Physics 2013-08-09 Jason Kumar , Pearl Sandick

We present the currently most accurate evaluation of the W boson mass, M_W, in the Minimal Supersymmetric Standard Model (MSSM). The full complex phase dependence at the one-loop level, all available MSSM two-loop corrections as well as the…

High Energy Physics - Phenomenology · Physics 2010-02-03 S. Heinemeyer , W. Hollik , D. Stockinger , A. M. Weber , G. Weiglein

Within the minimal Left-Right (LR) symmetric model we revisit the predictions for the kaon CP violating observables $\varepsilon$ and $\varepsilon'$ in correlation with the neutron electric dipole moment. We perform a complete study of the…

High Energy Physics - Phenomenology · Physics 2020-03-09 Stefano Bertolini , Alessio Maiezza , Fabrizio Nesti

I define the Standard Supersymmetric Model (SSM) as the minimal supersymmetric extension ofthe Standard Model with gauge coupling unification and universal soft supersymmetry breaking at the unification scale. This well-defined model has a…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Kelley

Prospects for direct dark matter detection are considered in the Next-to-Minimal Supersymmetric Standard Model (NMSSM). The effective neutralino-quark Lagrangian is obtained and event rates are calculated for Ge-73. Accelerator and…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. A. Bednyakov , H. V. Klapdor-Kleingrothaus

We propose the minimal supersymmetric sterile neutrino model (MSSNM) where the sterile neutrino masses are about 1 eV, while the active neutrino masses and the mixings among the active and sterile neutrinos are generated during late time…

High Energy Physics - Phenomenology · Physics 2008-11-26 Junhai Kang , Tianjun Li

We update the electroweak study of the predictions of the Minimal Supersymmetric Standard Model (MSSM) including the recent results on the muon anomalous magnetic moment, the weak boson masses, and the final precision data on the Z boson…

High Energy Physics - Phenomenology · Physics 2015-05-27 Gi-Chol Cho , Kaoru Hagiwara , Yu Matsumoto , Daisuke Nomura

Very precise measurements of masses and cross sections are expected to be achievable with a future linear collider. With such an accuracy one must incorporate loop corrections in order to make meaningful predictions for the underlying new…

High Energy Physics - Phenomenology · Physics 2013-09-26 Aoife Bharucha

We derive new constraints on light vectors coupled to Standard Model (SM) fermions, when the corresponding SM current is broken by the chiral anomaly. Cancellation of the anomaly by heavy fermions results, in the low-energy theory, in…

High Energy Physics - Phenomenology · Physics 2021-02-05 Jeff A. Dror , Robert Lasenby , Maxim Pospelov

The gauged $U(1)_{L_{\mu}-L_{\tau}}$ model can provide for additional contributions to the muon anomalous magnetic moment by means of a loop involving the $Z^{\prime}$ gauge boson. However, the parameter space of such models is severely…

High Energy Physics - Phenomenology · Physics 2018-11-06 Heerak Banerjee , Pritibhajan Byakti , Sourov Roy

We study the neutralino sector of the Minimal Non-minimal Supersymmetric Standard Model (MNSSM) where the $\mu$ problem of the Minimal Supersymmetric Standard Model (MSSM) is solved without accompanying problems related with the appearance…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Hesselbach , D. J. Miller , G. Moortgat-Pick , R. Nevzorov , M. Trusov