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Implications of a 2 - 5.5 GeV sbottom and 12 - 16 GeV gluino masses for rare B decay phenomenology are discussed. An effective Hamiltonian is constructed in which the gluinos are integrated out and a \tilde{b} squark remains among the light…

High Energy Physics - Phenomenology · Physics 2007-05-23 Thomas Becher , Stephan Braig , Alex Kagan , Matthias Neubert

We study bound-state effects on the pair production of gluinos at hadron colliders, in a context of the minimal supersymmetric extension of the standard model. Due to the expected large mass and the octet color-charge of gluinos, the…

High Energy Physics - Phenomenology · Physics 2009-12-07 Kaoru Hagiwara , Hiroshi Yokoya

We investigate squark and gluino pair production at LHC (CMS) with subsequent decays into quarks, leptons and LSP in models with effective supersymmetry where third generation of squarks is relatively light while the first two generations…

High Energy Physics - Phenomenology · Physics 2009-11-07 S. I. Bityukov , N. V. Krasnikov

We discuss collider search strategies of gluinos which are highly degenerate with the lightest neutralino in mass. This scenario is fairly difficult to probe with conventional search strategies at colliders, and thus may provide a hideaway…

High Energy Physics - Phenomenology · Physics 2017-04-05 Natsumi Nagata , Hidetoshi Otono , Satoshi Shirai

We study theoretical and experimental facets of mass determination of new particle states. Assuming supersymmetry, we update the quark and lepton mass matrices at the grand unification scale accounting for threshold corrections enhanced by…

High Energy Physics - Phenomenology · Physics 2009-05-12 Mario Serna

NLO SUSY-QCD contributions to associated production of gluinos and gauginos are shown to enhance the cross sections by about 10% at the Tevatron and by as much as a factor of two at the LHC. They shift the mass determinations or discovery…

High Energy Physics - Phenomenology · Physics 2007-05-23 Edmond L. Berger , Michael Klasen , Tim M. P. Tait

In this paper we study an SO(10) SUSY GUT with Yukawa unification for the third generation. We perform a global chi^2 analysis given to obtain the GUT boundary conditions consistent with 11 low energy observables, including the top, bottom…

High Energy Physics - Phenomenology · Physics 2013-10-30 Archana Anandakrishnan , B. Charles Bryant , Stuart Raby , Akin Wingerter

Gauginos might play a crucial role in the search for supersymmetry at the Large Hadron Collider (LHC). Mass predictions for gauginos are rather robust and often related to the values of the gauge couplings. We analyse the ratios of gaugino…

High Energy Physics - Phenomenology · Physics 2010-10-27 Kiwoon Choi , Hans Peter Nilles

We show that it is possible to realize a "mu-split SUSY" scenario [1] in the context of large volume limit of type IIB compactifications on Swiss-Cheese Calabi-Yau's in the presence of a mobile space-time filling D3-brane and a (stack of)…

High Energy Physics - Theory · Physics 2015-05-28 Mansi Dhuria , Aalok Misra

This paper is divided into two parts. In the first part we analyze the consequences, for the LHC, of gauge and third family Yukawa coupling unification with a particular set of boundary conditions defined at the GUT scale. We perform a…

High Energy Physics - Phenomenology · Physics 2013-03-14 Archana Anandakrishnan , Stuart Raby , Akin Wingerter

We take a closer look at the gaugino masses in the context of pure gravity mediation models/minimal split SUSY models. We see that the gaugino mass spectrum has a richer structure in the presence of vector-like matter fields even when they…

High Energy Physics - Phenomenology · Physics 2015-06-17 Keisuke Harigaya , Masahiro Ibe , Tsutomu T. Yanagida

State-of-the-art predictions for the mass of the lightest MSSM Higgs boson usually involve the resummation of higher-order logarithmic contributions obtained within an effective-field-theory (EFT) approach, often combined with a fixed-order…

High Energy Physics - Phenomenology · Physics 2021-02-08 Henning Bahl , Ivan Sobolev , Georg Weiglein

We examine the possibility of distinguishing a supersymmetric gluino from a Kaluza-Klein gluon of universal extra dimensions (UED) at the Large Hadron Collider (LHC). We focus on the case when all kinematically allowed tree-level decays of…

High Energy Physics - Phenomenology · Physics 2009-09-17 Csaba Csaki , Johannes Heinonen , Maxim Perelstein

In supersymmetric models a gluino can decay into tb\tilde{\chi}^{\pm}_1 through a stop or a sbottom. The decay chain produces an edge structure in the m_{tb} distribution. Monte Carlo simulation studies show that the end point and the edge…

High Energy Physics - Phenomenology · Physics 2011-01-27 Junji Hisano , Kiyotomo Kawagoe , Mihoko M. Nojiri

We perform a threshold resummation calculation for the associated production of gluinos and gauginos at the LHC to the next-to-leading logarithmic accuracy. Analytical results are presented for the process-dependent soft anomalous dimension…

High Energy Physics - Phenomenology · Physics 2017-01-24 B. Fuks , M. Klasen , M. Rothering

We calculate decays of a Standard Model Higgs boson to a virtual massive particle and discuss how this depends on the massive particle total width. If the partial width of Higgs to a virtual massive particle can be measured this gives a…

High Energy Physics - Phenomenology · Physics 2009-10-28 D. J. Summers

In split-supersymmetry (split-SUSY), gluino is a metastable particle and thus can freeze out in the early universe. The late decay of such a long-life gluino into the lightest supersymmetric particle (LSP) may provide much of the cosmic…

High Energy Physics - Phenomenology · Physics 2009-11-11 Fei Wang , Wenyu Wang , Jin Min Yang

We investigate exclusion limits on the the non-universal gaugino mass scenario in the Minimal Supersymmetric Standard Model (MSSM), according the the latest results of the super-particle search at the LHC8 and the LHC13. In this scenario,…

High Energy Physics - Phenomenology · Physics 2016-03-23 J. Kawamura , Y. Omura

We investigate squark and gluino pair production at LHC (CMS) with subsequent decays into quarks and LSP for the case of nonuniversal gaugino masses. Visibility of signal by an excess over SM background in (n > 1)jets + E^{miss}_T events…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. I. Bityukov , N. V. Krasnikov

The estimation of the backgrounds for gluino signals in focus point supersymmetry is extended by including the backgrounds from the production of four third generation quarks in the analysis. We find that these backgrounds are negligible if…

High Energy Physics - Phenomenology · Physics 2008-11-26 Siba Prasad Das , Amitava Datta , Monoranjan Guchait , Manas Maity , Siddhartha Mukherjee