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相关论文: Discovering the constrained NMSSM with tau leptons…

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We study the Minimal Supersymmetric Standard Model (MSSM) with large gluino mass m_{\tilde{g}} >> 1 TeV. In particular, we discuss the LHC supersymmetry discovery signatures with n leptons + jets + E^{miss}_T, n >= 0 for the MSSM with large…

高能物理 - 唯象学 · 物理学 2010-04-21 Yu. M. Andreev , N. V. Krasnikov , A. N. Toropin

We examine scenarios in the Next-to-Minimal Supersymmetric Standard Model (NMSSM), where pair-produced squarks and gluinos decay via two cascades, each ending in a stable neutralino as Lightest Supersymmetric Particle (LSP) and a Standard…

高能物理 - 唯象学 · 物理学 2018-11-14 A. Titterton , U. Ellwanger , H. U. Flaecher , S. Moretti , C. H. Shepherd-Themistocleous

In this work, we present mass limits on gluinos and stops in a natural Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a singlino as the lightest supersymmetric particle. Motivated by naturalness, we consider spectra with light…

高能物理 - 唯象学 · 物理学 2016-03-23 Jong Soo Kim , Daniel Schmeier , Jamie Tattersall

We discuss several phenomenological aspects of the fully constrained version of the next-to-minimal supersymmetric extension of the standard model (cNMSSM). Assuming universal boundary conditions at a high energy scale for the soft…

高能物理 - 唯象学 · 物理学 2009-04-17 A. Djouadi , U. Ellwanger , A. M. Teixeira

We present a benchmark in the parameter space of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) that provides for a dramatic multi-lepton signal and no jets containing 5 or more leptons resulting from the cascade decays of the…

高能物理 - 唯象学 · 物理学 2011-03-25 Vernon Barger , Gabe Shaughnessy , Brian Yencho

Constraints from searches for squarks and gluinos at the LHC at sqrt{s}=8 TeV are applied to the parameter space of the NMSSM with universal squark/slepton and gaugino masses at the GUT scale, but allowing for non-universal soft Higgs mass…

高能物理 - 唯象学 · 物理学 2015-06-12 Debottam Das , Ulrich Ellwanger , Ana M. Teixeira

We study the implications at the LHC for the minimal (least) version of the supersymmetric standard model. In this model supersymmetry is broken by gravity and extra gauge interactions effects, providing a spectrum similar in several…

高能物理 - 唯象学 · 物理学 2014-04-15 J. de Blas , A. Delgado , B. Ostdiek

Recent LHC data significantly extend the exclusion limits for supersymmetric particles, particularly in the jets plus missing transverse momentum channels. The most recent such data have so far been interpreted by the experiment in only two…

高能物理 - 唯象学 · 物理学 2015-05-30 B. C. Allanach , T. J. Khoo , K. Sakurai

We study supersymmetric scenarios in which the gluino is the next-to-lightest supersymmetric particle (NLSP), with a mass sufficiently close to that of the lightest supersymmetric particle (LSP) that gluino coannihilation becomes important.…

高能物理 - 唯象学 · 物理学 2016-03-23 John Ellis , Jason L. Evans , Feng Luo , Keith A. Olive

We revisit the current LHC constraints on the electroweak-ino sector parameters in the minimal supersymmetric standard model (MSSM) that are relevant to explaining the $(g-2)_\mu$ anomaly via the dominant chargino and muon sneutrino loop.…

高能物理 - 唯象学 · 物理学 2018-04-04 Kaoru Hagiwara , Kai Ma , Satyanarayan Mukhopadhyay

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…

高能物理 - 唯象学 · 物理学 2009-11-07 S. I. Bityukov , N. V. Krasnikov

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…

高能物理 - 唯象学 · 物理学 2007-05-23 S. I. Bityukov , N. V. Krasnikov

The low-scale gauge mediation scenario of supersymmetry breaking predicts very light gravitino, which makes the next lightest supersymmetric particle (NLSP) quasi stable. We study the LHC phenomenology of the case that the NLSP is the stau.…

高能物理 - 唯象学 · 物理学 2015-06-03 Masaki Asano , Takumi Ito , Shigeki Matsumoto , Takeo Moroi

We analyse relevant signals expected at the LHC, assuming that the gluino is the lightest supersymmetric particle (LSP) in the framework of the $\mu\nu$SSM. In this $R$-parity violating model, the presence of couplings involving…

The new minimal supersymmetric standard model (nMSSM), a variant of the general next to minimal supersymmetric standard model (NMSSM) without $Z_3$ symmetry, features a naturally light singlino with a mass below 75 GeV. In light of the new…

高能物理 - 唯象学 · 物理学 2016-02-17 D. Barducci , G. Bélanger , C. Hugonie , A. Pukhov

It was shown in a previous study that a lightest neutralino with mass below 30 GeV was severely constrained in the minimal supersymmetric standard model (MSSM), unless it annihilates via a light stau and thus yields the observed dark matter…

高能物理 - 唯象学 · 物理学 2015-06-05 Genevieve Belanger , Sanjoy Biswas , Celine Boehm , Biswarup Mukhopadhyaya

Gauge Mediated Supersymmetry Breaking (GMSB) models provide a possible mechanism to mediate Supersymmetry to the visible sector. In these models the lightest supersymmetric particle (LSP) is usually the gravitino, while the next-to-lightest…

高能物理 - 实验 · 物理学 2019-08-13 Dorthe Ludwig

A search is presented for gluinos decaying via the supersymmetric partner of the top quark using events with two same-sign leptons, jets and missing transverse momentum. The analysis is performed with 2.05 fb^-1 of integrated luminosity…

高能物理 - 实验 · 物理学 2012-08-27 ATLAS Collaboration

In the presence of a light singlino-like LSP in the NMSSM, the missing transverse energy - MET - signature of squark/gluino production can be considerably reduced. Instead, a pair of Higgs bosons is produced in each event. We propose…

高能物理 - 唯象学 · 物理学 2015-05-20 Ulrich Ellwanger , Ana M. Teixeira

We analyze models of extended Gauge Mediation in the context of the NMSSM, concentrating on supersymmetric spectra with light gluinos, low fine-tuning and decays of the lightest neutralino leading to displaced vertices. While the minimal…

高能物理 - 唯象学 · 物理学 2019-02-20 Marcin Badziak , Nishita Desai , Cyril Hugonie , Robert Ziegler
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