Sneutrino as the lightest supersymmetric particle in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi mathvariant="normal">B</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>minimal supergravity models and signals at the LHC

Bernhardt, M. A.; Das, S.; Dreiner, Herbert K.; Grab, S.

doi:10.1103/physrevd.79.035003

Cited by 13 publications

(5 citation statements)

References 118 publications

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“…[12] studied the signature of same sign dilepton plus jets and missing energy from gluino-and squark-pair as well as the squark-gluino associated productions. Other relevant studies, some of which studied the previous signatures earlier, can be found in [22][23][24][25][26][27][28][29][30][31][32]. But these signatures are fairly model dependent thus not representative signatures of SUSY with a sneutrino LSP.…”

Section: Jhep10(2014)164mentioning

confidence: 99%

Simplified supersymmetry with sneutrino LSP at 8 TeV LHC

Guo

Kang

et al. 2014

J. High Energ. Phys.

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Abstract:The current searches of supersymmetry (SUSY) are based on the neutralino lightest sparticle (LSP). In this article we instead focus on SUSY with sneutrino LSP. It is well motivated in many contexts, especially in which sneutrino services as a dark matter candidate. We first develop a simplified model, which contains the stop, chargino/neutralino and sneutrino, to describe the LHC phenomenologies of a large class of models with sneutrino LSP. Then we investigate bounds on the model using the SUSY searches at the 8 TeV LHC. Strong exclusion limits are derived, e.g., masses of stop and chargino can be excluded up to about 900 GeV and 550 GeV, respectively. We also propose optimizations for some searches without turning to higher energy and luminosity.

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Section: Jhep10(2014)164mentioning

confidence: 99%

Simplified supersymmetry with sneutrino LSP at 8 TeV LHC

Guo

Kang

et al. 2014

J. High Energ. Phys.

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“…This issue can be resolved by imposing a Z 6 discrete symmetry, known as proton hexality (P 6 ), which leads to the same renormalizable superpotential as R-parity [11,12], but is incompatible with a GUT symmetry. Alternatively, one can impose a Z 3 -symmetry known as baryon-triality (B 3 ) [11,[13][14][15][16][17][18]. The latter allows for lepton number violating operators in the superpotential thanks to which the neutrinos acquire Majorana masses, without introducing a new very high energy Majorana mass scale [15][16][17][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Supersymmetric R -parity violating Dine-Fischler-Srednicki-Zhitnitsky axion model

Colucci¹,

Dreiner²,

Ubaldi

2019

Phys. Rev. D

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We propose a complete R-parity violating supersymmetric model with baryon triality that contains a Dine-Fischler-Srednicki-Zhitnitsky axion chiral superfield. We parametrize supersymmetry breaking with soft terms, and determine under which conditions the model is cosmologically viable. As expected we always find a region of parameter space in which the axion is a cold dark matter candidate. The mass of the axino, the fermionic partner of the axion, is controlled by a Yukawa coupling. When heavy [O(TeV)], the axino decays early and poses no cosmological problems. When light [O(keV)] it can be long lived and a warm dark matter candidate. We concentrate on the latter case and study in detail the decay modes of the axino. We find that constraints from astrophysical X-and gamma rays on the decay into photon and neutrino can set new bounds on some trilinear supersymmetric R-parity violating Yukawa couplings. In some corners of the parameter space the decays of a relic axino can also explain a putative 3.5 keV line.

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“…In RPV SUSY, lepton number can be violated at tree level in interactions between fermions and sfermions, and theν τ may be the LSP [7]. For the resonantν τ signal, the following trilinear RPV part of the superpotential is considered:…”

Section: Introductionmentioning

confidence: 99%

“…In RPV SUSY, lepton number can be violated at tree level in interactions between fermions and sfermions, and the may be the LSP [ 7 ]. For the resonant signal, the following trilinear RPV part of the superpotential is considered: , where i , j , and are generation indices, L and Q are the doublet superfields of the leptons and quarks, and and are the singlet superfields of the charged leptons and down-like quarks.…”

Section: Introductionmentioning

confidence: 99%

“…The analysis is based on data with an integrated luminosity of 19.7 fb −1 collected in proton-proton (pp) collisions at √ s = 8 TeV with the CMS detector at the CERN LHC [1]. The results are interpreted in terms of three theoretically predicted objects: a τ sneutrino (ν τ ) lightest supersymmetric particle (LSP) in R-parity violating (RPV) supersymmetry (SUSY) [2], interfering LFV Z and γ bosons [3], and quantum black holes (QBHs) [4][5][6].In RPV SUSY, lepton number can be violated at tree level in interactions between fermions and sfermions, and theν τ may be the LSP [7]. For the resonantν τ signal, the following trilinear RPV part of the superpotential is considered:, where i, j, and k are generation indices, L and Q are the SU(2) L doublet superfields of the leptons and quarks, andĒ andD are the SU(2) L singlet superfields of the charged leptons and down-like quarks.…”

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Search for lepton flavour violating decays of heavy resonances and quantum black holes to an $$\mathrm {e}\mu $$ e μ pair in proton–proton collisions at $$\sqrt{s}=8~\text {TeV} $$ s = 8 TeV

Khachatryan¹,

Sirunyan²,

Tumasyan³

et al. 2016

Eur. Phys. J. C

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A search for narrow resonances decaying to an electron and a muon is presented. The mass spectrum is also investigated for non-resonant contributions from the production of quantum black holes (QBHs). The analysis is performed using data corresponding to an integrated luminosity of 19.7 collected in proton-proton collisions at a centre-of-mass energy of 8 with the CMS detector at the LHC. With no evidence for physics beyond the standard model in the invariant mass spectrum of selected pairs, upper limits are set at 95 confidence level on the product of cross section and branching fraction for signals arising in theories with charged lepton flavour violation. In the search for narrow resonances, the resonant production of a sneutrino in R-parity violating supersymmetry is considered. The sneutrino is excluded for masses below 1.28 for couplings , and below 2.30 for and . These are the most stringent limits to date from direct searches at high-energy colliders. In addition, the resonance searches are interpreted in terms of a model with heavy partners of the boson and the photon. In a framework of TeV-scale quantum gravity based on a renormalization of Newton’s constant, the search for non-resonant contributions to the mass spectrum excludes QBH production below a threshold mass of 1.99. In models that invoke extra dimensions, the bounds range from 2.36 for one extra dimension to 3.63 for six extra dimensions. This is the first search for QBHs decaying into the final state.

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Sneutrino as the lightest supersymmetric particle inB3minimal supergravity models and signals at the LHC

Cited by 13 publications

References 118 publications

Simplified supersymmetry with sneutrino LSP at 8 TeV LHC

Simplified supersymmetry with sneutrino LSP at 8 TeV LHC

Supersymmetric R -parity violating Dine-Fischler-Srednicki-Zhitnitsky axion model

Search for lepton flavour violating decays of heavy resonances and quantum black holes to an $$\mathrm {e}\mu $$ e μ pair in proton–proton collisions at $$\sqrt{s}=8~\text {TeV} $$ s = 8 TeV

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