scholarly journals Effects ofR-parity violation in the minimal supersymmetric standard model on dilepton pair production at the CERN LHC

2002 ◽  
Vol 65 (11) ◽  
Author(s):  
Yin Jun ◽  
Ma Wen-Gan ◽  
Wan Lang-Hui ◽  
Zhang Ren-You
Keyword(s):  
Standard Model ◽  
Pair Production ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parity Violation

scholarly journals FERMION-BOSON LOOPS WITH BILINEAR R-PARITY VIOLATION LEADING TO MAJORANA NEUTRINO MASS AND MAGNETIC MOMENTS

2008 ◽  
Vol 17 (01) ◽  
pp. 276-281 ◽  
Author(s):  
MAREK GÓŹDŹ ◽  
WIESŁAW A. KAMIŃSKI
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parity Violation ◽  
Magnetic Moments ◽  
Majorana Neutrino ◽  
Feynman Diagrams ◽  
Neutrino Masses ◽  
Analytic Expressions ◽  
Majorana Neutrino Mass

We present analytic expressions corresponding to a set of one loop Feynman diagrams, built within R-parity violating (RpV) minimal supersymmetric standard model (MSSM). Diagrams involve both bilinear and trilinear RpV couplings and represent Majorana neutrino masses and magnetic moments.

R -Parity Violation Effects on b̃ 1 → b χ̃ 0 1 in Minimal Supersymmetric Standard Model

2005 ◽  
Vol 43 (2) ◽  
pp. 257-267
Author(s):  
Zhang Ren-You ◽  
Ma Wen-Gan ◽  
Jiang Yi ◽  
Hou Hong-Sheng ◽  
Sun Yan-Bin
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parity Violation

scholarly journals Interpreting 750 GeV diphoton excess with R-parity violating supersymmetry

2017 ◽  
Vol 32 (02n03) ◽  
pp. 1750014
Author(s):  
Ran Ding ◽  
Li Huang ◽  
Tianjun Li ◽  
Bin Zhu
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Parameter Space ◽  
Parity Violation ◽  
Branching Ratio ◽  
Mass Range ◽  
Signal Rate ◽  
8 Tev ◽  
The Masses

We propose a supersymmetric explanation of the diphoton excess in the Minimal Supersymmetric Standard Model (MSSM) with the leptonic R-parity violation. In our model, sneutrino serves as the 750 GeV resonance and produced through quark–antiquark annihilation. With introducing appropriate trilinear soft parameters, we show that the diphoton branching ratio is significantly enhanced compared with the conventional MSSM. For current dijet and W-pair LHC constraints, we can successfully fit the observed diphoton signal rate in sizeable parameter regions, the resulting parameter space strongly favor the masses of light smuon and stau within the range from 375–500 GeV, which depends on the choice of electroweakino masses and soft trilinear terms. While after taking into account the compatibility of diphoton excess between the 8 TeV and 13 TeV LHC, only the coupling involved with the second generation quarks is survived. In this case, the corresponding parameter space favors a narrow mass range of smuon and stau with [Formula: see text]. Even if the 750 GeV diphoton excesses were not confirmed by the ATLAS and CMS experiments, we point out that our proposal can still be used to explain the current and future tentative diphoton excesses.

scholarly journals Measuring neutrino dynamics in NMSSM with a right-handed sneutrino LSP at the ILC

2022 ◽  
Vol 2022 (1) ◽  
Author(s):  
Yi Liu ◽  
Stefano Moretti ◽  
Harri Waltari
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Pair Production ◽  
Supersymmetric Standard Model ◽  
Minimal Supersymmetric Standard Model ◽  
Transverse Energy ◽  
Extended Model ◽  
Missing Transverse Energy ◽  
Yukawa Couplings ◽  
Neutrino Sector

Abstract We study the possibility of measuring neutrino Yukawa couplings in the Next-to-Minimal Supersymmetric Standard Model with right-handed neutrinos (NMSSMr) when the lightest right-handed sneutrino is the Dark Matter (DM) candidate, by exploiting a ‘dijet + dilepton + Missing Transverse Energy’ (MET or "Image missing") signature. We show that, contrary to the miminal realisation of Supersymmetry (SUSY), the MSSM, wherein the DM candidate is typically a much heavier (fermionic) neutralino state, this extended model of SUSY offers one with a much lighter (bosonic) state as DM that can then be produced at the next generation of e+e− colliders with energies up to 500 GeV or so. The ensuing signal, energing from chargino pair production and subsequent decay, is extremely pure so it also affords one with the possibility of extracting the Yukawa parameters of the (s)neutrino sector. Altogether, our results serve the purpose of motivating searches for light DM signals at such machines, where the DM candidate can have a mass around the Electro-Weak (EW) scale.

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