Limits on 
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-parity-violating couplings from Drell-Yan processes at the LHC

Bansal, Saurabh; Delgado, A.; Kolda, Christopher; Quirós, M.

doi:10.1103/physrevd.99.093008

Cited by 11 publications

(17 citation statements)

References 25 publications

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“…where heref =b,τ , Nb c = 3, Nτ c = 1, m 2 b = mb 1 · mb 2 and m 2 τ = mτ 2 · mτ 3 and it is understood that mτ 2 and mτ 3 are the masses of the two lightest slepton states (τ 1 being the massless Goldstone boson). space is given in [46] and bounds on the TRPV couplings can be found in [60,105].…”

Section: Bilinear Rpv -Numerical Resultsmentioning

confidence: 99%

R -parity violating supersymmetry and the 125 GeV Higgs boson signals

Cohen¹,

Bar‐Shalom²,

Eilam³

et al. 2019

Phys. Rev. D

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We study the impact of R-parity violating Supersymmetry (RPV SUSY) on the 125 GeV Higgs production and decay modes at the LHC. We assume a heavy SUSY spectrum with multi-TeV squarks and SU(2) scalar singlets as well as the decoupling limit in the SUSY Higgs sector. In this case the lightest CP-even Higgs is SM-like when R-parity is conserved. In contrast, we show that when R-parity violating interactions are added to the SUSY framework, significant deviations may occur in some production and decay channels of the 125 GeV Higgs-like state. Indeed, we assume a single-flavor (mostly third generation) Bilinear RPV (BRPV) interactions, which generate Higgs-sneutrino mixing, lepton-chargino mixing and neutrino-neutralino mixing, and find that notable deviations of O(20−30%) may be expected in the Higgs signal strength observables in some channels, e.g., in pp → h → µ + µ − , τ + τ − . Moreover, we find that new and detectable signals associated with BRPV Higgs decays to gauginos, h → ν τχ 0 2 and h → τ ± χ ∓ 2 , may also arise in this scenario. These decays yield a typical signature of h → τ ± ∓ + E T ( = e, µ, τ ) that can be much larger than in the SM, and may also be accompanied by an O(20 − 30%) enhancement in the di-photon signal pp → h → γγ. We also examine potential interesting signals of Trilinear R-parity violation (TRPV) interactions in the production and decays of the Higgs-sneutrino BRPV mixed state (assuming it is the 125 GeV scalar) and show that, in this case also, large deviations up to O(100%) are expected in e.g., pp → h → µ + µ − , τ + τ − , which are sensitive to the BRPV×TRPV coupling product.1 The CP-odd scalar mass matrix, m 2 O , has a massless state which corresponds to the Goldstone boson. 2 We note that too large values of δB may drive (depending on the other free-parameters in the Higgs sector) the lightest mass-squared eigenstates of both the CP-even and CP-odd mass matrices to non-physical negative values. We will thus demand non-negative mass-squared physical eigenvalues for the CP-even and CP-odd physical states by bounding δB accordingly.

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Section: Bilinear Rpv -Numerical Resultsmentioning

confidence: 99%

R -parity violating supersymmetry and the 125 GeV Higgs boson signals

Cohen¹,

Bar‐Shalom²,

Eilam³

et al. 2019

Phys. Rev. D

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“…λ 232 < 0.66 mf 1 TeV + 0.42 (18) replace the bounds from DY data in Ref. [2] as the strongest currently available bounds on these two couplings.…”

Section: Electroweak Constraintsmentioning

confidence: 95%

“…One may expect that the effect of one-loop diagrams with O( TeV) sfermion masses would be negligible at the Z-pole. But it has long been known (e.g., [16][17][18]) that the contribution of these diagrams with t-quarks in the loop can be fairly large. This is the result of helicity flips on the t-quark lines.…”

Section: Electroweak Constraintsmentioning

confidence: 99%

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Constraining R -parity-violating couplings in τ -processes at the LHC and in electroweak precision measurements

et al. 2019

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We find new limits on the λ 3jk R-parity violating (RPV) couplings of the minimal supersymmetric standard model, using Drell-Yan differential cross sections at the LHC and electroweak precision measurements from LEP and SLC. Specifically, limits on six out of the nine λ 3jk -couplings, with j = 1 or 2, are obtained using Drell-Yan data, with the remaining three (for j = 3) bounded by precision electroweak data. We also update the limits on all λ ijk -couplings using electroweak data and find new bounds on λ 132 and λ 232 that are stronger than obtained elsewhere. A table of all current bounds on λ ijk is given in an appendix.

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“…A simple way to preserve the Higgs naturalness by evading the current experimental constraints is by allowing R-parity Violation (RPV) [11] in the production and decays of superpartners at the LHC. Apart from significantly lowering the collider bounds on the SUSY spectrum [12][13][14][15][16][17][18][19][20][21], RPV SUSY implies the violation of baryon and/or lepton numbers, which has important phenomenological consequences [11].…”

Section: Introductionmentioning

confidence: 99%

Signatures of Supersymmetry in Neutrino Telescopes

Dev¹

2020

Probing Particle Physics With Neutrino Telescopes

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We review the prospects of probing R-parity violating Supersymmetry (RPV SUSY) at neutrino telescopes using some of the highest energy particles given to us by Nature. The presence of RPV interactions involving ultra-high energy neutrinos with Earth-matter can lead to resonant production of TeV-scale SUSY partners of the SM quarks and leptons (squarks and sleptons), thereby giving rise to potentially anomalous behavior in the event spectrum observed by largevolume neutrino detectors, such as IceCube, as well as balloon-borne cosmic ray experiments, such as ANITA. Using the ultra-high energy neutrino events observed recently at IceCube, with the fact that for a given power-law flux of astrophysical neutrinos, there is no statistically significant deviation in the current data from the Standard Model expectations, we derive robust upper limits on the RPV couplings as a function of the resonantly-produced squark mass, independent of the other unknown model parameters, as long as the squarks decay dominantly to two-body final states involving leptons and quarks through the RPV couplings. Also, we discuss RPV SUSY interpretations of the recent anomalous, upward-going EeV air showers observed at ANITA, in terms of long-lived charged or neutral next-to-lightest SUSY particles.

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Limits on R -parity-violating couplings from Drell-Yan processes at the LHC

Cited by 11 publications

References 25 publications

R -parity violating supersymmetry and the 125 GeV Higgs boson signals

R -parity violating supersymmetry and the 125 GeV Higgs boson signals

Constraining R -parity-violating couplings in τ -processes at the LHC and in electroweak precision measurements

Signatures of Supersymmetry in Neutrino Telescopes

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