Addressing RD(*), RK(*), muon g2 and ANITA anomalies in a minimal R-parity violating supersymmetric framework

Wolfgang Altmannshofer (Department of Physic and Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, California 95064, USA) ; P.S. Bhupal Dev (Department of Physics and McDonnell Center for the Space Sciences, Washington University, St. Louis, Missouri 63130, USA) ; Amarjit Soni (Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA) ; Yicong Sui (Department of Physics and McDonnell Center for the Space Sciences, Washington University, St. Louis, Missouri 63130, USA)

We analyze the recent hints of lepton flavor universality violation in both charged-current and neutral-current rare decays of B mesons in an R-parity-violating supersymmetric scenario. Motivated by simplicity and minimality, we had earlier postulated the third-generation superpartners to be the lightest (calling the scenario “RPV3”) and explicitly showed that it preserves gauge coupling unification and of course has the usual attribute of naturally addressing the Higgs radiative stability. Here we show that both RD(*) and RK(*) flavor anomalies can be addressed in this RPV3 framework. Interestingly, this scenario may also be able to accommodate two other seemingly disparate anomalies, namely, the longstanding discrepancy in the muon (g2), as well as the recent anomalous upgoing ultrahigh-energy Antarctic Impulsive Transient Antenna events. Based on symmetry arguments, we consider three different benchmark points for the relevant RPV3 couplings and carve out the regions of parameter space where all (or some) of these anomalies can be simultaneously explained. We find it remarkable that such overlap regions exist, given the plethora of precision low-energy and high-energy experimental constraints on the minimal model parameter space. The third-generation superpartners needed in this theoretical construction are all in the 1–10 TeV range, accessible at the LHC and/or next-generation hadron colliders. We also discuss some testable predictions for the lepton-flavor-violating decays of the tau lepton and B mesons for the current and future B-physics experiments, such as LHCb and Belle II. Complementary tests of the flavor anomalies in the high-pT regime in collider experiments such as the LHC are also discussed.

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      "title": "Addressing <math><mrow><msub><mrow><mi>R</mi></mrow><mrow><mi>D</mi><mo>(</mo><mo>*</mo><mo>)</mo></mrow></msub></mrow></math>, <math><mrow><msub><mrow><mi>R</mi></mrow><mrow><mi>K</mi><mo>(</mo><mo>*</mo><mo>)</mo></mrow></msub></mrow></math>, muon <math><mi>g</mi><mo>\u2212</mo><mn>2</mn></math> and ANITA anomalies in a minimal <math><mi>R</mi></math>-parity violating supersymmetric framework"
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      "source": "APS", 
      "value": "We analyze the recent hints of lepton flavor universality violation in both charged-current and neutral-current rare decays of <math><mi>B</mi></math> mesons in an <math><mi>R</mi></math>-parity-violating supersymmetric scenario. Motivated by simplicity and minimality, we had earlier postulated the third-generation superpartners to be the lightest (calling the scenario \u201cRPV3\u201d) and explicitly showed that it preserves gauge coupling unification and of course has the usual attribute of naturally addressing the Higgs radiative stability. Here we show that both <math><msub><mi>R</mi><msup><mi>D</mi><mrow><mo>(</mo><mo>*</mo><mo>)</mo></mrow></msup></msub></math> and <math><msub><mi>R</mi><msup><mi>K</mi><mrow><mo>(</mo><mo>*</mo><mo>)</mo></mrow></msup></msub></math> flavor anomalies can be addressed in this RPV3 framework. Interestingly, this scenario may also be able to accommodate two other seemingly disparate anomalies, namely, the longstanding discrepancy in the muon (<math><mrow><mi>g</mi><mo>\u2212</mo><mn>2</mn></mrow></math>), as well as the recent anomalous upgoing ultrahigh-energy Antarctic Impulsive Transient Antenna events. Based on symmetry arguments, we consider three different benchmark points for the relevant RPV3 couplings and carve out the regions of parameter space where all (or some) of these anomalies can be simultaneously explained. We find it remarkable that such overlap regions exist, given the plethora of precision low-energy and high-energy experimental constraints on the minimal model parameter space. The third-generation superpartners needed in this theoretical construction are all in the 1\u201310 TeV range, accessible at the LHC and/or next-generation hadron colliders. We also discuss some testable predictions for the lepton-flavor-violating decays of the tau lepton and <math><mi>B</mi></math> mesons for the current and future <math><mi>B</mi></math>-physics experiments, such as LHCb and Belle II. Complementary tests of the flavor anomalies in the high-<math><msub><mi>p</mi><mi>T</mi></msub></math> regime in collider experiments such as the LHC are also discussed."
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Published on:
31 July 2020
Publisher:
APS
Published in:
Physical Review D , Volume 102 (2020)
Issue 1
DOI:
https://doi.org/10.1103/PhysRevD.102.015031
arXiv:
2002.12910
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

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