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Revisiting R-parity violating interactions as an explanation of the B-physics anomalies


Trifinopoulos, Sokratis (2018). Revisiting R-parity violating interactions as an explanation of the B-physics anomalies. European Physical Journal C - Particles and Fields, 78(10):803.

Abstract

In the last few years, the ratios RD(∗) and of RK(∗) have reportedly exhibited significant deviations from the relevant standard model predictions, hinting towards a possible violation of Lepton Flavor Universality and a window to New Physics. We investigate to what extent the inclusion of R-parity violating couplings in the minimal supersymmetric standard model can provide a better fit to the anomalies simultaneously. We perform this analysis employing an approximate, non-abelian Gf=U(2)q×U(2)ℓ flavour symmetry, which features a natural explanation of the appropriate hierarchy of the R-parity violating couplings. We show that, under the requirement of a supersymmetric spectrum with much heavier left-handed doublet superpartners, our assumption favors a considerable enhancement in the tree-level charged-current B→D(∗)τν¯¯¯, while the the anomalies induced by b→sℓ+ℓ− receive up to an approximate 30% improvement. The consistency with all relevant low-energy constraints is assessed.

Abstract

In the last few years, the ratios RD(∗) and of RK(∗) have reportedly exhibited significant deviations from the relevant standard model predictions, hinting towards a possible violation of Lepton Flavor Universality and a window to New Physics. We investigate to what extent the inclusion of R-parity violating couplings in the minimal supersymmetric standard model can provide a better fit to the anomalies simultaneously. We perform this analysis employing an approximate, non-abelian Gf=U(2)q×U(2)ℓ flavour symmetry, which features a natural explanation of the appropriate hierarchy of the R-parity violating couplings. We show that, under the requirement of a supersymmetric spectrum with much heavier left-handed doublet superpartners, our assumption favors a considerable enhancement in the tree-level charged-current B→D(∗)τν¯¯¯, while the the anomalies induced by b→sℓ+ℓ− receive up to an approximate 30% improvement. The consistency with all relevant low-energy constraints is assessed.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Engineering (miscellaneous)
Physical Sciences > Physics and Astronomy (miscellaneous)
Uncontrolled Keywords:Physics and Astronomy (miscellaneous), Engineering (miscellaneous)
Language:English
Date:1 October 2018
Deposited On:20 Dec 2018 12:38
Last Modified:15 Apr 2020 22:04
Publisher:Springer
ISSN:1434-6044
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-018-6280-4

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