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Your search keyword '"LHC-B"' showing total 3 results
Start Over Descriptor "LHC-B" Journal physics letters b
3 results on '"LHC-B"'

1. Sterile neutrino searches via displaced vertices at LHCb

Author

Stefan Antusch, Eros Cazzato, and Oliver Fischer

Subjects
LHC-B, New physics, Displaced vertex, Neutrino, Sterile, Particle-long-lived, Physics, QC1-999
Abstract

We explore the sensitivity of displaced vertex searches at LHCb for testing sterile neutrino extensions of the Standard Model towards explaining the observed neutrino masses. We derive estimates for the constraints on sterile neutrino parameters from a recently published displaced vertex search at LHCb based on run 1 data. They yield the currently most stringent limit on active–sterile neutrino mixing in the sterile neutrino mass range between 4.5 GeV and 10 GeV. Furthermore, we present forecasts for the sensitivities that could be obtained from the run 2 data and also for the high-luminosity phase of the LHC.

Published
2017
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2. Sterile neutrino searches via displaced vertices at LHCb.

Author

Antusch, Stefan, Cazzato, Eros, and Fischer, Oliver

Subjects
*NEUTRINO oscillation, *STANDARD model (Nuclear physics), *STERILE neutrinos, *VERTEX detectors, *NEUTRINOS
Abstract

We explore the sensitivity of displaced vertex searches at LHCb for testing sterile neutrino extensions of the Standard Model towards explaining the observed neutrino masses. We derive estimates for the constraints on sterile neutrino parameters from a recently published displaced vertex search at LHCb based on run 1 data. They yield the currently most stringent limit on active–sterile neutrino mixing in the sterile neutrino mass range between 4.5 GeV and 10 GeV. Furthermore, we present forecasts for the sensitivities that could be obtained from the run 2 data and also for the high-luminosity phase of the LHC. [ABSTRACT FROM AUTHOR]

Published
2017
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3. More indications for lepton nonuniversality in b → sℓ+ℓ−

Author

T. Hurth, F. Mahmoudi, D. Martínez Santos, S. Neshatpour, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
operator: Wilson, Nuclear and High Energy Physics, B: semileptonic decay, new physics, 010308 nuclear & particles physics, effective operator, Physics, QC1-999, branching ratio: ratio, LHC-B, 01 natural sciences, effective field theory, statistical analysis, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, lepton: universality: violation, B: branching ratio, numerical calculations, 010306 general physics
Abstract

International audience; Recently the LHCb collaboration has confirmed the evidence for lepton flavour nonuniversality at the 3.1σ level via an updated measurement of RK. In this work we analyse this evidence within a model-independent approach. We make projections for future measurements which indicate that LHCb will be in the position to discover lepton nonuniversality with the Run 3 data in a single observable. We analyse other ratios based on our analysis of the present measurements of the ratios RK(⁎) and analyse if they are able to differentiate between various new physics options within the effective field theory at present or in the near future. We also compare the present deviations in the ratios with NP indications in the angular observables of exclusive b→sℓℓ transitions. Finally, we update our global analysis considering all b→sℓℓ observables altogether, including a 20-parameter fit in connection of a Wilks' test.

Published
2022
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