Rare decays at the LHCb experiment

Lanfranchi, G. (2015) Rare decays at the LHCb experiment. Il nuovo cimento C, 38 (1). pp. 1-7. ISSN 1826-9885

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Rare flavour-changing neutral-current (FCNC) decays of beauty and charm quarks, lepton flavour- and lepton-number–violating decays can provide a powerful probe for as yet unobserved virtual particles. Recent results on these topics from the LHCb experiment are reviewed. Particular attention is paid to the angular distribution of the B0 → K ∗0μ+μ− decay, where a measurement performed by LHCb shows a local discrepancy of 3.7 standard deviations with respect to the SM prediction. Using the decay B+ → K+π+π−γ, LHCb have also been able to demonstrate the polarisation of photons produced in b → s transitions. An update for the studies dedicated to decays τ+ → μ+μ−μ+ and B0(s)→ μ ± e ∓ and to the on-shell Majorana neutrinos coupling to muons in the B+ → π−μ+μ+ decay channel are also presented.

Item Type: Article
Uncontrolled Keywords: Decays of bottom mesons ; Decays of taus ; Decays of heavy neutrinos ; Leptonic, semileptonic, and radiative decays
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 27 May 2020 14:40
Last Modified: 27 May 2020 14:40
URI: http://eprints.bice.rm.cnr.it/id/eprint/18940

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