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Tests of Lepton Flavour Universality at LHCb


Müller, Katharina (2019). Tests of Lepton Flavour Universality at LHCb. Journal of Physics : Conference Series, 1271:012009.

Abstract

In the Standard Model of particle physics the three charged leptons are identicalcopies of each other, apart from mass differences, and the electroweak coupling of the gaugebosons to leptons is independent of the lepton flavour. This prediction is called lepton flavouruniversality (LFU) and is well tested. In tree level decays, any violation of LFU would be a clearsign of physics beyond the Standard Model. Experimental tests of LFU in semileptonic decaysofb-hadrons or rarebdecays are highly sensitive to New Physics particles which preferentiallycouple to the 2nd and 3rd generations of leptons. Recent results from LHCb on lepton flavouruniversality inb→c`νtransitions and rareb→s``decays are discussed. The results are basedon 3 fb−1of proton-proton collisions collected at centre of mass energies√s= 7 TeV and 8 TeV.

Abstract

In the Standard Model of particle physics the three charged leptons are identicalcopies of each other, apart from mass differences, and the electroweak coupling of the gaugebosons to leptons is independent of the lepton flavour. This prediction is called lepton flavouruniversality (LFU) and is well tested. In tree level decays, any violation of LFU would be a clearsign of physics beyond the Standard Model. Experimental tests of LFU in semileptonic decaysofb-hadrons or rarebdecays are highly sensitive to New Physics particles which preferentiallycouple to the 2nd and 3rd generations of leptons. Recent results from LHCb on lepton flavouruniversality inb→c`νtransitions and rareb→s``decays are discussed. The results are basedon 3 fb−1of proton-proton collisions collected at centre of mass energies√s= 7 TeV and 8 TeV.

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Additional indexing

Item Type:Journal Article, not_refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Uncontrolled Keywords:General Physics and Astronomy
Language:English
Date:1 July 2019
Deposited On:18 Dec 2019 16:16
Last Modified:18 Dec 2019 16:19
Publisher:IOP Publishing
ISSN:1742-6588
OA Status:Green
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1088/1742-6596/1271/1/012009

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