Search for lepton flavour universality violation in B+→K+ℓ+ℓ− decays at LHCb

Add to your list(s) Download to your calendar using vCal

• Paula Alvarez Cartelle (Imperial College)
• Tuesday 07 May 2019, 16:00-17:00
• Ryle Seminar Room (Rutherford 930) .

If you have a question about this talk, please contact William Fawcett.

Recent measurements of observables involving the flavour changing neutral current transition b→sμ+μ− have shown an interesting pattern of tensions with respect to the predictions of the Standard Model (SM). However, the interpretation of these results is limited by our present understanding of the hadronic uncertainties affecting these predictions. Given the lepton-flavour-universal nature of the SM, observables such as RK=BR(B+→K+μ+μ−)/BR(B+→K+e+e−), so-called Lepton Flavour Universality ratios, profit from large cancellation of the theory uncertainties and provide a very sensitive probe for physics beyond the SM. The previous measurement of the ratio RK performed by the LHCb collaboration, using Run 1 data, found a value compatible with the SM expectation at the 2.6σ level. In this seminar, a new measurement of RK at the LHCb experiment will be presented. The new measurement reanalyses the data recorded by LHCb during Run 1, and adds data collected during 2015 and 2016. The total dataset is double the size of that previously analysed.

This talk is part of the Cavendish HEP Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Cavendish HEP Seminars
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Ryle Seminar Room (Rutherford 930)
• School of Physical Sciences
• Thin Film Magnetic Talks
• few29

Note that ex-directory lists are not shown.