Access Restriction

Author Andreas, Crivellin
Source Directory of Open Access Journals (DOAJ)
Content type Text
Publisher EDP Sciences
File Format PDF
Date Created 2016-05-02
Copyright Year ©2016
Language English
Subject Domain (in LCC) QC1-999
Subject Keyword Science ♦ Physics
Abstract While the LHC did not observe direct evidence for physics beyond the standard model, indirect hints for new physics were uncovered in the flavour sector in the decays B → K*µ+ µ−, B → Kµ+ µ−/B → Ke+e−, Bs → øµ+µ−, B → D(*) τv and h → τ±µ∓. Each observable deviates from the SM predictions at the 2 − 3σ level only, but combining all b → sµ+µ− data via a global fit, one finds 4 − 5 σ difference for NP compared to the SM and combining B → D* τv with B → Dτv one obtains 3:9 σ. While B → D(*) τv and h → τv can be naturally explained by an extended Higgs sector, the b → sµ+µ− anomalies point at a Z′ gauge boson. However, it is also possible to explain B → D(*) τv and b → sµ+ µ− simultaneously with leptoquarks while their effect in h → τ±µ∓ is far too small to account for current data. Combining a 2HDM with a gauged Lµ − Lτ symmetry allows for explaining the b → sµ+ µ− anomalies in combination with h → τ±µ∓, predicting interesting correlations with τ → 3µ. In the light of these deviations from the SM we also discuss the possibilities of observing lepton flavour violating B decays (e.g. B → K(*) τ±µ∓ and Bs → τ±µ∓).
ISSN 2100014X
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2016-01-01
e-ISSN 2100014X
Journal EPJ Web of Conferences
Volume Number 118
Starting Page 01007

Source: Directory of Open Access Journals (DOAJ)