Addressing the LHC flavor anomalies with horizontal gauge symmetries - INSPIRE

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Addressing the LHC flavor anomalies with horizontal gauge symmetries

Andreas Crivellin
(
- CERN
)
,
Giancarlo D'Ambrosio
(
- CERN and
- INFN, Naples
)
,
Julian Heeck
(
- Brussels U.
)

Mar 11, 2015

15 pages

Published in:

Phys.Rev.D 91 (2015) 7, 075006

Published: Apr 9, 2015

e-Print:

1503.03477 [hep-ph]

DOI:

10.1103/PhysRevD.91.075006

Report number:

CERN-PH-TH-2015-046,
ULB-TH-15-03

View in:

reference search354 citations

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Abstract: (APS)

We study the impact of an additional U(1)′ gauge symmetry with flavor-dependent charges for quarks and leptons on the LHC flavor anomalies observed in B→K*μ+μ-, R(K)=B→Kμ+μ-/B→Ke+e-, and h→μτ. In its minimal version with two scalar doublets, the resulting model naturally explains the deviations from the Standard Model observed in B→K*μ+μ- and R(K). The CMS access in h→μτ can be explained by introducing a third scalar doublet, which gives rise to a prediction for τ→3μ. We investigate constraints from flavor observables and direct LHC searches for pp→Z′→μ+μ-. Our model successfully generates the measured fermion-mixing matrices and does not require vectorlike fermions, unlike previous attempts to explain these anomalies.

Note:

14 pages, 6 figures. Added references; matches published version

12.60.Cn
11.30.Hv
12.60.Fr
13.25.Hw
horizontal symmetry
symmetry: gauge
symmetry: U(1)
Z': production
Z': signature
Z': decay

References(101)

Figures(7)

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