Abstract
We propose a gauged U(1)H horizontal symmetry around a TeV scale that is a subgroup of a SU(3)H horizontal gauge symmetry broken at O(1014)GeV. The breaking generates right-handed Majorana neutrino masses through a SU(3)H sextet scalar. A particular Majorana right-handed neutrino mass matrix explicitly determines the remnant U(1)H at low energy which only couples to b-s and μ-τ in the gauge eigenstate. The dangerous K-K̄, D-D̄ mixing and Bs→μ+μ - are kept to be safe because the relevant couplings are suppressed through high powers of small mixing angles in the fermion rotation matrix. Our analysis which applies to the general case shows that the Tevatron di-muon anomaly can be explained through the Bs and Bd mixing while keeping all the other experimental constraints within 90% C.L. For the B meson decay, the Bs→μ⊃±τ⊃ is the leading leptonic decay channel which is several orders of magnitude below current experimental bounds.
| Original language | English |
|---|---|
| Article number | 114003 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 82 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2010 Dec 2 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
Cite this
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TeV scale horizontal gauge symmetry and its implications in B physics. / Park, Seong Chan; Shu, Jing; Wang, Kai; Yanagida, Tsutomu T.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 82, No. 11, 114003, 02.12.2010.Research output: Contribution to journal › Article
TY - JOUR
T1 - TeV scale horizontal gauge symmetry and its implications in B physics
AU - Park, Seong Chan
AU - Shu, Jing
AU - Wang, Kai
AU - Yanagida, Tsutomu T.
PY - 2010/12/2
Y1 - 2010/12/2
N2 - We propose a gauged U(1)H horizontal symmetry around a TeV scale that is a subgroup of a SU(3)H horizontal gauge symmetry broken at O(1014)GeV. The breaking generates right-handed Majorana neutrino masses through a SU(3)H sextet scalar. A particular Majorana right-handed neutrino mass matrix explicitly determines the remnant U(1)H at low energy which only couples to b-s and μ-τ in the gauge eigenstate. The dangerous K-K̄, D-D̄ mixing and Bs→μ+μ - are kept to be safe because the relevant couplings are suppressed through high powers of small mixing angles in the fermion rotation matrix. Our analysis which applies to the general case shows that the Tevatron di-muon anomaly can be explained through the Bs and Bd mixing while keeping all the other experimental constraints within 90% C.L. For the B meson decay, the Bs→μ⊃±τ⊃ is the leading leptonic decay channel which is several orders of magnitude below current experimental bounds.
AB - We propose a gauged U(1)H horizontal symmetry around a TeV scale that is a subgroup of a SU(3)H horizontal gauge symmetry broken at O(1014)GeV. The breaking generates right-handed Majorana neutrino masses through a SU(3)H sextet scalar. A particular Majorana right-handed neutrino mass matrix explicitly determines the remnant U(1)H at low energy which only couples to b-s and μ-τ in the gauge eigenstate. The dangerous K-K̄, D-D̄ mixing and Bs→μ+μ - are kept to be safe because the relevant couplings are suppressed through high powers of small mixing angles in the fermion rotation matrix. Our analysis which applies to the general case shows that the Tevatron di-muon anomaly can be explained through the Bs and Bd mixing while keeping all the other experimental constraints within 90% C.L. For the B meson decay, the Bs→μ⊃±τ⊃ is the leading leptonic decay channel which is several orders of magnitude below current experimental bounds.
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U2 - 10.1103/PhysRevD.82.114003
DO - 10.1103/PhysRevD.82.114003
M3 - Article
AN - SCOPUS:78651319616
VL - 82
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 11
M1 - 114003
ER -