New-physics signals of a model with a vector-singlet up-type quark - INSPIRE

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New-physics signals of a model with a vector-singlet up-type quark

Ashutosh Kumar Alok
(
- IIT, Jodhpur
)
,
Subhashish Banerjee
(
- IIT, Jodhpur
)
,
Dinesh Kumar
(
- Indian Inst. Tech., Mumbai
)
,
S. Uma Sankar
(
- Indian Inst. Tech., Mumbai
)
,
David London
(
- Montreal U.
)

Apr 2, 2015

16 pages

Published in:

Phys.Rev.D 92 (2015) 013002

Published: Jul 6, 2015

e-Print:

1504.00517 [hep-ph]

DOI:

10.1103/PhysRevD.92.013002

Report number:

UDEM-GPP-TH-15-241

View in:

ADS Abstract Service

reference search55 citations

Citations per year

Abstract: (APS)

The VuQ model involves the addition of a vector isosinglet up-type quark to the standard model. In this model the full Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix is 4×3. Using present flavor-physics data, we perform a fit to this full CKM matrix, looking for signals of new physics (NP). We find that the VuQ model is very strongly constrained. There are no hints of NP in the CKM matrix, and any VuQ contributions to loop-level flavor-changing b→s, b→d and s→d transitions are very small. There can be significant enhancements of the branching ratios of the flavor-changing decays t→uZ and t→cZ, but these are still below present detection levels.

Note:

30 pages, no figures. arXiv admin note: text overlap with arXiv:1402.1023

12.15.Ji
12.15.Hh
new physics: signature
isospin: singlet
quark: vector particle
quark: vector: search for
quark: singlet
quark: decay
decay: flavor changing
quark: flavor: violation

References(112)

Figures(0)

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