Fetching the paper…

Reading the bibliography…

New physics in t-> b W decay at next-to-leading order in QCD · Around

2010

New physics in t-> b W decay at next-to-leading order in QCD

Drobnak, Jure, Fajfer, Svjetlana, Kamenik, Jernej F.

Original
PDF
Post on X

Understand

We consider contributions of non-standard tbW effective operators to the decay of an unpolarized top quark into a bottom quark and a W gauge boson at next-to-leading order in QCD.

We find that the dipole operator O_{LR} contribution to the transverse-plus W helicity fraction F_+ is significantly enhanced compared to the leading order result at non-vanishing bottom quark mass.
Nonetheless, presently the most sensitive observable to direct O_{LR} contributions is the longitudinal W helicity fraction F_L.
In particular, the most recent CDF measurement of F_L already provides the most stringent upper bound on O_{LR} contributions, even when compared with indirect bounds from the rare decay B -> X_s gamma.

Built on

S. A. Larin, Phys. Lett. B 303
1993
Earlier work this paper cites.
M. Fischer, S. Groote, J. G. Körner and M. C. Mauser, Phys. Rev. D 63
2001
Earlier work this paper cites.
M. Fischer, S. Groote, J. G. Körner and M. C. Mauser, Phys. Rev. D 65
2002
Earlier work this paper cites.
H. S. Do, S. Groote, J. G. Körner and M. C. Mauser, Phys. Rev. D 67
2003
Earlier work this paper cites.
W. Bernreuther, M. Fuecker and Y. Umeda, Phys. Lett. B 582
2004
Earlier work this paper cites.

Similar

J. A. Aguilar-Saavedra, J. Carvalho, N. F. Castro, F. Veloso and A. Onofre, Eur. Phys. J. C 50
2007
Cited alongside, same era.
J. A. Aguilar-Saavedra, J. Carvalho, N. F. Castro, A. Onofre and F. Veloso, Eur. Phys. J. C 53
Original
2008
Cited alongside, same era.
B. Grzadkowski and M. Misiak, Phys. Rev. D 78
Original
2008
Cited alongside, same era.
J. A. Aguilar-Saavedra, Nucl. Phys. B 812
Original
2009
Cited alongside, same era.
C. Zhang and S. Willenbrock, arXiv:1008.3155 [hep-ph]; arXiv:1008.3869 [hep-ph]
Original
Cited in the paper.

Then

T. Aaltonen et al
Original
2010
Closest in time.
A. Czarnecki, J. G. Körner and J. H. Piclum, Phys. Rev. D 81
Original
2010
Closest in time.
J. Drobnak, S. Fajfer and J. F. Kamenik, Phys. Rev. Lett. 104
Original
2010
Closest in time.
J. Drobnak, S. Fajfer and J. F. Kamenik, Phys. Rev. D 82
Original
2010
Closest in time.

Beyond the bibliography

alphaXiv searches the wider corpus for related work and actual follow-ups.

Open on alphaXiv

alphaXiv is searching for related work…