TY - JOUR
T1 - Effective field theory for nonstandard top quark couplings
AU - Greiner, Nicolas
AU - Willenbrock, Scott
AU - Zhang, Cen
N1 - Funding Information:
We are grateful for correspondence with J. Drobnak and J. Serra. This material is based upon work supported in part by the U.S. Department of Energy under contract No. DE-FG02-91ER40677 and the National Science Foundation under Grant No. 0757889 .
PY - 2011/10/13
Y1 - 2011/10/13
N2 - We present an effective-field-theory calculation of the effect of a dimension-six operator involving the top quark on precision electroweak data via a top-quark loop. We demonstrate the renormalizability, in the modern sense, of the effective field theory. We use the oblique parameter Û to bound the coefficient of the operator, and compare with the bound derived from top-quark decay.
AB - We present an effective-field-theory calculation of the effect of a dimension-six operator involving the top quark on precision electroweak data via a top-quark loop. We demonstrate the renormalizability, in the modern sense, of the effective field theory. We use the oblique parameter Û to bound the coefficient of the operator, and compare with the bound derived from top-quark decay.
UR - http://www.scopus.com/inward/record.url?scp=80053130594&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053130594&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2011.09.026
DO - 10.1016/j.physletb.2011.09.026
M3 - Article
AN - SCOPUS:80053130594
SN - 0370-2693
VL - 704
SP - 218
EP - 222
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3
ER -