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Scale setting in top quark decays

Publication ,  Journal Article
Mehen, T
Published in: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
August 8, 1996

We compute the O(β0α2s) QCD corrections to the Standard Model decay t → W+ b as well as the non standard decay t → H+ b. We then use our results to compute the BLM scale for these decays, and study the dependence of the BLM scale on the mass of the boson in the decay. We find that the BLM procedure gives extremely small scales when top decays into heavy bosons. When we try to improve the BLM scale by reexpressing rates as a functions of the top quark running mass, we find the BLM scale exhibits unnatural dependence on the boson mass, casting doubts on the applicability of the BLM procedure to these processes.

Duke Scholars

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Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

August 8, 1996

Volume

382

Issue

3

Start / End Page

267 / 272

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics
 

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Mehen, T. (1996). Scale setting in top quark decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 382(3), 267–272. https://doi.org/10.1016/0370-2693(96)00681-8
Mehen, T. “Scale setting in top quark decays.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 382, no. 3 (August 8, 1996): 267–72. https://doi.org/10.1016/0370-2693(96)00681-8.
Mehen T. Scale setting in top quark decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 1996 Aug 8;382(3):267–72.
Mehen, T. “Scale setting in top quark decays.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 382, no. 3, Aug. 1996, pp. 267–72. Scopus, doi:10.1016/0370-2693(96)00681-8.
Mehen T. Scale setting in top quark decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 1996 Aug 8;382(3):267–272.
Journal cover image

Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

August 8, 1996

Volume

382

Issue

3

Start / End Page

267 / 272

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics