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Simultaneous decoupling of bottom and charm quarks

Andrey G. Grozin
(
- KIT, Karlsruhe
)
,
Maik Hoeschele
(
- KIT, Karlsruhe
)
,
Jens Hoff
(
- KIT, Karlsruhe
)
,
Matthias Steinhauser
(
- KIT, Karlsruhe
)
,
Maik Hoschele
(
- KIT, Karlsruhe
)

Jul, 2011

30 pages

Published in:

JHEP 09 (2011) 066

e-Print:

1107.5970 [hep-ph]

DOI:

10.1007/JHEP09(2011)066

Report number:

SFB-CPP-11-32,
TTP11-07

View in:

ADS Abstract Service

reference search61 citations

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Abstract: (arXiv)

We compute the decoupling relations for the strong coupling, the light quark masses, the gauge-fixing parameter, and the light fields in QCD with heavy charm and bottom quarks to three-loop accuracy taking into account the exact dependence on

m_c/m_b

. The application of a low-energy theorem allows the extraction of the three-loop effective Higgs-gluon coupling valid for extensions of the Standard Model with additional heavy quarks from the decoupling constant of

\alpha_s

.

Note:

30 pages

QCD Phenomenology
bottom: decoupling
charm: decoupling
quark: mass
higher-order: 3
quantum chromodynamics
low-energy theorem
gauge fixing
heavy quark
strong interaction: coupling constant

References(32)

Figures(0)

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(
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(
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)
,
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(
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)

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