Mixed QCD-EW corrections for Higgs leptonic decay via HW$^{+}$W$^{−}$ vertex - INSPIRE

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Mixed QCD-EW corrections for Higgs leptonic decay via HW $^{+}$ W $^{−}$ vertex

Chichuan Ma
(
- Peking U., SKLNPT
)
,
Yuxuan Wang
(
- Peking U., SKLNPT
)
,
Xiaofeng Xu
(
- U. Bern (main)
)
,
Li Lin Yang
(
- Zhejiang U., Inst. Mod. Phys. and
- Zhejiang U.
)
,
Bin Zhou
(
- Peking U., SKLNPT
)

May 13, 2021

19 pages

Published in:

JHEP 09 (2021) 114

Published: Sep 17, 2021

e-Print:

2105.06316 [hep-ph]

DOI:

10.1007/JHEP09(2021)114

View in:

ADS Abstract Service

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Abstract: (Springer)

We consider the two-loop corrections to the HW

^{+}

W

^{−}

vertex at order αα

_{s}

. We construct a canonical basis for the two-loop integrals using the Baikov representation and the intersection theory. By solving the ϵ-form differential equations, we obtain fully analytic expressions for the master integrals in terms of multiple polylogarithms, which allow fast and accurate numeric evaluation for arbitrary configurations of external momenta. We apply our analytic results to the decay process H → ν

_{e}

eW, and study both the integrated and differential decay rates. Our results can also be applied to the Higgs production process via W boson fusion.

Note:

18 pages, 3 figures, 2 tables; version accepted for publication in JHEP

NLO Computations
quantum chromodynamics: correction
electroweak interaction: correction
higher-order: 2
momentum: external
differential equations
master integral
W W: fusion
decay rate
Higgs particle: leptonic decay

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