TY - JOUR
T1 - Relativistic corrections to Higgs boson decays to quarkonia
AU - Bodwin, Geoffrey T.
AU - Chung, Hee Sok
AU - Ee, June Haak
AU - Lee, Jungil
AU - Petriello, Frank
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/12/16
Y1 - 2014/12/16
N2 - We improve the theoretical predictions for the decays of the Higgs boson to an S-wave vector quarkonium plus a photon by calculating the relativistic correction of order v2, where v is the heavy-quark velocity in the quarkonium rest frame. Our numerical results are given for the J/ψ and (nS) channels, with n=1, 2, 3. The numerical results include a previously calculated correction of order αs and summations, to all orders in αs, of leading logarithms of mH2/mQ2, where mH is the Higgs-boson mass and mQ is the heavy-quark mass. These QCD corrections apply to the contribution of leading order in v and to part of the order-v2 correction. For the remainder of the order-v2 correction, we sum leading logarithms of mH/mQ through order αs2. These refinements reduce the theoretical uncertainties in the direct-production amplitudes for H→J/ψ+γ and H→(1S)+γ by approximately a factor of 3 and open the door to improved determinations at the LHC of the Higgs-boson Yukawa couplings to the charm and bottom quarks.
AB - We improve the theoretical predictions for the decays of the Higgs boson to an S-wave vector quarkonium plus a photon by calculating the relativistic correction of order v2, where v is the heavy-quark velocity in the quarkonium rest frame. Our numerical results are given for the J/ψ and (nS) channels, with n=1, 2, 3. The numerical results include a previously calculated correction of order αs and summations, to all orders in αs, of leading logarithms of mH2/mQ2, where mH is the Higgs-boson mass and mQ is the heavy-quark mass. These QCD corrections apply to the contribution of leading order in v and to part of the order-v2 correction. For the remainder of the order-v2 correction, we sum leading logarithms of mH/mQ through order αs2. These refinements reduce the theoretical uncertainties in the direct-production amplitudes for H→J/ψ+γ and H→(1S)+γ by approximately a factor of 3 and open the door to improved determinations at the LHC of the Higgs-boson Yukawa couplings to the charm and bottom quarks.
UR - http://www.scopus.com/inward/record.url?scp=84918797340&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84918797340&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.90.113010
DO - 10.1103/PhysRevD.90.113010
M3 - Article
AN - SCOPUS:84918797340
SN - 1550-7998
VL - 90
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
M1 - 113010
ER -