New approach to the resummation of logarithms in Higgs-boson decays to a vector quarkonium plus a photon
DC Field | Value | Language |
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dc.contributor.author | Bodwin, Geoffrey T. | - |
dc.contributor.author | Chung, Hee Sok | - |
dc.contributor.author | Ee, June-Haak | - |
dc.contributor.author | Lee, Jungil | - |
dc.date.accessioned | 2021-09-03T08:18:34Z | - |
dc.date.available | 2021-09-03T08:18:34Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-03-23 | - |
dc.identifier.issn | 2470-0010 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/84117 | - |
dc.description.abstract | We present a calculation of the rates for Higgs-boson decays to a vector heavy-quarkonium state plus a photon, where the heavy-quarkonium states are the J/psi and the gamma(nS) states, with n = 1, 2, or 3. The calculation is carried out in the light-cone formalism, combined with nonrelativistic QCD factorization, and is accurate at leading order in m(Q)(2)/m(H)(2), where mQ is the heavy-quark mass and m(H) is the Higgs-boson mass. The calculation contains corrections through next-to-leading order in the strong-coupling constant as and the square of the heavy-quark velocity v, and includes a resummation of logarithms of m(H)(2)/m(Q)(2) Q at next-to-leading logarithmic accuracy. We have developed a new method, which makes use of Abel summation, accelerated through the use of Pade approximants, to deal with divergences in the resummed expressions for the quarkonium light-cone distribution amplitudes. This approach allows us to make definitive calculations of the resummation effects. Contributions from the order-alpha(s) and order-upsilon(2) corrections to the light-cone distribution amplitudes that we obtain with this new method differ substantially from the corresponding contributions that one obtains from a model light-cone distribution amplitude [M. Konig and M. Neubert, J. High Energy Phys. 08 (2015) 012]. Our results for the real parts of the direct-process amplitudes are considerably smaller than those from one earlier calculation [G. T. Bodwin, H.S. Chung, J.-H. Ee, J. Lee, and F. Petriello, Phys. Rev. D 90, 113010 (2014)], reducing the sensitivity to the Higgs-boson-heavy-quark couplings, and are somewhat smaller than those from another earlier calculation [M. Konig and M. Neubert, J. High Energy Phys. 08 (2015) 012]. However, our results for the standard-model Higgs-boson branching fractions are in good agreement with those in M. Knig and M. Neubert, J. High Energy Phys. 08 (2015) 012. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.subject | TO-LEADING ORDER | - |
dc.subject | EXCLUSIVE PROCESSES | - |
dc.subject | QUANTUM CHROMODYNAMICS | - |
dc.subject | DISTRIBUTION AMPLITUDE | - |
dc.subject | WAVE-FUNCTIONS | - |
dc.subject | FORM-FACTORS | - |
dc.subject | EVOLUTION | - |
dc.subject | QCD | - |
dc.subject | MESONS | - |
dc.title | New approach to the resummation of logarithms in Higgs-boson decays to a vector quarkonium plus a photon | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jungil | - |
dc.identifier.doi | 10.1103/PhysRevD.95.054018 | - |
dc.identifier.scopusid | 2-s2.0-85019897628 | - |
dc.identifier.wosid | 000399254800003 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW D, v.95, no.5 | - |
dc.relation.isPartOf | PHYSICAL REVIEW D | - |
dc.citation.title | PHYSICAL REVIEW D | - |
dc.citation.volume | 95 | - |
dc.citation.number | 5 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Astronomy & Astrophysics | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Astronomy & Astrophysics | - |
dc.relation.journalWebOfScienceCategory | Physics, Particles & Fields | - |
dc.subject.keywordPlus | TO-LEADING ORDER | - |
dc.subject.keywordPlus | EXCLUSIVE PROCESSES | - |
dc.subject.keywordPlus | QUANTUM CHROMODYNAMICS | - |
dc.subject.keywordPlus | DISTRIBUTION AMPLITUDE | - |
dc.subject.keywordPlus | WAVE-FUNCTIONS | - |
dc.subject.keywordPlus | FORM-FACTORS | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | QCD | - |
dc.subject.keywordPlus | MESONS | - |
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