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He, S; Zhang, Y; He, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.; He, S (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, 19A Yunnan Rd, Beijing 100049, Peoples R China.
Connected formulas for amplitudes in standard model
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
Language英语
KeywordEffective Field Theories Higgs Physics Perturbative Qcd Scattering Amplitudes
AbstractWitten's twistor string theory has led to new representations of S-matrix in massless QFT as a single object, including Cachazo-He-Yuan formulas in general and connected formulas in four dimensions. As a first step towards more realistic processes of the standard model, we extend the construction to QCD tree amplitudes with massless quarks and those with a Higgs boson. For both cases, we find connected formulas in four dimensions for all multiplicities which are very similar to the one for Yang-Mills amplitudes. The formula for quark-gluon color-ordered amplitudes differs from the pure-gluon case only by a Jacobian factor that depends on flavors and orderings of the quarks. In the formula for Higgs plus multi-parton amplitudes, the massive Higgs boson is effectively described by two additional massless legs which do not appear in the Parke-Taylor factor. The latter also represents the first twistor-string/connected formula for form factors.
2017
Issue3Pages:93
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1007/JHEP03(2017)093
Funding OrganizationThousand Young Talents program ; Thousand Young Talents program ; Thousand Young Talents program ; Thousand Young Talents program ; Key Research Program of Frontier Sciences of CAS [QYZDBSSW-SYS014] ; Key Research Program of Frontier Sciences of CAS [QYZDBSSW-SYS014] ; Key Research Program of Frontier Sciences of CAS [QYZDBSSW-SYS014] ; Key Research Program of Frontier Sciences of CAS [QYZDBSSW-SYS014] ; NSFC [11235003] ; NSFC [11235003] ; NSFC [11235003] ; NSFC [11235003]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/22103
CollectionSCI期刊论文
Corresponding AuthorHe, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.; He, S (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, 19A Yunnan Rd, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
He, S,Zhang, Y,He, S ,et al. Connected formulas for amplitudes in standard model[J]. JOURNAL OF HIGH ENERGY PHYSICS,2017(3):93.
APA He, S,Zhang, Y,He, S ,&He, S .(2017).Connected formulas for amplitudes in standard model.JOURNAL OF HIGH ENERGY PHYSICS(3),93.
MLA He, S,et al."Connected formulas for amplitudes in standard model".JOURNAL OF HIGH ENERGY PHYSICS .3(2017):93.
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