Helicity amplitudes for high-energy scattering

Hameren, A. van; Kotko, Piotr; Kutak, Krzysztof

doi:10.1007/jhep01(2013)078

Cited by 122 publications

(204 citation statements)

References 35 publications

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“…[11,34] and [35]. The equivalence of the CGC and HEF formulas in the dilute limit can be shown in a similar way for the cross sections of the other two subprocesses, gg * → qq and gg * → gg.…”

Section: Jhep09(2015)106mentioning

confidence: 56%

“…In an arbitrary gauge, for internal and external gluon lines, more sophisticated methods have to be used, see e.g. [35,[45][46][47][48].…”

Section: Unified Description Of Forward Dijets In P+a Collisions: Tmdmentioning

confidence: 99%

“…[10], such a procedure yields results which are gauge invariant within a subclass of axial gauges with the gauge vector n µ = ap µ p + bp µ A , where a and b are arbitrary complex numbers. There are also methods to calculate gauge invariant off-shell amplitudes in any gauge and choice of polarization vectors [34,35,47,48]. In what follows, we shall use those methods and specifically the results of [35,48].…”

Section: Off-shell Color-ordered Helicity Amplitudesmentioning

confidence: 99%

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Improved TMD factorization for forward dijet production in dilute-dense hadronic collisions

Kotko

Kutak

Marquet

et al. 2015

J. High Energ. Phys.

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138

145

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We study forward dijet production in dilute-dense hadronic collisions. By considering the appropriate limits, we show that both the transverse-momentum-dependent (TMD) and the high-energy factorization formulas can be derived from the Color Glass Condensate framework. Respectively, this happens when the transverse momentum imbalance of the dijet system, k t , is of the order of either the saturation scale, or the hard jet momenta, the former being always much smaller than the latter. We propose a new formula for forward dijets that encompasses both situations and is therefore applicable regardless of the magnitude of k t . That involves generalizing the TMD factorization formula for dijet production to the case where the incoming small-x gluon is off-shell. The derivation is performed in two independent ways, using either Feynman diagram techniques, or color-ordered amplitudes.

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Section: Jhep09(2015)106mentioning

confidence: 56%

“…In an arbitrary gauge, for internal and external gluon lines, more sophisticated methods have to be used, see e.g. [35,[45][46][47][48].…”

Section: Unified Description Of Forward Dijets In P+a Collisions: Tmdmentioning

confidence: 99%

Section: Off-shell Color-ordered Helicity Amplitudesmentioning

confidence: 99%

See 1 more Smart Citation

Improved TMD factorization for forward dijet production in dilute-dense hadronic collisions

Kotko

Kutak

Marquet

et al. 2015

J. High Energ. Phys.

Self Cite

138

145

View full text Add to dashboard Cite

show abstract

“…These effects are beyond treatments based on next-to-leadingorder perturbation theory matched with collinear parton showers [47]. With automated methods for off-shell multileg calculations currently being developed [48], the TMD approach could become a general tool for phenomenological analyses of complex hadroproduction final states at the LHC.…”

Section: Discussionmentioning

confidence: 99%

Hadron structure beyond collinear level and precision DIS measurements

Hautmann

Jung

2015

EPJ Web of Conferences

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Abstract. General formulations of QCD factorization for hadronic collisions extend the notion of ordinary parton distributions to transverse-momentum dependent (TMD) parton density and parton decay functions. We discuss the use of the recent high-precision deep-inelastic scattering (DIS) measurements for determination of TMD distributions. These are relevant for both low-p T and high-p T physics in hadron collisions. We comment on applications to multi-jet final states associated with electroweak gauge boson production at the LHC.

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“…Within this kinematics, the high energy approximation in the form of usual eikonal couplings can than be performed. From the practical point of view, these manipulations can be implemented numerically [29,30]. This led to an evaluation of ratio of observable distributions for p − p versus p − Pb collisions.…”

Section: Small X Diffraction and Vector Mesons Working Group Summarymentioning

confidence: 99%