Resumming soft and collinear contributions in deeply virtual Compton scattering

Altinoluk, Tolga; Pire, B.; Szymanowski, L.; Wallon, S.

doi:10.1007/jhep10(2012)049

Cited by 25 publications

(23 citation statements)

References 54 publications

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“…The idea is similar to that of the soft-collinear resummation for a light hadron wave function [34,41]. The difference arises from the effective heavyquark field involved in the definition of the former, which modifies the ultraviolet behavior of the evolution kernel.…”

Section: Introductionmentioning

confidence: 99%

Resummation of rapidity logarithms in B meson wave functions

Shen

Wang

2013

J. High Energ. Phys.

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Abstract:We construct an evolution equation for the B meson wave functions in the k T factorization theorem, whose solutions sum the double logarithms associated with the light-cone singularities, namely, the rapidity logarithms. The derivation is subtler than that of the Sudakov resummation for an energetic light hadron, due to the involvement of the effective heavy-quark field. The renormalization-group evolution in the factorization scale needs to be included in order to derive an ultraviolet-finite and scale-invariant kernel for resumming the rapidity logarithms. It is observed that this kernel is similar to that of the joint resummation for QCD processes in extreme kinematic regions, which combines the threshold and k T resummations. We show that the resummation effect maintains the normalization of the B meson wave functions, and strengths their convergent behavior at small spectator momentum. The resummation improved B meson wave functions are then employed in the leading-order analysis of the B → π transition form factors, which lead to approximately 25 % deduction in the large recoil region.

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Section: Introductionmentioning

confidence: 99%

Resummation of rapidity logarithms in B meson wave functions

Shen

Wang

2013

J. High Energ. Phys.

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“…In conclusion, let us stress that our results point to the importance of understanding higher order effects, and maybe of resumming series of large contributions [7]. They demonstrate that current attempts [8,9,10,11,12] to extract physics from DVCS data are but a first step in a long range program which will include data analysis from low to very high energy [13].…”

Section: Pos(dis 2013)220mentioning

confidence: 54%

On timelike and spacelike deeply virtual Compton scattering at next to leading order

Wagner¹,

Moutarde²,

Pire³

et al. 2013

Proceedings of XXI International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS 2013)

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We emphasize how large O(α s ) corrections to timelike and spacelike virtual Compton scattering amplitudes are in the generalized Bjorken scaling regime, and in particular the gluonic contributions, even in the medium energy range which will be studied intensely at JLab12 and in the COMPASS-II experiment at CERN. We stress that the timelike and spacelike cases are complementary and that their difference deserves much special attention. Deep-Inelastic Scattering and Related Subject -DIS2013, 22-26 April 2013 Marseilles,France * Speaker. XXI International Workshop on PoS(DIS 2013)220On timelike and spacelike DVCS at NLO J. Wagner

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“…Neither did we comment on recent progresses in higher twist contributions [13] nor on the effect of resummation of higher order QCD corrections [14]. The physics of generalized parton distributions is definitely a domain of work in progress, both on the theory and on the experimental side.…”

Section: Discussionmentioning

confidence: 93%

Timelike vs Spacelike DVCS from JLab, Compass to Ultraperipheral Collisions and AFTER@LHC

Moutarde¹,

Pire²,

Sabatié³

et al. 2014

PHY

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Timelike and spacelike virtual Compton scattering in the generalized Bjorken scaling regime are complementary tools to access generalized parton distributions. We stress that the gluonic contributions are by no means negligible, even in the medium energy range which will be studied intensely at JLab12 and in the COMPASS-II experiment at CERN. Ultraperipheral collisions with proton or ion beams may also be used at RHIC and at collider or fixed target experiments at LHC.

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Resumming soft and collinear contributions in deeply virtual Compton scattering

Cited by 25 publications

References 54 publications

Resummation of rapidity logarithms in B meson wave functions

Resummation of rapidity logarithms in B meson wave functions

On timelike and spacelike deeply virtual Compton scattering at next to leading order

Timelike vs Spacelike DVCS from JLab, Compass to Ultraperipheral Collisions and AFTER@LHC

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