Joint thrust and TMD resummation in electron-positron and electron-proton collisions

Makris, Yiannis; Ringer, Felix; Waalewijn, Wouter J.

doi:10.1007/jhep02(2021)070

Cited by 20 publications

(52 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It would also be interesting to explore the application of the methods developed here and in ref. [62] to TMDFFs involving a jet measurement [58,135,136].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

TMD fragmentation functions at N3LO

Ebert

Mistlberger

Vita

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

We compute the unpolarized quark and gluon transverse-momentum dependent fragmentation functions (TMDFFs) at next-to-next-to-next-to-leading order (N3LO) in perturbative QCD. The calculation is based on a relation between the TMDFF and the limit of the semi-inclusive deep inelastic scattering cross section where all final-state radiation becomes collinear to the detected hadron. The required cross section is obtained by analytically continuing our recent computation of the Drell-Yan and Higgs boson production cross section at N3LO expanded around the limit of all final-state radiation becoming collinear to one of the initial states. Our results agree with a recent independent calculation by Luo et al.

show abstract

“…It would also be interesting to explore the application of the methods developed here and in ref. [62] to TMDFFs involving a jet measurement [58,135,136].…”

Section: Discussionmentioning

confidence: 99%

“…In the regime of perturbative q T , they can be used for example in extractions of longitudinal FFs from differential measurements of suitable observables, see for example refs. [56][57][58][59].…”

Section: Introductionmentioning

confidence: 99%

TMD fragmentation functions at N3LO

Ebert

Mistlberger

Vita

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…In this regard, shortly after the publication of this work, the transverse momentum spectrum of single-hadron production in e + e − has been investigated in two papers, Refs. [29,30], both based on a SCET treatment. In this framework, all soft/collinear contributions appear explicitly in the final cross section, in contrast to Eq.…”

Section: Factorized Cross Sectionmentioning

confidence: 99%

Universality-breaking effects in $$e^+e^-$$ hadronic production processes

Boglione

Simonelli

2021

Eur. Phys. J. C

View full text Add to dashboard Cite

Recent BELLE measurements provide the cross section for single hadron production in $$e^+e^-$$ e + e - annihilations, differential in thrust and in the hadron transverse momentum with respect to the thrust axis. Universality breaking effects due to process-dependent soft factors make it very difficult to relate this cross sections to those corresponding to hadron-pair production in $$e^+e^-$$ e + e - annihilations, where transverse momentum dependent (TMD) factorization can be applied. The correspondence between these two cross sections is examined in the framework of the Collins-Soper-Sterman factorization, in the collinear as well as in the TMD approach. We propose a scheme that allows to relate the TMD parton densities defined in 1-hadron and in 2-hadron processes, neatly separating, within the soft and collinear parts, the non-perturbative terms from the contributions that can be calculated perturbatively. The regularization of rapidity divergences introduces cut-offs, the arbitrariness of which will be properly reabsorbed by means of a mechanism closely reminiscent of a gauge transformation. In this way, we restore the possibility to perform global phenomenological studies of TMD physics, simultaneously analyzing data belonging to different hadron classes.

show abstract

“…One could claim that this is a symptom of nonconsistency of the corresponding factorization theorem (see for instance ref. [18]). We do not interpret this as a failure of the factorization itself, but rather as a limit of the Collins factorization formalism in this particular process.…”

Section: Jhep02(2022)013mentioning

confidence: 99%

“…This is one of the measurements which go closer to being a direct observation of a partonic variable, the transverse momentum of the hadron with respect to its parent fragmenting parton. As such, it has indeed triggered a great interest of the high energy physics community, especially among the experts in the phenomenological study of TMD phenomena and factorization [11,12,[14][15][16][17][18][19]. In this paper, we apply the Collins factorization formalism to such a QCD process and we show how to properly factorize it in each of the kinematic region in which it can occur.…”

Section: Jhep02(2022)013 1 Introductionmentioning

confidence: 99%

Kinematic regions in the e+e− → hX factorized cross section in a 2-jet topology with thrust

Boglione

Simonelli

2022

J. High Energ. Phys.

View full text Add to dashboard Cite

Factorization theorems allow to separate out the universal, non-perturbative content of the hadronic cross section from its perturbative part, which can be computed in perturbative QCD, up to the desired order. In this paper, we derive a rigorous proof of factorization of the e+e− → hX cross section, sensitive to the transverse momentum of the detected hadron with respect to the thrust axis, in a completely general framework, based on the Collins-Soper-Sterman approach. This procedure naturally leads to a partition of the e+e− → hX kinematics into three different regions, each associated to a different factorization theorem. In one of these regions, which covers the central and widest range, the factorization theorem has a new structure, which shares the features of both TMD and collinear factorization schemes. In the corresponding cross section, the role of the rapidity cut-off is investigated, as its physical meaning becomes increasingly evident. An algorithm to identify these three kinematic regions, based on ratios of observable quantities, is provided.

show abstract

Joint thrust and TMD resummation in electron-positron and electron-proton collisions

Cited by 20 publications

References 87 publications

TMD fragmentation functions at N3LO

TMD fragmentation functions at N3LO

Universality-breaking effects in $$e^+e^-$$ hadronic production processes

Kinematic regions in the e+e− → hX factorized cross section in a 2-jet topology with thrust

Contact Info

Product

Resources

About