Eva Griffith. &lt;i&gt;A Jacobean Company and its Playhouse: The Queen’s Servants at the Red Bull Theatre (c. 1605-1619)&lt;/i&gt;. Cambridge: Cambridge University Press, 2013. Pp 305.

Collins, Eleanor

doi:10.12745/et.18.1.2576

Cited by 2 publications

(15 citation statements)

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“…2.1). The explicit expression for F (2) (qγ−qg) , in which the photon is emitted before the gluon, reads (see for example [33])…”

Section: )mentioning

confidence: 99%

“…(qq−qγ) and F (2) (qq−qγ) , which appear at O(g e g s ), define the momentum structure of two successive splittings: the splitting of the gluon in a quark-antiquark pair, followed by photon emission from the antiquark, or the gluon splitting followed by photon emission from the quark, respectively (see Fig. 2.2).…”

Section: Gluon Initiated Channel: Ga → Qqγ + Xmentioning

confidence: 99%

“…It can easily be seen that the momentum structure of the parts that multiply the double trace operator, is symmetric under the exchange of i ↔ j, since the function Mλλ ;ηη g is symmetric under the simultaneous exchangesλ ↔λ andη ↔η . Using this symmetry property, together with the exchange of the coordinates z 3 ↔ y 3 , these two terms can be written as I (1,2) qγ−qγ = 8 Mλλ ;ηη qq ξ 1 ,…”

Section: 21qγ −Qγ Contributionmentioning

confidence: 99%

“…gg ), and their polarized partners (H (1) gg and H (2) gg ), are related to the gluon TMD that is build from a dipole in the adjoint representation:…”

Section: 21qγ −Qγ Contributionmentioning

confidence: 99%

“…qg , the adjoint-dipole gluon TMD F adj and the Weizsäcker-Williams (unpolarized and linearly-polarized) distributions F [43], it is easy to see from the definitions of the gluon TMDs that for each of them C-parity amounts to CF(x 2 , P)C = F(x 2 , −P)). The other four gluon distributions F (2) qg , H…”

Section: Final Factorized Expressionsmentioning

confidence: 99%

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TMD factorization for dijets + photon production from the dilute-dense CGC framework

Altinoluk

Boussarie

Marquet

et al. 2019

J. High Energ. Phys.

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We calculate the production of a photon and two jets at forward rapidity in proton-nucleus collisions, within the hybrid dilute-dense framework in the Color Glass Condensate (CGC) formalism. After obtaining the cross section for both the quark-and gluon-initiated channels, we consider the correlation limit, in which the vector sum of the transverse momenta of the three outgoing particles is small with respect to the individual transverse momenta. In this limit, the cross section simplifies considerably and can be written in a factorized form, sensitive to various unpolarized and linearly-polarized transverse-momentum-dependent gluon distribution functions (gluon TMDs). Thus, we demonstrate for the first time that the emergence of a TMD factorization formula in the correlation limit, from CGC expressions, holds beyond the previously-considered simpler 2 → 2 processes.In the case of collinear factorization, there is a single hard scale, and the PDFs and FFs are only a function of this scale and of the longitudinal momentum fraction x of the parton. However, in less inclusive processes that depend on a second, smaller scale, these distributions need to be generalized to include the dependence on the transverse momentum of the parton, yielding the so-called transverse-momentum-dependent (TMD) PDFs and FFs. These TMD PDFs/FFs are of great interest since their measurement offers insight in the three-dimensional structure of the proton in terms of the QCD degrees of freedom. However, in contrast to their collinear counterparts, which are believed to be universal, they depend on the hard process under consideration and are therefore more complicated.The radiative corrections that are considered in collinear factorization involve logarithms ln Q 2 /µ 2 in the scale, and can be resummed with the help of the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) [1] evolution equations. In the TMD factorization framework [2], additional logarithms of the form ln Q 2 /k 2 t need to be resummed, where k t is the small transverse momentum scale in the problem.At very high energies, however, soft logarithms in the center-of-mass energy ln s are expected to be dominant, necessitating a resummation and subsequently an evolution equation in rapidity instead of the scale, provided by the (linear) Balitsky-Fadin-Kuraev-Lipatov (BFKL) equation [3]. BFKL involves a universal unintegrated gluon PDF, which just like the TMDs depends on transverse momentum. One of the most fascinating aspects of QCD at high energy or small x, is the phenomenon of saturation [4]: the damping of the steep rise of the gluon density predicted by BFKL, caused by gluon recombinations which become important due to the high density. The low-x evolution of the gluon density in the presence of these nonlinear interactions is described by an effective theory known as the Color Glass Condensate (CGC), which leads to the nonlinear BK-JIMWLK evolution equations [5][6][7][8].Within the CGC framework, the hybrid formalism [9] is used to study single inclusive particle produ...

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“…2.1). The explicit expression for F (2) (qγ−qg) , in which the photon is emitted before the gluon, reads (see for example [33])…”

Section: )mentioning

confidence: 99%

Section: Gluon Initiated Channel: Ga → Qqγ + Xmentioning

confidence: 99%

Section: 21qγ −Qγ Contributionmentioning

confidence: 99%

“…gg ), and their polarized partners (H (1) gg and H (2) gg ), are related to the gluon TMD that is build from a dipole in the adjoint representation:…”

Section: 21qγ −Qγ Contributionmentioning

confidence: 99%

Section: Final Factorized Expressionsmentioning

confidence: 99%

See 3 more Smart Citations

TMD factorization for dijets + photon production from the dilute-dense CGC framework

Altinoluk

Boussarie

Marquet

et al. 2019

J. High Energ. Phys.

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Low-$x$ improved TMD approach to the lepto- and hadroproduction of a heavy-quark pair

Altinoluk,

Marquet,

Taels

2021

Preprint

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We study lepto-and hadroproduction of a heavy-quark pair in the ITMD factorization framework for dilute-dense collisions. Due to the presence of a nonzero quark mass and/or nonzero photon virtuality, new contributions appear compared to the cases of photo-and hadroproduction of dijets, for which the ITMD framework was originally derived. The extra terms are sensitive to gluons that are not fully linearly polarized. At small x those gluons emerge only when saturation effects are taken into account, and in a proper way. As a result, in linear small-x frameworks where gluon are fully linearly polarized, such contributions are absent. We show however that they are not always negligible, even for large gluon transverse momentum, due to the behavior of the off-shell hard factors.

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Eva Griffith. <i>A Jacobean Company and its Playhouse: The Queen’s Servants at the Red Bull Theatre (c. 1605-1619)</i>. Cambridge: Cambridge University Press, 2013. Pp 305.

Cited by 2 publications

References 0 publications

TMD factorization for dijets + photon production from the dilute-dense CGC framework

TMD factorization for dijets + photon production from the dilute-dense CGC framework

Low-$x$ improved TMD approach to the lepto- and hadroproduction of a heavy-quark pair

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