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

## Abstract

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 simplies 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→2processes.

- Authors:

- National Centre for Nuclear Research, Warsaw (Poland)
- Polish Academy of Sciences, Kraków (Poland); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Université Paris-Saclay, Palaiseau (France)
- INFN Sezione di Pavia (Italy)

- Publication Date:

- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)

- OSTI Identifier:
- 1557101

- Report Number(s):
- BNL-211974-2019-JAAM

Journal ID: ISSN 1029-8479

- Grant/Contract Number:
- SC0012704

- Resource Type:
- Accepted Manuscript

- Journal Name:
- Journal of High Energy Physics (Online)

- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 7; Journal ID: ISSN 1029-8479

- Publisher:
- Springer Berlin

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Heavy Ion Phenomenology

### Citation Formats

```
Altinoluk, Tolga, Boussarie, Renaud, Marquet, Cyrille, and Taels, Pieter. TMD factorization for dijets + photon production from the dilute-dense CGC framework. United States: N. p., 2019.
Web. doi:10.1007/JHEP07(2019)079.
```

```
Altinoluk, Tolga, Boussarie, Renaud, Marquet, Cyrille, & Taels, Pieter. TMD factorization for dijets + photon production from the dilute-dense CGC framework. United States. doi:10.1007/JHEP07(2019)079.
```

```
Altinoluk, Tolga, Boussarie, Renaud, Marquet, Cyrille, and Taels, Pieter. Tue .
"TMD factorization for dijets + photon production from the dilute-dense CGC framework". United States. doi:10.1007/JHEP07(2019)079. https://www.osti.gov/servlets/purl/1557101.
```

```
@article{osti_1557101,
```

title = {TMD factorization for dijets + photon production from the dilute-dense CGC framework},

author = {Altinoluk, Tolga and Boussarie, Renaud and Marquet, Cyrille and Taels, Pieter},

abstractNote = {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 simplies 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→2processes.},

doi = {10.1007/JHEP07(2019)079},

journal = {Journal of High Energy Physics (Online)},

number = 7,

volume = 2019,

place = {United States},

year = {2019},

month = {7}

}

*Citation information provided by*

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