Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method
Authors
Abdulhamid, MI
Al-Mashad, MA
Martinez, AB
Bonomelli, G
Bubanja, I
Crnković, N
Colombina, F
D’Anzi, B
Cerci, S
Davydov, M
Banos, LIE
Forzano, N
Hautmann, F
Kim, S
Quirós, AL
Martins, DE
Mendizabal, M
Figueroa, KM
Prestel, S
Monfared, ST
Süslü, C
Cerci, DS
van Kampen, AM
Van Mechelen, P
Verbytskyi, A
Wang, Q
Yang, H
Zhou, Y
Publication Date
2022-01Journal Title
European Physical Journal C
ISSN
1434-6044
Publisher
Springer Science and Business Media LLC
Volume
82
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Abdulhamid, M., Al-Mashad, M., Martinez, A., Bonomelli, G., Bubanja, I., Crnković, N., Colombina, F., et al. (2022). Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method. European Physical Journal C, 82 (1) https://doi.org/10.1140/epjc/s10052-022-09997-1
Abstract
<jats:title>Abstract</jats:title><jats:p>The azimuthal correlation, <jats:inline-formula><jats:alternatives><jats:tex-math>$$\Delta \phi _{12}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mrow>
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<mml:msub>
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<mml:mn>12</mml:mn>
</mml:msub>
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</mml:math></jats:alternatives></jats:inline-formula>, of high transverse momentum jets in pp collisions at <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}=13$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
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<mml:mi>s</mml:mi>
</mml:msqrt>
<mml:mo>=</mml:mo>
<mml:mn>13</mml:mn>
</mml:mrow>
</mml:math></jats:alternatives></jats:inline-formula> TeV is studied by applying PB-TMD distributions to NLO calculations via MCatNLO together with the PB-TMD parton shower. A very good description of the cross section as a function of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\Delta \phi _{12}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
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</mml:math></jats:alternatives></jats:inline-formula> is observed. In the back-to-back region of <jats:inline-formula><jats:alternatives><jats:tex-math>$${\Delta \phi _{12}}\rightarrow \pi $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mrow>
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<mml:mo>→</mml:mo>
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</mml:math></jats:alternatives></jats:inline-formula>, a very good agreement is observed with the PB-TMD Set 2 distributions while significant deviations are obtained with the PB-TMD Set 1 distributions. Set 1 uses the evolution scale while Set 2 uses transverse momentum as an argument in <jats:inline-formula><jats:alternatives><jats:tex-math>$$\alpha _\mathrm {s}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
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</mml:math></jats:alternatives></jats:inline-formula>, and the above observation therefore confirms the importance of an appropriate soft-gluon coupling in angular ordered parton evolution. The total uncertainties of the predictions are dominated by the scale uncertainties of the matrix element, while the uncertainties coming from the PB-TMDs and the corresponding PB-TMD shower are very small. The <jats:inline-formula><jats:alternatives><jats:tex-math>$$\Delta \phi _{12}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
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</mml:math></jats:alternatives></jats:inline-formula> measurements are also compared with predictions using MCatNLO together <jats:sc>Pythia</jats:sc>8, illustrating the importance of details of the parton shower evolution.</jats:p>
Keywords
Regular Article - Theoretical Physics
Identifiers
s10052-022-09997-1, 9997
External DOI: https://doi.org/10.1140/epjc/s10052-022-09997-1
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333032
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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