Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV

Abstract The inclusive b b ¯ $$ b\overline{b} $$...

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Main Authors: Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C. A, Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z.
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Language:English
Published: Springer Berlin Heidelberg 2021
Online Access:https://hdl.handle.net/1721.1/132018
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spelling dmit-1721.1-1320182021-09-21T03:59:05Z Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV Aaij, R. Abellán Beteta, C. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C. A Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. Alfonso Albero, A. Aliouche, Z. Abstract The inclusive b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet production cross-sections in the forward region of pp collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb−1. Differential cross-sections are measured as a function of the transverse momentum and of the pseudorapidity of the leading jet, of the rapidity difference between the jets, and of the dijet invariant mass. A fiducial region for the measurement is defined by requiring that the two jets originating from the two b or c quarks are emitted with transverse momentum greater than 20 GeV/c, pseudorapidity in the range 2.2 < η < 4.2, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated b b ¯ $$ b\overline{b} $$ -dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total c c ¯ $$ c\overline{c} $$ -dijet cross-section is measured to be 73 ± 16 nb. The ratio between c c ¯ $$ c\overline{c} $$ - and b b ¯ $$ b\overline{b} $$ -dijet cross-sections is also measured and found to be 1.37 ± 0.27. The results are in agreement with theoretical predictions at next-to-leading order. 2021-09-20T17:41:27Z 2021-09-20T17:41:27Z 2021-02-02 2021-02-14T04:54:07Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/132018 Journal of High Energy Physics. 2021 Feb 02;2021(2):23 PUBLISHER_CC en https://doi.org/10.1007/JHEP02(2021)023 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg
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language English
description Abstract The inclusive b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet production cross-sections in the forward region of pp collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb−1. Differential cross-sections are measured as a function of the transverse momentum and of the pseudorapidity of the leading jet, of the rapidity difference between the jets, and of the dijet invariant mass. A fiducial region for the measurement is defined by requiring that the two jets originating from the two b or c quarks are emitted with transverse momentum greater than 20 GeV/c, pseudorapidity in the range 2.2 < η < 4.2, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated b b ¯ $$ b\overline{b} $$ -dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total c c ¯ $$ c\overline{c} $$ -dijet cross-section is measured to be 73 ± 16 nb. The ratio between c c ¯ $$ c\overline{c} $$ - and b b ¯ $$ b\overline{b} $$ -dijet cross-sections is also measured and found to be 1.37 ± 0.27. The results are in agreement with theoretical predictions at next-to-leading order.
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author Aaij, R.
Abellán Beteta, C.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Aidala, C. A
Aiola, S.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Aliouche, Z.
spellingShingle Aaij, R.
Abellán Beteta, C.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Aidala, C. A
Aiola, S.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Aliouche, Z.
Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV
author_facet Aaij, R.
Abellán Beteta, C.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Aidala, C. A
Aiola, S.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Aliouche, Z.
author_sort Aaij, R.
title Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV
title_short Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV
title_full Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV
title_fullStr Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV
title_full_unstemmed Measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 TeV
title_sort measurement of differential b b ¯ $$ b\overline{b} $$ - and c c ¯ $$ c\overline{c} $$ -dijet cross-sections in the forward region of pp collisions at s $$ \sqrt{s} $$ = 13 tev
publisher Springer Berlin Heidelberg
publishDate 2021
url https://hdl.handle.net/1721.1/132018
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