Measurement of differential bb¯- and cc¯-dijet cross-sections in the forward region of pp collisions at √s = 13 TeV; Journal of High Energy Physics; Vol. 2021, iss. 2
| Parent link: | Journal of High Energy Physics Vol. 2021, iss. 2.— 2021.— [23, 36 p.] |
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| Korporace: | , |
| Další autoři: | , , , , , , |
| Shrnutí: | Title screen The inclusive ¯bb¯- and ¯cc¯-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 bb¯-dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total ¯cc¯-dijet cross-section is measured to be 73 ± 16 nb. The ratio between cc¯- and bb¯-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. |
| Jazyk: | angličtina |
| Vydáno: |
2021
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| Témata: | |
| On-line přístup: | https://doi.org/10.1007/JHEP02(2021)023 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664700 |
| Shrnutí: | Title screen The inclusive ¯bb¯- and ¯cc¯-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 bb¯-dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total ¯cc¯-dijet cross-section is measured to be 73 ± 16 nb. The ratio between cc¯- and bb¯-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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| DOI: | 10.1007/JHEP02(2021)023 |