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Aad, G.;
Abbott, B.;
Abbott, D. C.;
Abeling, K.;
Abidi, S. H.;
Aboulhorma, A.;
Abramowicz, H.;
Abreu, H.;
Abulaiti, Y.;
Abusleme Hoffman, A. C.;
Acharya, B. S.;
Adam Bourdarios, C.;
Adamczyk, L.;
Adamek, L.;
Addepalli, S. V.;
Adelman, J.;
Adiguzel, A.;
Adorni, S.;
Adye, T.;
Affolder, A. A.;
Afik, Y.;
Agaras, M. N.;
Agarwala, J.;
Aggarwal, A.;
[...]
ATLAS flavour-tagging algorithms for the LHC Run 2 pp collision dataset
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- Medientyp: E-Artikel
- Titel: ATLAS flavour-tagging algorithms for the LHC Run 2 pp collision dataset
- Beteiligte: Aad, G.; Abbott, B.; Abbott, D. C.; Abeling, K.; Abidi, S. H.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Abusleme Hoffman, A. C.; Acharya, B. S.; Adam Bourdarios, C.; Adamczyk, L.; Adamek, L.; Addepalli, S. V.; Adelman, J.; Adiguzel, A.; Adorni, S.; Adye, T.; Affolder, A. A.; Afik, Y.; Agaras, M. N.; Agarwala, J.; Aggarwal, A.; [...]
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Erschienen:
Springer Science and Business Media LLC, 2023
- Erschienen in: The European Physical Journal C
- Sprache: Englisch
- DOI: 10.1140/epjc/s10052-023-11699-1
- ISSN: 1434-6052
- Entstehung:
- Anmerkungen:
- Beschreibung: <jats:title>Abstract</jats:title><jats:p>The flavour-tagging algorithms developed by the ATLAS Collaboration and used to analyse its dataset of <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"> <mml:mrow> <mml:msqrt> <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 <jats:italic>pp</jats:italic> collisions from Run 2 of the Large Hadron Collider are presented. These new tagging algorithms are based on recurrent and deep neural networks, and their performance is evaluated in simulated collision events. These developments yield considerable improvements over previous jet-flavour identification strategies. At the 77% <jats:italic>b</jats:italic>-jet identification efficiency operating point, light-jet (charm-jet) rejection factors of 170 (5) are achieved in a sample of simulated Standard Model <jats:inline-formula><jats:alternatives><jats:tex-math>$$t\bar{t}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>t</mml:mi> <mml:mover> <mml:mrow> <mml:mi>t</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> events; similarly, at a <jats:italic>c</jats:italic>-jet identification efficiency of 30%, a light-jet (<jats:italic>b</jats:italic>-jet) rejection factor of 70 (9) is obtained.</jats:p>
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