Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector
dc.contributor.author | Aaboud, M | |
dc.contributor.author | Aad, G | |
dc.contributor.author | Abbott, B | |
dc.contributor.author | Abdallah, J | |
dc.contributor.author | Abdinov, O | |
dc.contributor.author | Abeloos, B | |
dc.contributor.author | Aben, R | |
dc.contributor.author | AbouZeid, O S | |
dc.contributor.author | Abraham, N L | |
dc.contributor.author | Abramowicz, H | |
dc.contributor.author | Abreu, H | |
dc.contributor.author | Abreu, R | |
dc.contributor.author | Abulaiti, Y | |
dc.contributor.author | Acharya, B S | |
dc.contributor.author | Adamczyk, L | |
dc.contributor.author | Adams, D L | |
dc.contributor.author | Adelman, J | |
dc.contributor.author | Adomeit, S | |
dc.contributor.author | Adye, T | |
dc.contributor.author | Affolder, A A | |
dc.contributor.author | Agatonovic-Jovin, T | |
dc.contributor.author | Agricola, J | |
dc.contributor.author | Aguilar-Saavedra, J A | |
dc.contributor.author | Ahlen, S P | |
dc.contributor.author | Ahmadov, F | |
dc.contributor.author | Aielli, G | |
dc.contributor.author | Akerstedt, H | |
dc.contributor.author | Åkesson, T P A | |
dc.contributor.author | Akimov, A V | |
dc.contributor.author | Alberghi, G L | |
dc.contributor.author | Albert, J | |
dc.contributor.author | Albrand, S | |
dc.date.accessioned | 2021-10-08T07:08:11Z | |
dc.date.available | 2021-10-08T07:08:11Z | |
dc.date.issued | 2016 | |
dc.description.abstract | Measurements of the jet activity in tt¯ events produced in proton-proton collisions at √ s = 8 TeV are presented, using 20.3 fb−1 of data collected by the ATLAS experiment at the Large Hadron Collider. The events were selected in the dilepton eµ decay channel with two identified b-jets. The numbers of additional jets for various jet transverse momentum (pT) thresholds, and the normalised differential cross-sections as a function of pT for the five highest-pT additional jets, were measured in the jet pseudorapidity range |η| < 4.5. The gap fraction, the fraction of events which do not contain an additional jet in a central rapidity region, was measured for several rapidity intervals as a function of the minimum pT of a single jet or the scalar sum of pT of all additional jets. These fractions were also measured in different intervals of the invariant mass of the eµb¯b system. All measurements were corrected for detector effects, and found to be mostly well-described by predictions from next-to-leading-order and leading-order tt¯ event generators with appropriate parameter choices. The results can be used to further optimise the parameters used in such generators. | |
dc.identifier.apacitation | Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., ... Albrand, S. (2016). Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector. <i>Journal of High Energy Physics</i>, 2016(9), 174 - 177. http://hdl.handle.net/11427/34522 | en_ZA |
dc.identifier.chicagocitation | Aaboud, M, G Aad, B Abbott, J Abdallah, O Abdinov, B Abeloos, R Aben, et al "Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector." <i>Journal of High Energy Physics</i> 2016, 9. (2016): 174 - 177. http://hdl.handle.net/11427/34522 | en_ZA |
dc.identifier.citation | Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R. & AbouZeid, O.S. et al. 2016. Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector. <i>Journal of High Energy Physics.</i> 2016(9):174 - 177. http://hdl.handle.net/11427/34522 | en_ZA |
dc.identifier.issn | 1029-8479 | |
dc.identifier.issn | 1126-6708 | |
dc.identifier.ris | TY - Journal Article AU - Aaboud, M AU - Aad, G AU - Abbott, B AU - Abdallah, J AU - Abdinov, O AU - Abeloos, B AU - Aben, R AU - AbouZeid, O S AU - Abraham, N L AU - Abramowicz, H AU - Abreu, H AU - Abreu, R AU - Abulaiti, Y AU - Acharya, B S AU - Adamczyk, L AU - Adams, D L AU - Adelman, J AU - Adomeit, S AU - Adye, T AU - Affolder, A A AU - Agatonovic-Jovin, T AU - Agricola, J AU - Aguilar-Saavedra, J A AU - Ahlen, S P AU - Ahmadov, F AU - Aielli, G AU - Akerstedt, H AU - Åkesson, T P A AU - Akimov, A V AU - Alberghi, G L AU - Albert, J AU - Albrand, S AB - Measurements of the jet activity in tt¯ events produced in proton-proton collisions at √ s = 8 TeV are presented, using 20.3 fb−1 of data collected by the ATLAS experiment at the Large Hadron Collider. The events were selected in the dilepton eµ decay channel with two identified b-jets. The numbers of additional jets for various jet transverse momentum (pT) thresholds, and the normalised differential cross-sections as a function of pT for the five highest-pT additional jets, were measured in the jet pseudorapidity range |η| < 4.5. The gap fraction, the fraction of events which do not contain an additional jet in a central rapidity region, was measured for several rapidity intervals as a function of the minimum pT of a single jet or the scalar sum of pT of all additional jets. These fractions were also measured in different intervals of the invariant mass of the eµb¯b system. All measurements were corrected for detector effects, and found to be mostly well-described by predictions from next-to-leading-order and leading-order tt¯ event generators with appropriate parameter choices. The results can be used to further optimise the parameters used in such generators. DA - 2016 DB - OpenUCT DP - University of Cape Town IS - 9 J1 - Journal of High Energy Physics LK - https://open.uct.ac.za PY - 2016 SM - 1029-8479 SM - 1126-6708 T1 - Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector TI - Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector UR - http://hdl.handle.net/11427/34522 ER - | en_ZA |
dc.identifier.uri | http://hdl.handle.net/11427/34522 | |
dc.identifier.vancouvercitation | Aaboud M, Aad G, Abbott B, Abdallah J, Abdinov O, Abeloos B, et al. Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector. Journal of High Energy Physics. 2016;2016(9):174 - 177. http://hdl.handle.net/11427/34522. | en_ZA |
dc.language.iso | eng | |
dc.publisher.department | Department of Physics | |
dc.publisher.faculty | Faculty of Science | |
dc.source | Journal of High Energy Physics | |
dc.source.journalissue | 9 | |
dc.source.journalvolume | 2016 | |
dc.source.pagination | 174 - 177 | |
dc.source.uri | https://dx.doi.org/10.1007/JHEP09(2016)074 | |
dc.subject.other | Hadron-hadron scattering (experiments) | |
dc.subject.other | Física | |
dc.subject.other | article | |
dc.title | Measurement of jet activity in top quark events using the eµ final state with two b-tagged jets in pp collisions at √s = 8 TeV with the ATLAS detector | |
dc.type | Journal Article | |
uct.type.publication | Research | |
uct.type.resource | Journal Article |
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