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.authorAaboud, M
dc.contributor.authorAad, G
dc.contributor.authorAbbott, B
dc.contributor.authorAbdallah, J
dc.contributor.authorAbdinov, O
dc.contributor.authorAbeloos, B
dc.contributor.authorAben, R
dc.contributor.authorAbouZeid, O S
dc.contributor.authorAbraham, N L
dc.contributor.authorAbramowicz, H
dc.contributor.authorAbreu, H
dc.contributor.authorAbreu, R
dc.contributor.authorAbulaiti, Y
dc.contributor.authorAcharya, B S
dc.contributor.authorAdamczyk, L
dc.contributor.authorAdams, D L
dc.contributor.authorAdelman, J
dc.contributor.authorAdomeit, S
dc.contributor.authorAdye, T
dc.contributor.authorAffolder, A A
dc.contributor.authorAgatonovic-Jovin, T
dc.contributor.authorAgricola, J
dc.contributor.authorAguilar-Saavedra, J A
dc.contributor.authorAhlen, S P
dc.contributor.authorAhmadov, F
dc.contributor.authorAielli, G
dc.contributor.authorAkerstedt, H
dc.contributor.authorÅkesson, T P A
dc.contributor.authorAkimov, A V
dc.contributor.authorAlberghi, G L
dc.contributor.authorAlbert, J
dc.contributor.authorAlbrand, S
dc.date.accessioned2021-10-08T07:08:11Z
dc.date.available2021-10-08T07:08:11Z
dc.date.issued2016
dc.description.abstractMeasurements 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.apacitationAaboud, 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/11427/34522en_ZA
dc.identifier.chicagocitationAaboud, 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/11427/34522en_ZA
dc.identifier.citationAaboud, 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/11427/34522en_ZA
dc.identifier.issn1029-8479
dc.identifier.issn1126-6708
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.urihttp://hdl.handle.net/11427/34522
dc.identifier.vancouvercitationAaboud 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.isoeng
dc.publisher.departmentDepartment of Physics
dc.publisher.facultyFaculty of Science
dc.sourceJournal of High Energy Physics
dc.source.journalissue9
dc.source.journalvolume2016
dc.source.pagination174 - 177
dc.source.urihttps://dx.doi.org/10.1007/JHEP09(2016)074
dc.subject.otherHadron-hadron scattering (experiments)
dc.subject.otherFísica
dc.subject.otherarticle
dc.titleMeasurement 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.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
AaboudM_Measurementjet_2016.pdf
Size:
2.95 MB
Format:
Adobe Portable Document Format
Description:
Collections