dc.contributor.author | Baringer, Philip S. | |
dc.contributor.author | Bean, Alice | |
dc.contributor.author | Chen, G. | |
dc.contributor.author | Clutter, Justace Randall | |
dc.contributor.author | Sekaric, Jadranka | |
dc.contributor.author | Wilson, Graham Wallace | |
dc.contributor.author | Abazov, V. M. | |
dc.contributor.author | Abbott, B. | |
dc.contributor.author | Acharya, B. S. | |
dc.contributor.author | Adams, M. | |
dc.contributor.author | Adams, T. | |
dc.contributor.author | Alexeev, G. D. | |
dc.contributor.author | Alkhazov, G. | |
dc.contributor.author | Alton, A. | |
dc.contributor.author | Alverson, G. | |
dc.contributor.author | Askew, A. | |
dc.contributor.author | Atkins, S. | |
dc.date.accessioned | 2014-11-10T21:23:42Z | |
dc.date.available | 2014-11-10T21:23:42Z | |
dc.date.issued | 2013-01-24 | |
dc.identifier.citation | V. M. Abazov et al. (D0 Collaboration). (2013). "Measurement of leptonic asymmetries and top-quark polarization in tt-bar production." Physical Review D, 87(1):011103(R). http://www.dx.doi.org/10.1103/PhysRevD.87.011103. | |
dc.identifier.issn | 0556-2821 | |
dc.identifier.uri | http://hdl.handle.net/1808/15676 | |
dc.description | This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.87.011103. | |
dc.description.abstract | We present measurements of lepton (ℓ) angular distributions in top-quark (t) pair production and tt-bar→W+bW−b-bar→ℓ+νbℓ−ν-b-ar b-bar decays produced in pp-bar collisions at a center-of-mass energy of s√=1.96 TeV, where ℓ is an electron or muon. Using data corresponding to an integrated luminosity of 5.4 fb(−1), collected with the D0 detector at the Fermilab Tevatron Collider, we measure for the first time the leptonic forward-backward asymmetry in dilepton final states and obtain A(ℓ)(FB)=(5.8±5.1(stat)±1.3(syst))%, corrected for detector acceptance. This is compared to the standard model prediction of A(ℓ)(FB)(predicted)=(4.7±0.1)%. A deviation from the standard model prediction as previously seen in a D0 measurement based on the analysis of the ℓ+jets final state is not observed in these dilepton final states. The two results differ from each other by 1.4 standard deviations and are combined to obtain A(ℓ)(FB)=(11.8±3.2)%. Furthermore, we present a first study of the top-quark polarization. | |
dc.publisher | American Physical Society | |
dc.title | Measurement of leptonic asymmetries and top-quark polarization in tt-bar production | |
dc.type | Article | |
kusw.kuauthor | Baringer, Philip S. | |
kusw.kuauthor | Bean, Alice | |
kusw.kuauthor | Benelli, Gabriele | |
kusw.kuauthor | Kenny, R. P. III | |
kusw.kuauthor | Murray, Michael J. | |
kusw.kuauthor | Noonan, Danny | |
kusw.kuauthor | Sanders, Stephen J. | |
kusw.kuauthor | Stringer, Robert W. | |
kusw.kuauthor | Tinti, Gemma | |
kusw.kuauthor | Wood, Jeffrey Scott | |
kusw.kudepartment | Physics and Astronomy | |
kusw.oastatus | fullparticipation | |
dc.identifier.doi | 10.1103/PhysRevD.87.011103 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess | |