21 documents found, page 1 of 3
Measurement of the tt̄ production cross section in pp̄ collisions using dilepto...
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2022-04-28T20:20:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-09-28; We present a measurement of the tt̄ pair production cross section in pp̄ collisions at s=1.96TeV utilizing approximately 425pb-1 of data collected with the D0 detector. We consider decay channels containing two high pT charged leptons (either e or μ) from leptonic decays of both top-daughter W bosons. T...
Search for Bs0→μ+μ- decays at D0
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2022-04-28T20:33:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-11-05; We report results from a search for the decay Bs0→μ+μ- using 1.3fb-1 of pp̄ collisions at s=1.96TeV collected by the D0 experiment at the Fermilab Tevatron Collider. We find two candidate events, consistent with the expected background of 1.24±0.99, and set an upper limit on the branching fraction of B(...
Measurement of the tt̄ production cross section in pp̄ collisions at s=1.96TeV ...
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2022-04-28T20:34:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-11-27; We present a measurement of the top quark pair production cross section in pp̄ collisions at s=1.96TeV utilizing 425pb-1 of data collected with the D0 detector at the Fermilab Tevatron Collider. We consider the final state of the top quark pair containing one high-pT electron or muon and at least four j...
Evidence for production of single top quarks
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2022-04-28T20:42:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-07-14; We present first evidence for the production of single top quarks in the D0 detector at the Fermilab Tevatron pp̄ collider. The standard model predicts that the electroweak interaction can produce a top quark together with an antibottom quark or light quark, without the antiparticle top-quark partner th...
Measurement of the polarization of the Υ(1S) and Υ(2S) states in pp̄ collisions...
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2022-04-28T20:45:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-10-31; Science and Technology Facilities Council; We present a study of the polarization of the Υ(1S) and Υ(2S) states using a 1.3fb-1 data sample collected by the D0 experiment in 2002-2006 during run II of the Fermilab Tevatron Collider. We measure the polarization parameter α=(σT-2σL)/(σT+2σL), where σT and...
Direct measurement of the W boson width
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2022-04-28T20:58:08Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-12-04; Science and Technology Facilities Council; We present a direct measurement of the width of the W boson using the shape of the transverse mass distribution of W→eν candidate events. Data from approximately 1fb-1 of integrated luminosity recorded at s=1.96TeV by the D0 detector at the Fermilab Tevatron pp...
Combined Tevatron upper limit on gg→H→W+W- and constraints on the Higgs boson m...
Aaltonen, T.; Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Adelman, J.; Aguilo, E.; Alexeev, G. D.; Alkhazov, G.Made available in DSpace on 2022-04-28T21:21:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-07-15; Science and Technology Facilities Council; We combine results from searches by the CDF and D0 collaborations for a standard model Higgs boson (H) in the process gg→H→W+W - in pp̄ collisions at the Fermilab Tevatron Collider at √s=1.96TeV. With 4.8fb-1 of integrated luminosity analyzed at CDF and 5.4fb-1...
Combination of tevatron searches for the standard model Higgs Boson in the W+ W...
Aaltonen, T.; Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Adelman, J.; Aguilo, E.; Alexeev, G. D.; Alkhazov, G.Made available in DSpace on 2022-04-28T21:37:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-12; Science and Technology Facilities Council; We combine searches by the CDF and D0 Collaborations for a Higgs boson decaying to W+W-. The data correspond to an integrated total luminosity of 4.8 (CDF) and 5.4 (D0) fb-1 of pp̄ collisions at √s=1.96TeV at the Fermilab Tevatron collider. No excess is observe...
Study of direct CP violation in B-+/--> J/psi K-+/-(pi(+/-)) decays
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2020-12-10T18:08:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-05-30; We present a search for direct CP violation in B-+/- -> J/psi K-+/- (pi(+/-)) decays. The event sample is selected from 2: 8 fb(-1) of p (p) over bar collisions recorded by D0 experiment in run II of the Fermilab Tevatron Collider. The charge asymmetry A(CP)(B+ -> J/psi K+) = +0: 0075 +/- 0: 0061(stat) ...
Observation of the B-c meson in the exclusive decay B-c -> J/psi pi
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.; Alkhazov, G.; Alton, A.Made available in DSpace on 2020-12-10T18:08:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-07-04; A fully reconstructed B-c -> J/psi pi signal is observed with the D0 detector at the Fermilab Tevatron p (p) over bar collider using 1.3 fb(-1) of integrated luminosity. The signal consists of 54 +/- 12 candidates with a significance that exceeds 5 standard deviations, and confirms earlier observations ...