268 documents found, page 1 of 27

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Measurement of the tt̄ 1.96 TeV i pp̄ collisions at √s = 1.96 TeV in dilepton f...

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:00:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-10-01; Universidad de Buenos Aires; LAFEX Centro Brasileiro de Pesquisas Físicas; Universidade do Estado do Rio de Janeiro; Instituto de Física Teórica Universidade Estadual Paulista; University of Alberta; Simon Fraser University; York University; McGill University; Institute of High Energy Physics; Universit...

Date: 2022   |   Origin: Oasisbr

Search for right-handed W bosons in top quark decay

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:01:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-07-01; We present a measurement of the fraction f+ of right-handed W bosons produced in top quark decays, based on a candidate sample of tt̄ events in the lepton+jets decay mode. These data correspond to an integrated luminosity of 230pb-1, collected by the D0 detector at the Fermilab Tevatron pp̄ Collider at ...

Date: 2022   |   Origin: Oasisbr

Search for Randall-Sundrum gravitons in dilepton and diphoton final states

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:02:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-08-26; We report the first direct search for the Kaluza-Klein (KK) modes of Randall-Sundrum gravitons using dielectron, dimuon, and diphoton events observed with the D0 detector operating at the Fermilab Tevatron pp̄ Collider at s=1.96TeV. No evidence for resonant production of gravitons has been found in the ...

Date: 2022   |   Origin: Oasisbr

Study of Zγ events and limits on anomalous ZZγ and Zγγ couplings in pp̄ collisi...

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:02:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-07-29; We present a measurement of the Zγ production cross section and limits on anomalous ZZγ and Zγγ couplings for form-factor scales of Λ=750 and 1000 GeV. The measurement is based on 138 (152) candidates in the eeγ (μμγ) final state using 320(290)pb-1 of pp̄ collisions at s=1.96TeV. The 95% C.L. limits on ...

Date: 2022   |   Origin: Oasisbr

Measurement of inclusive differential cross sections for Υ(1S) production in pp...

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:03:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-06-17; We present measurements of the inclusive production cross sections of the Υ(1S) bottomonium state in pp̄ collisions at s=1.96TeV. Using the Υ(1S)→μ+μ- decay mode for a data sample of 159±10pb-1 collected by the D0 detector at the Fermilab Tevatron collider, we determine the differential cross sections a...

Date: 2022   |   Origin: Oasisbr

Measurement of the W+W- production cross section in pp̄ collisions at s=1.96TeV...

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:04:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-06-03; We present a measurement of the W+W- production cross section using 184pb-1 of pp̄ collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W+W-→ℓ+νℓ-ν̄, where the charged leptons can be either electrons or muons, we find 17 can...

Date: 2022   |   Origin: Oasisbr

Measurement of semileptonic branching fractions of B mesons to narrow D** states

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:04:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-10-21; Using the data accumulated in 2002-2004 with the D0 detector in proton-antiproton collisions at the Fermilab Tevatron collider with a center-of-mass energy of 1.96 TeV, the branching fractions of the decays Bâ†'DÂ10(2420)Î+ÎÎX and Bâ†'DÂ2*0(2460)Î+ÎÎX and their ratio have been measured: B(bÂâ†'B)Ã- B(B...

Date: 2022   |   Origin: Oasisbr

Production of WZ events in pp collisions at s=1.96TeV and limits on anomalous W...

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:04:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-09-30; We present results from a search for WZ production with subsequent decay to â.,Îâ.,â€â., Ââ€(â., and â.,â€=e or Î) using 0.30fb-1 of data collected by the D0 experiment between 2002 and 2004 at the Fermilab Tevatron. Three events with WZ decay characteristics are observed. With an estimated background o...

Date: 2022   |   Origin: Oasisbr

Search for supersymmetry via associated production of charginos and neutralinos...

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:05:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-10-07; A search for associated production of charginos and neutralinos is performed using data recorded with the D0 detector at a pp» center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider. This analysis considers final states with missing transverse energy and three charged leptons, of which at l...

Date: 2022   |   Origin: Oasisbr

Measurement of the lifetime difference in the Bs0 system

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahn, S. H.; Ahsan, M.; Alexeev, G. D.

Made available in DSpace on 2022-04-28T20:05:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-10-21; We present a study of the decay Bs0â†'J/ÏÏ•. We obtain the CP-odd fraction in the final state at time zero, R⚥=0.16±0.10(stat)±0.02(syst), the average lifetime of the (Bs0, BÂs0) system, Ï.,Â(Bs0)=1.39- 0.16+0.13(stat)-0.02+0.01(syst)ps, and the relative width difference between the heavy and light ...

Date: 2022   |   Origin: Oasisbr

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