84 documents found, page 1 of 9
Measurement of the differential cross section dσ/dt in elastic pp̄ scattering a...
Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Alverson, G.; Alves, G. A.; Aoki, M.Made available in DSpace on 2022-04-28T18:57:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-07-27; We present a measurement of the elastic differential cross section dσ(pp̄→pp̄)/dt as a function of the four-momentum-transfer squared t. The data sample corresponds to an integrated luminosity of ≈31nb -1 collected with the D0 detector using dedicated Tevatron pp̄ Collider operating conditions at √s=1.9...
Search for anomalous top-quark couplings with the D0 detector
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 2022-04-28T20:50:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-03-02; Science and Technology Facilities Council; Anomalous Wtb couplings modify the angular correlations of the top-quark decay products and change the single top-quark production cross section. We present limits on anomalous top-quark couplings by combining information from W boson helicity measurements in t...
Measurement of γ+b+X and γ+c+X production cross sections in pp̄ collisions at s...
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 2022-04-28T20:51:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-05-11; Science and Technology Facilities Council; First measurements of the differential cross sections d3σ/ (dpTγdyγdyjet) for the inclusive production of a photon in association with a heavy quark (b, c) jet are presented, covering photon transverse momenta 30<pTγ<150GeV, photon rapidities |yγ|<1.0, jet rapi...
Measurement of the Zγ→νν̄γ Production Cross Section and Limits on Anomalous ZZγ...
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 2022-04-28T20:51:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-05-18; We present the first observation of the Zγ→νν̄γ process at the Fermilab Tevatron at 5.1standard deviations significance, based on 3.6fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron pp̄ Collider at s=1.96TeV. The measured Zγ production cross section multiplied by the...
Search for resonant diphoton production with the D0 detector
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 2022-04-28T20:52:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-06-12; Science and Technology Facilities Council; We present a search for a narrow resonance in the inclusive diphoton final state using ∼2.7fb-1 of data collected with the D0 detector at the Fermilab Tevatron pp̄ Collider. We observe good agreement between the data and the background prediction, and set the f...
Search for the standard model Higgs boson in tau final states
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 2022-04-28T20:52:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-06-25; Science and Technology Facilities Council; We present a search for the standard model Higgs boson using hadronically decaying tau leptons, in 1fb-1 of data collected with the D0 detector at the Fermilab Tevatron pp̄ collider. We select two final states: τ± plus missing transverse energy and b jets, and ...
Search for next-to-minimal supersymmetric higgs bosons in the h→aa→μμμμ, μμττ c...
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 2022-04-28T20:54:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-08-04; We report on a first search for production of the lightest neutral CP-even Higgs boson (h) in the next-to-minimal supersymmetric standard model, where h decays to a pair of neutral pseudoscalar Higgs bosons (a), using 4.2fb-1 of data recorded with the D0 detector at Fermilab. The a bosons are required t...
Search for dark photons from supersymmetric hidden valleys
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 2022-04-28T20:54:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-08-17; We search for a new light gauge boson, a dark photon, with the D0 experiment. In the model we consider, supersymmetric partners are pair produced and cascade to the lightest neutralinos that can decay into the hidden sector state plus either a photon or a dark photon. The dark photon decays through its ...
Observation of single top-quark production
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 2022-04-28T20:55:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-08-24; We report observation of the electroweak production of single top quarks in pp̄ collisions at s=1.96TeV based on 2.3fb-1 of data collected by the D0 detector at the Fermilab Tevatron Collider. Using events containing an isolated electron or muon and missing transverse energy, together with jets originat...
Measurement of trilinear gauge boson couplings from WW+WZ→lνjj events in pp̄ co...
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 2022-04-28T20:55:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-09-23; Science and Technology Facilities Council; We present a direct measurement of trilinear gauge boson couplings at γWW and ZWW vertices in WW and WZ events produced in pp̄ collisions at s=1.96TeV. We consider events with one electron or muon, missing transverse energy, and at least two jets. The data were...