751 documents found, page 1 of 76
Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Productio...
Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Agnew, J. P.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Amerio, S.Made available in DSpace on 2022-04-28T19:07:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-24; The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiprot...
Tevatron Run II combination of the effective leptonic electroweak mixing angle
Aaltonen, T.; Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Agnew, J. P.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Amerio, S.Made available in DSpace on 2022-04-28T19:09:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-06-28; Ministry of Education and Science of the Russian Federation; Russian Foundation for Basic Research; Drell-Yan lepton pairs produced in the process pp→â.,+â.,-+X through an intermediate γ∗/Z boson have an asymmetry in their angular distribution related to the spontaneous symmetry breaking of the electrow...
Measurement of the σ- charge radius by σ--electron elastic scattering
Eschrich, I.; Krüger, H.; Simon, J.; Vorwalter, K.; Alkhazov, G.; Atamantchouk, A. G.; Balatz, M. Y.; Bondar, N. F.; Cooper, P. S.; Dauwe, L. J.Made available in DSpace on 2022-04-28T19:55:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2001-12-13; The σ- mean squared charge radius has been measured in the space-like Q2 range 0.035-0.105 GeV2/c2 by elastic scattering of a σ- beam off atomic electrons. The measurement was performed with the SELEX (E781) spectrometer using the Fermilab hyperon beam at a mean energy of 610 GeV/c. We obtain (rch2σ- = ...
Production asymmetry of Ds from 600 GeV/c σ- and π- beam
Kaya, M.; Alkhazov, G.; Atamantchouk, A. G.; Balatz, M. Y.; Bondar, N. F.; Cooper, P. S.; Dauwe, L. J.; Davidenko, G. V.; Dersch, U.; Dolgolenko, A. G.Made available in DSpace on 2022-04-28T19:55:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-04-10; The production of Ds- relative to Ds+ as a function of xF with 600 GeV/c Σ- beam is measured in the interval 0.15 < xF < 0.7 by the SELEX (E781) experiment at Fermilab. The integrated charge asymmetries with 600 GeV/c Σ- beam (0.53 ± 0.06) and π- beam (0.06 ± 0.11) are also compared. The results show th...
Total cross section measurements with π- , Σ- and protons on nuclei and nucleon...
Dersch, U.; Akchurin, N.; Andreev, V. A.; Atamantchouk, A. G.; Aykac, M.; Balatz, M. Y.; Bondar, N. F.; Bravar, A.; Cooper, P. S.; Dauwe, L. J.Made available in DSpace on 2022-04-28T19:56:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2000-07-17; Total cross sections for Σ- and π- on beryllium, carbon, polyethylene and copper as well as total cross sections for protons on beryllium and carbon have been measured in a broad momentum range around 600GeV/c . These measurements were performed with a transmission technique in the SELEX hyperon-beam ex...
Observation of the cabibbo-suppressed decay Ξ+c→pK- π+
Jun, S. Y.; Akchurin, N.; Andreev, V. A.; Atamantchouk, A. G.; Aykac, M.; Balatz, M. Y.; Bondar, N. F.; Bravar, A.; Cooper, P. S.; Dauwe, L. J.Made available in DSpace on 2022-04-28T19:53:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2000-01-01; We report the first observation of the Cabibbo-suppressed charm baryon decay Ξ+c→pK- π+. We observe 150±22±5 events for the signal. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600GeV/c Σ- beam. The branching fractions of the de...
Searches for new physics using the tt̄ invariant mass distribution in pp collis...
Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.Made available in DSpace on 2022-04-29T08:49:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-11-21; Searches for anomalous top quark-antiquark production are presented, based on pp collisions at √s=8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb-1, were collected with the CMS detector at the LHC. The observed tt̄ invariant mass spectrum is found to be compatible with the standard...
Search for top squarks in r-parity-violating supersymmetry using three or more ...
Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.Made available in DSpace on 2022-04-29T09:00:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-11-25; National Natural Science Foundation of China; Deutsche Forschungsgemeinschaft; Department of Atomic Energy, Government of India Technology; U.S. Department of Energy; National Science Foundation; A search for anomalous production of events with three or more isolated leptons and bottom-quark jets produc...
Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at ...
Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.Made available in DSpace on 2022-04-29T09:12:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-12-23; Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7 TeV, correspond to an integrated luminosity of 5.0 fb-1. The individual rapidity distributions...
Search for the standard model Higgs boson produced in association with a W or a...
Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.Made available in DSpace on 2022-04-29T09:23:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-01-21; National Natural Science Foundation of China; Research Promotion Foundation; A search for the standard model Higgs boson (H) decaying to bb̄ when produced in association with a weak vector boson (V) is reported for the following channels: W(μν)H, W(eν)H, W(τν)H, Z(μμ)H, Z(ee)H, and Z(νν)H. The search is...