147 documents found, page 1 of 15
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...
Transverse-momentum and pseudorapidity distributions of charged hadrons in pp c...
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.Made available in DSpace on 2022-04-28T21:02:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-07-06; Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at √s=7TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed cha...
First measurement of Bose-Einstein correlations in proton-proton collisions at ...
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.Made available in DSpace on 2022-04-28T21:11:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-07-13; Science and Technology Facilities Council; Bose-Einstein correlations have been measured using samples of proton-proton collisions at 0.9 and 2.36 TeV center-of-mass energies, recorded by the CMS experiment at the CERN Large Hadron Collider. The signal is observed in the form of an enhancement of pairs ...
Measurement of the Ds ± lifetime
Thomas, G. P.; Gülmez, E.; Edelstein, R.; Jun, S. Y.; Kulyavtsev, A. I.; Kushnirenko, A.; Mathew, P.; Mattson, M.; Procario, M.; Russ, J.Made available in DSpace on 2022-04-29T07:53:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2001-12-20; We report a precise measurement of the Ds± meson lifetime. The data were taken by the SELEX experiment (E781) spectrometer using 600 GeV/c ∑-, π- and p beams. The measurement has been done using 918 reconstructed Ds±. The lifetime of the Ds± is measured to be 472.5 ± 17.2 ± 6.6 fs, using K*(892)0K± and ...
Search for pair production of first-generation scalar leptoquarks in pp collisi...
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.Made available in DSpace on 2022-04-29T06:48:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-05-17; National Science Foundation; A search for pair production of first-generation scalar leptoquarks is performed in the final state containing two electrons and two jets using proton-proton collision data at √s=7TeV. The data sample used corresponds to an integrated luminosity of 33pb-1 collected with the ...
Search for pair production of second-generation scalar leptoquarks in pp collis...
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.Made available in DSpace on 2022-04-29T06:59:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-05-17; A search for pair production of second-generation scalar leptoquarks in the final state with two muons and two jets is performed using proton-proton collision data at √s=7TeV collected by the CMS detector at the LHC. The data sample used corresponds to an integrated luminosity of 34pb-1. The number of o...
Search for dijet resonances in 7 TeV pp collisions at CMS
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.Made available in DSpace on 2022-04-28T21:26:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-11-17; A search for narrow resonances in the dijet mass spectrum is performed using data corresponding to an integrated luminosity of 2.9pb⊃-1 collected by the CMS experiment at the Large Hadron Collider. Upper limits at the 95% confidence level are presented on the product of the resonance cross section, bran...