Download or read book Hadronic Production of J psi at Large chi sub F in 800 GeV P Cu and P Be Collisions written by and published by . This book was released on 1992 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differential cross-section d[sigma]/dx[sub F] for J/[psi] production in 800 GeV proton-nucleus collisions has been measured in the kinematic range 0.30 [le] x[sub F] [le] 0.95 and x[sub F] [lt] p[perpendicular] [lt] 5 GeV through the decay mode J/[psi] [yields] [mu][sup +][mu][sup [minus]]. The nuclear dependence of J/[psi] production over this range was measured using copper and beryllium targets. The differential cross sections are in good agreement with the predictions of the symbolical parton duality model. The data show no evidence for an intrinsic charm component in the proton. The ratio of the differential cross sections for copper and beryllium shows a suppression of J/[psi] production in copper which increases with increasing x[sub F].
Download or read book Hadronic Production of J Psi at Large Chi F in 800 GeV P Cu and P Be Collisions written by Matthew Scott Kowitt and published by . This book was released on 1992 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hadronic Production of J at Large F in 800 GeV P Cu and P Be Collisions written by and published by . This book was released on 1992 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book J psi Production at High Transverse Momenta in P p and Cu Cu Collisions at Sqrt SNN written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The STAR collaboration at RHIC presents measurements of J/[psi] → e+e− at mid-rapidity and high transverse momentum (p{sub T} > 5 GeV/c) in p+p and central Cu+Cu collisions at √sNN = 200 GeV. The inclusive J/[psi] production cross section for Cu+Cu collisions is found to be consistent at high p{sub T} with the binary collision-scaled cross section for p+p collisions, in contrast to previous measurements at lower p{sub T}, where a suppression of J/[psi] production is observed relative to the expectation from binary scaling. Azimuthal correlations of J/[psi] with charged hadrons in p+p collisions provide an estimate of the contribution of B-meson decays to J/[psi] production of 13% ± 5%.
Download or read book Hadronic Production of J written by and published by . This book was released on 1992 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differential cross-section d[sigma]/dx[sub F] for J/[psi] production in 800 GeV proton-nucleus collisions has been measured in the kinematic range 0.30 [le] x[sub F] [le] 0.95 and x[sub F] [lt] p[perpendicular] [lt] 5 GeV through the decay mode J/[psi] [yields] [mu][sup +][mu][sup [minus]]. The nuclear dependence of J/[psi] production over this range was measured using copper and beryllium targets. The differential cross sections are in good agreement with the predictions of the symbolical parton duality model. The data show no evidence for an intrinsic charm component in the proton. The ratio of the differential cross sections for copper and beryllium shows a suppression of J/[psi] production in copper which increases with increasing x[sub F].
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1993 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Production of J Psi in 800 GeV c P Si Interactions written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on the analysis of high mass opposite sign dimuon states produced in pSi interactions at √s = 38.7 GeV. These data have been collected with an open geometry fixed target spectrometer in the Fermilab Experiment E771. J/[psi] and [psi](2S) total cross section sand J/[psi] x{sub f} and p{sub t} differential cross sections have been measured and compared with extrapolations from data at lower energies. Evidence for [Upsilon] meson production is also presented.
Download or read book An Open geometry Experiment to Study J psi Production in Proton nucleus Collisions at 800 GeV C written by Paul A. Draper and published by . This book was released on 1987 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the J psi Meson and B hadron Production Cross Sections in P Anti p Collisions at S NN 1 2 written by and published by . This book was released on 2004 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a new measurement of the inclusive and differential production cross sections of J/[psi] mesons and b-hadrons in proton-antiproton collisions at √s = 1960 GeV. The data correspond to an integrated luminosity of 39.7 pb−1 collected by the CDF Run II detector. We find the integrated cross section for inclusive J/[psi] production for all transverse momenta from 0 to 20 GeV/c in the rapidity range
Download or read book The Production of J psi and Associated Particles in the Collision of 530 GeV c Protons and Pions with Nuclear Targets written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the production of the J/? and associated particles using the E672/E706 spectrometer at Fermilab. Preliminary results are presented from the first run in 1987--1988 with 530 GeV/c p/? and ?/sup −/ beams on a variety of nuclear targets. The A-dependance of J/? production with /pi//sup /minus// beam was found to agree with an A/sup ?/ parametrization with /alpha/ = 0.85 /plus minus/ 0.06 for X/sub F/ > 0.1. We have found that (41 /plus minus/ 22)% of the J//psi/'s produced in the p//pi//sup +/ beam are consistent with the radiative decay /chi/ /yields/J//psi/+?. The future analysis goals of the experiment are also discussed. 10 refs., 9 figs.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book J Psi And Psi Prime Production with 800 GeV Protons written by and published by . This book was released on 1990 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inclusive chi sub C Production in bar P p Collisions at radical written by and published by . This book was released on 1992 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the full reconstruction of X, mesons through the decay chain [chi][sub c] [yields] J/[psi][gamma], J/[psi] [yields] [mu][sup +][mu][sup [minus]], using data obtained at the Collider Detector at Fermilab in [bar p]p collisions at [radical]s = 1.8 TeV. This sample, the first observed at a hadron collider, is then used to measure the [chi][sub s] meson production cross section times branching fractions. We obtain [sigma] [center dot] Br = 3.2 [plus minus] 0.4(stat) [plus minus] 1.1(syst) nb for [chi][sub s], mesons with P[sub T]> T.0 GeV/c[sup 2] and pseudorapidity [vert bar][eta][vert bar]
Download or read book J psi Production in P anti P Collisions At radical written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have studied J/[psi] production in p[anti p] collisions at[radical]s= 1.8 TeV with the D0 detector at Fermilab, using a[mu][sup+][mu][sup[minus]] data sample corresponding to an integrated luminosity of 13 pb[sup[minus]1]. They have measured the inclusive J/[psi] production cross section as a function of J/[psi] transverse momentum p[sub T]. For the kinematic range p[sub T]> 8 GeV/c and[vert-bar][eta][vert-bar]
Download or read book J PSI Production Via Chi Sub C Decays in Fixed Target Proton nucleus Collisions written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decades, the mechanism of production of heavy quarkonium states has been the subject of research efforts involving both theoretical and experimental developments. Even though the predictions of the presently accepted models differ, the amount of experimental data does not allow for a determination of the best suited theory. The particular case of charmonium production in hadron collisions is an attractive test case as the charm is heavy enough to allow for perturbative calculations of the production process, and yet the cross sections involved are large enough so that events can be measured with good statistics. The data collected at the HERA-B detector after the HERA-II upgrade is analyzed and used to estimate the fraction of J/Psi produced via radiative Chi sub c decays. The result is compared to theoretical predictions and it is found to agree with calculations based on the color evaporation model and with the calculations using the non-relativistic quantum chromodynamics model.
Download or read book Production of J Psi From chi sub C Decays at CDF written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have measured the fraction of J/[psi] originating from[chi][sub c] states in p[bar p] collisions at[radical]s= 1.8 TeV in four bins of J/[psi] P[sub T]. The fraction in the inclusive CDF J/[psi] sample with P[sub T][sup J/[psi]]> 4.0 GeV/c and[vert-bar][eta][sup J/[psi]][vert-bar]
