Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
J Psi Production At High Transverse Momenta In P P And Cu Cu Collisions At Sqrt Snn
Download J Psi Production At High Transverse Momenta In P P And Cu Cu Collisions At Sqrt Snn full books in PDF, epub, and Kindle. Read online J Psi Production At High Transverse Momenta In P P And Cu Cu Collisions At Sqrt Snn ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis J/psi Production at High Transverse Momenta in P+p and Cu+Cu Collisions at Sqrt SNN by :
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%.
Book Synopsis Measurement of Prompt $J/\psi$ Pair Production in Pp Collisions at $ \sqrt{s} $ by :
Download or read book Measurement of Prompt $J/\psi$ Pair Production in Pp Collisions at $ \sqrt{s} $ written by and published by . This book was released on 2014 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production of prompt J/[psi] meson pairs in proton-proton collisions at √s = 7 TeV is measured with the CMS experiment at the LHC in a data sample corresponding to an integrated luminosity of about 4.7 fb-1. The two J/[psi] mesons are fully reconstructed via their decays into [mu] + [mu] - pairs. This observation provides for the first time access to the high-transverse-momentum region of J/[psi] pair production where model predictions are not yet established. The total and differential cross sections are measured in a phase space defined by the individual J/[psi] transverse momentum (p T J/[psi] ) and rapidity (
Book Synopsis Prompt and Non-prompt J/psi Production in Pp Collisions at Sqrt(s) by :
Download or read book Prompt and Non-prompt J/psi Production in Pp Collisions at Sqrt(s) written by and published by . This book was released on 2011 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of J/psi mesons is studied in pp collisions at sqrt(s)=7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 inverse nanobarns. The J/psi differential cross section is determined, as a function of the J/psi transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/psi) component. Integrated over J/psi transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range.
Book Synopsis J/psi and Psi(2S) Production in Pp Collisions at Sqrt(s) by :
Download or read book J/psi and Psi(2S) Production in Pp Collisions at Sqrt(s) written by and published by . This book was released on 2012 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of the J/psi and psi(2S) production cross sections in pp collisions at sqrt(s)=7 TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 inverse picobarns. Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B to psi(2S) X decay is extracted from the ratio of the non-prompt cross sections to be: BR(B to psi(2S) X) = (3.08 +/- 0.12(stat.+syst.) +/- 0.13(theor.) +/- 0.42(BR[PDG])) 10-̂3.
Book Synopsis Measurement of the Prompt Double J/psi Production Cross Section in Pp Collisions at Sqrt(s) by : Andrew David York
Download or read book Measurement of the Prompt Double J/psi Production Cross Section in Pp Collisions at Sqrt(s) written by Andrew David York and published by . This book was released on 2013 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The simultaneous production of two J/psi mesons has been significantly observed in proton-proton collisions at a center-of-mass energy of 7 TeV with the CMS detector. The two J/psi mesons are fully reconstructed in their decay to muons. The signal yield is extracted with an extended maximum likelihood fit based on four event variables. A method was developed to correct for detector acceptances and efficiencies based on the measured momenta of the J/psi and their decay muons to maintain the least model dependence possible. The measurement is performed in an acceptance region defined by the individual J/psi transverse momentum and rapidity. From the measured signal yield of 446 events corresponding to an integrated luminosity of 4:7 inverse femtobarn. The total cross section is found to be 1:49 nanobarn, with 0:07 statistical and 0:13 nb systematic error, and unpolarizaed production was assumed. Most predictions for particle production at the LHC assume dominance of single parton interaction for proton-proton collisions, which can be tested with the final state measured in this analysis. The differential cross section is measured in bins of the double J/psi invariant mass, the double J/psi transverse momentum, and the absolute difference in rapidity of the two J/psi. The reconstruction of the four charged muon trajectories heavily relies on the Pixel subdetector located close to the beampipe. Systematic studies with cosmic muons and tracks from collision events are presented. The development of the Pixel RawToDigi package, data quality monitoring packages, commissioning studies of Pixel data and tracks in first collisions, and realistic simulations of decay signals in the pixel subdetector were all performed as a part of this dissertation work.
Book Synopsis Measurement of Prompt and Nonprompt J/psi Production in Pp and PPb Collisions at Sqrt(s[NN] by :
Download or read book Measurement of Prompt and Nonprompt J/psi Production in Pp and PPb Collisions at Sqrt(s[NN] written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reports the measurement of J/psi meson production in proton-proton (pp) and proton-lead (pPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV by the CMS experiment at the LHC. The data samples used in the analysis correspond to integrated luminosities of 28 inverse picobarns and 35 inverse nanobarns for pp and pPb collisions, respectively. Prompt and nonprompt J/psi mesons, the latter issuing from the decay of B mesons, are measured in their dimuon decay channels. Differential cross sections are measured in the transverse momentum range of 2
Book Synopsis Pi 0 Production at High Transverse Momenta from Pi − Collisions at 520 GeV/c on Be and Cu Targets by : Nikos Varelas
Download or read book Pi 0 Production at High Transverse Momenta from Pi − Collisions at 520 GeV/c on Be and Cu Targets written by Nikos Varelas and published by . This book was released on 1994 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identified High-pT Spectra in Cu+Cu Collisions at Sqrt SNN by :
Download or read book Identified High-pT Spectra in Cu+Cu Collisions at Sqrt SNN written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3
Book Synopsis J/Psi -] E+e- Measurements in Cu + Cu Collisions at 200 GeV by : Kushal Das
Download or read book J/Psi -] E+e- Measurements in Cu + Cu Collisions at 200 GeV written by Kushal Das and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: J/Psi production has been measured by the PHENIX experiment, one of the two major experiments at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) in p + p, d + Au, Au + Au and Cu + Cu collisions at the center of mass energy per nucleon (sqrt {s_{NN}}) of 200 GeV. The analysis of the Cu + Cu data is the focus of this dissertation.
Book Synopsis Suppression and Azimuthal Anisotropy of Prompt and Nonprompt $J/\psi$ Production in PbPb Collisions at $\sqrt{s_{NN}}$ by :
Download or read book Suppression and Azimuthal Anisotropy of Prompt and Nonprompt $J/\psi$ Production in PbPb Collisions at $\sqrt{s_{NN}}$ written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The nuclear modification factor ${R_{\mathrm{AA}}} $ and the azimuthal anisotropy coefficient ${v_{2}} $ of prompt and nonprompt (i.e. those from decays of b hadrons) $\mathrm{J}/\psi$ mesons, measured from PbPb and pp collisions at $\sqrt{s_{\mathrm{NN}}} = $ 2.76 TeV at the LHC, are reported. The results are presented in several event centrality intervals and several kinematic regions, for transverse momenta $p_{\mathrm{T}}> $ 6.5 GeV/$c$ and rapidity $
Book Synopsis Measurement of the Prompt J/Psi Pair Production Cross Section in Pp Collisions at Sqrt(s) by : Grant Valentine Riley
Download or read book Measurement of the Prompt J/Psi Pair Production Cross Section in Pp Collisions at Sqrt(s) written by Grant Valentine Riley and published by . This book was released on 2017 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cross section for the prompt production of [J/Psi] meson pairs in proton-proton collisions at √ s[sqrt(s)] = 8 TeV at the LHC from a sample corresponding to an integrated luminosity of 20.2±0.5 fb−1 [inverse femtobarns] has been measured with the CMS detector. It provides unique insight into particle production and proton structure in proton-proton (pp) collisions. The two [J/Psi] mesons are fully reconstructed in their [mu+ mu-] decay. An acceptance region is defined by the individual [J/Psi] transverse momentum p [J/Psi pT] and rapidity y [J/Psi Rapidity]. The total fiducial cross section assuming unpolarized prompt [J/Psi] pair production is found to be [sigma_fid] = 195.7 ± 11.1 (stat) ± 22.1 (syst) ± 5.1 (lumi) ± 2.3 (BF) pb. The differential cross sections for prompt [J/Psi] pair production within this acceptance region are measured in eight event variables. Most predictions for particle production in pp collisions at the LHC assume dominance of single parton (gluon, quark) interactions (SPS) at the leading order perturbation theory. This assumption is tested with the final state measured in this analysis. Significant contributions from next-to-leading order processes and double parton scattering (DPS) are observed. In addition, the single [J/Psi] production cross section is estimated from theory and measured with pp collision data. Single [J/Psi] production is compared to the pair production via DPS and quantified via an effective cross section. This quantity is further compared to several particle pair production processes. In particular, the [J/Psi] pair production probes the contributions of gluons. All particle production measurements with CMS depend on the precise knowledge of the LHC luminosity. A detector, the Pixel Luminosity Telescope, based on solid state technology is used to count charged particle tracks from pp collisions, a measure of the instantaneous luminosity. The measurement is provided online for every crossing of the LHC beams. Tests of sensors and the development work for the detector are presented.
Book Synopsis Inclusive, Prompt and Non-prompt J/[psi] Production at Mid-rapidity in Pb-Pb Collisions at $ \sqrt{s_{\mathrm{NN}}} by :
Download or read book Inclusive, Prompt and Non-prompt J/[psi] Production at Mid-rapidity in Pb-Pb Collisions at $ \sqrt{s_{\mathrm{NN}}} written by and published by . This book was released on 2015 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, the transverse momentum (pT) dependence of the nuclear modification factor RAA and the centrality dependence of the average transverse momentum pT for inclusive J/[psi] have been measured with ALICE for Pb-Pb collisions at √sNN=2.76 TeV in the e+e- decay channel at mid-rapidity (
Book Synopsis J/psi Production in Au-Au Collisions at Square Root (s/sub NN) by :
Download or read book J/psi Production in Au-Au Collisions at Square Root (s/sub NN) written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the first J/psi production analysis of Au+Au reactions at forward rapidity at [square root]sNN = 200 GeV. In the second year of RHIC running, design energy was achieved in the collisions of both Au+Au ions and proton+proton reactions. The production of the J/psi is measured by the PHENIX experiment in Au+Au collisions as well as in proton-proton collisions. The scientific goal is to investigate the nature of hot, dense nuclear matter capitalizing on the unique properties of the J/psi as a probe of this matter. Recent experimental results by the NA50 collaboration at CERN strongly deviate from the conventional picture that successfully describes data at lower energies. The importance of such a measurement is demonstrated by the wide spectrum of theoretical explanations concerning the existing data. The merits of these models will be explored in a systematic and comprehensive study of the J/psi and open charm in collisions of a variety of species and energy. A survey of the theoretical models is presented and the relevant open charm and J/psi PHENIX measurements are compared.
Book Synopsis Centrality Dependence of Inclusive J/[psi] Production in P-Pb Collisions at $ \sqrt{s_{\mathrm{NN}}} by :
Download or read book Centrality Dependence of Inclusive J/[psi] Production in P-Pb Collisions at $ \sqrt{s_{\mathrm{NN}}} written by and published by . This book was released on 2015 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, we present a measurement of inclusive J/[Psi] production in p-Pb collisions at √SNN = 5.02 TeV as a function of the centrality of the collision, as estimated from the energy deposited in the Zero Degree Calorimeters. We also performed this measurement with the ALICE detector down to zero transverse momentum, pT, in the backward (-4.46
Book Synopsis Particle Ratios at High Transverse Momentum in Pp Collisions At. Sqrt. S by :
Download or read book Particle Ratios at High Transverse Momentum in Pp Collisions At. Sqrt. S written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of identified charged particles in pp collisions at .sqrt.s = 63 GeV with an identified high p/sub T/ trigger particle emitted in the central region is studied. The measurements were performed at the CERN ISR using the Axial Field Spectrometer. Trigger particle ratios, sigma(.pi./sup + -/)/ sigma(all/sup + -/), sigma(K/sup + -/) and sigma(p/sup + -/)/sigma(all/sup + -/) are presented for p/sub T/ from 5 GeV/c to 8 GeV/c. In addition sigma(.pi./sup + -/)/sigma(all/sup + -/) is presented in the p/sub T/ region from 2.5 GeV/c to 4.5 GeV/c. The charge compensation in the hemisphere containing the trigger particle is shown to depend strongly on the identity of the trigger particle and on the identity of the associated particles. 13 references.
Book Synopsis Signatures of Absorption Mechanisms for J[psi] And[psi]' Production in High Energy Heavy-Ion Collisions by :
Download or read book Signatures of Absorption Mechanisms for J[psi] And[psi]' Production in High Energy Heavy-Ion Collisions written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: J/psi and psi' produced in high-energy heavy-ion collisions are absorbed by their collisions with nucleons and produced soft particles, leading to two distinct absorption mechanisms. The signature of absorption by produced soft particles, as revealed by psi' production data, consists of a gap and a change of the slope in going from the pA line to the nucleus-nucleus line when we make a semi-log plot of the survival probability as a function of the path length. Using this signature, we find from the J/psi production data in pA, O-Cu, O-U, and S-U collisions that the degree of J/psi absorption by produced soft particles is small and cannot account for the J/psi data in Pb-Pb collisions. The anomalous suppression of J/psi production in Pb-Pb collisions can be explained as due to the occurrence of a new phase of strong J/psi absorption, which sets in when the local energy density exceeds about 3.4 GeV/fm3. To probe the chemical content of the new phase, we propose to study the abundance of open-charm mesons and charm hyperons which depends sensitively on the quark chemical potential.
Book Synopsis Production of Leading Charged Particles and Leading Charged-particle Jets at Small Transverse Momenta in Pp Collisions at $\sqrt{s}$ by :
Download or read book Production of Leading Charged Particles and Leading Charged-particle Jets at Small Transverse Momenta in Pp Collisions at $\sqrt{s}$ written by and published by . This book was released on 2015 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The per-event yield of the highest transverse momentum charged particle and charged-particle jet, integrated above a given pminT threshold starting at pminT=0.8 and 1 GeV, respectively, is studied in pp collisions at s√=8 TeV. Furthermore, the particles and the jets are measured in the pseudorapidity ranges.
![Download Measurement of Prompt and Nonprompt J/psi Production in Pp and PPb Collisions at Sqrt(s[NN] PDF Online Free](https://books.google.com/books/content/images/frontcover/4xwbuAEACAAJ?fife=w200-h370)
![Download J/Psi -] E+e- Measurements in Cu + Cu Collisions at 200 GeV PDF Online Free](https://books.google.com/books/content/images/frontcover/qaAOkAEACAAJ?fife=w200-h370)
![Download Inclusive, Prompt and Non-prompt J/[psi] Production at Mid-rapidity in Pb-Pb Collisions at $ \sqrt{s_{\mathrm{NN}}} PDF Online Free](https://books.google.com/books/content/images/frontcover/UuFnwAEACAAJ?fife=w200-h370)
![Download Centrality Dependence of Inclusive J/[psi] Production in P-Pb Collisions at $ \sqrt{s_{\mathrm{NN}}} PDF Online Free](https://books.google.com/books/content/images/frontcover/aNBCwAEACAAJ?fife=w200-h370)
![Download Signatures of Absorption Mechanisms for J[psi] And[psi]' Production in High Energy Heavy-Ion Collisions PDF Online Free](https://books.google.com/books/content/images/frontcover/Bl7jjwEACAAJ?fife=w200-h370)
