A Study of High Transverse Momentum Electrons Produced in Pp Collisions at 540 GeV.
Author: P. (CERN) Bagnaia
Publisher:
Published: 1984
Total Pages: 17
ISBN-13:
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Author: P. (CERN) Bagnaia
Publisher:
Published: 1984
Total Pages: 17
ISBN-13:
DOWNLOAD EBOOKAuthor: David Robinson
Publisher:
Published: 1988
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: David Robinson
Publisher:
Published: 1988
Total Pages: 306
ISBN-13:
DOWNLOAD EBOOKAuthor: J. Thanh Van Tran
Publisher: Atlantica Séguier Frontières
Published: 1984
Total Pages: 924
ISBN-13: 9782863320297
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Published: 1975
Total Pages:
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DOWNLOAD EBOOKThe previously reported observation of direct electrons produced in proton-proton collisions at the CERN ISR was extended to transverse moments, p*/ sub T/, as low as 0.6 GeV/c. The ratio of electron to pion cross sections seems to rise as p*/sub T/ is decreased. It increases by at most a factor of 2 between p*/sub T/ of 2 and 0.6 GeV/c. Results on the s-dependence of this ratio and on correlated charged particles are presented for p*/sub T/ greater than or equal to 1 GeV/c in another work. (auth).
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Publisher:
Published: 1994
Total Pages: 586
ISBN-13:
DOWNLOAD EBOOKSemiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Author: J. Thanh Van Tran
Publisher: Atlantica Séguier Frontières
Published: 1984
Total Pages: 684
ISBN-13: 9782863320280
DOWNLOAD EBOOKAuthor: Andre Sungho Yoon
Publisher:
Published: 2012
Total Pages: 284
ISBN-13:
DOWNLOAD EBOOKThe charged particle spectrum at large transverse momentum (PT), dominated by hadrons originating from parton fragmentation, is an important observable for studying the properties of the hot, dense medium produced in high-energy heavy-ion collisions. The study of the modifications of the PT spectrum in PbPb compared to pp collisions at the same collision energy can shed light on the detailed mechanism by which hard partons lose energy traversing the medium. In this thesis, the transverse momentum spectra of charged particles in pp and PbPb collisions at [square root of]Snn = 2.76 TeV measured up to PT = 100 GeV/c with the CMS experiment at the Large Hadron Collider (LHC) are presented. In the transverse momentum range PT = 5-10 GeV/c, the charged particle yield in the most central PbPb collisions is suppressed by up to a factor of 7 compared to the pp yield scaled by the number of incoherent nucleon-nucleon collisions. At higher PT, this suppression is significantly reduced, approaching roughly a factor of 2 for particles with PT in the range PT = 40-100 GeV/c. A simple modeling of the parton energy loss applied to the PYTHIA Monte-Carlo (MC) reveals that the charged particle spectrum with the pQCD-motivated fractional parton energy loss can describes the shape of the measured suppression well in the range PT = 5-100 GeV/c.
Author: J. Thanh Van Tran
Publisher: Atlantica Séguier Frontières
Published: 1984
Total Pages: 520
ISBN-13: 9782863320266
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Publisher:
Published: 1983
Total Pages:
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DOWNLOAD EBOOKThe 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.