Download or read book A Study of Charged Particle Spectra in 158 GeV c Pb Pb Collisions written by Lachlan Andrew David Hill and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Identified Particle Spectra from DE dx Ionization Measurements in Pb Pb Collisions at 158 A GeV c written by Jason Warren Dunn and published by . This book was released on 1997 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of Charged particle Transverse Momentum Spectra in PbPb Collisions at square Root Of nn written by Eric Appelt and published by . This book was released on 2014 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of High Transverse Momentum Charged Particle Suppression in Heavy Ion Collisions at LHC written by Andre Sungho Yoon and published by . This book was released on 2012 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 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.

Download or read book Modification of K0s and Lambda AntiLambda Transverse Momentum Spectra in Pb Pb Collisions at sNN 2 76 TeV with ALICE written by Simone Schuchmann and published by Springer. This book was released on 2016-09-01 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis offers an excellent, comprehensive introduction to the physics of the quark–gluon plasma. It clearly explains the connection between theory and experiment, making the topic accessible to non-specialists in this field. The experimental work, which contributes significantly to our understanding of the quark–gluon plasma, is described in great detail. The results described in the final chapters of the thesis provide interesting new ideas about the connection between proton-proton and Pb-Pb collisions. Simone Schuchmann received the 'ALICE Thesis Award 2016' for this excellent work.

Download or read book Baryon Stopping and Hadronic Spectra in Pb Pb Collisons at 158 GeV nucleon written by Glenn Elliot Cooper and published by . This book was released on 2000 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Particle Production Studies in Pb and Pb Collisions at 158 A GeV c written by Franziskus Stoffel and published by . This book was released on 1997 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Die sieben hohen und kr ftigen Namen Gottes Ms 267 written by and published by . This book was released on 1752 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Charged particle Spectra in Pb Pb Collisions at arrow NN written by and published by . This book was released on 2015 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charged-particle spectra obtained in Pb+Pb interactions at [arrow]"NN = 2.76 TeV and pp interactions at [arrow]"NN = 2.76 TeV with the ATLAS detector at the LHC are presented, using data with integrated luminosities of 0.15 nb-1 and 4.2 pb-1, respectively, in a wide transverse momentum (0.5

Download or read book Measurement of Charged particle Spectra in Pb Pb Collisions at sqrt s mathrm NN written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Charged-particle spectra obtained in Pb+Pb interactions at \(\sqrt{s_{\mathrm{NN}}}=2.76 \) TeV and pp interactions at \(\sqrt{s_{\mathrm{NN}}}=2.76 \) TeV with the ATLAS detector at the LHC are presented, using data with integrated luminosities of 0.15 nb−1 and 4.2 pb−1, respectively, in a wide transverse momentum (0.5

Download or read book Study of Parton Energy Loss in Heavy Ion Collisions Using Charged Particle Spectra Measured with CMS written by Austin A. Baty and published by . This book was released on 2019 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phenomenology of the strong nuclear force is still not well understood at low momentum transfers and requires experimental input to constrain. Collisions of heavy ions at the Large Hadron Collider provide a unique opportunity to explore this kinematic region because they create a novel form of matter: the quark-gluon plasma (QGP). Using the CMS detector, spectra of charged particles originating from protonproton (pp), proton-lead (pPb), and lead-lead (PbPb) collisions at a center of mass energy per nucleon pair ( [square root of SNN) of 5.02 TeV are examined as a function of transverse momentum and centrality. Nuclear modification factors and fragmentation functions are constructed from these spectra. By comparing to pp collision reference spectra, a puzzle concerning previous measurements in pPb collisions is clarified. A strong suppression of particle production observed in PbPb collisions is also quantified. Finally, collisions of xenon nuclei are also studied to constrain the path length dependence of parton energy loss. The strength of energy loss is found to increase with both [square root of SNN and the average path length through the QGP. Comparisons to theoretical models and previous measurements indicate that the path length dependence is between linear and quadratic, as expected from a combination of collisional and radiative energy loss mechanisms.

Download or read book Measurements of Lambda Lambda bar and K short from Pb Pb Collisions at 158 GeV Per Nucleon in a Large Acceptance Experiment written by Lee S. Barnby and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main reason for studying relativistic heavy-ion collisions is to discover the phase transition from nuclear matter to the Quark-Gluon Plasma. Such a transition is predicted to occur under conditions of high temperature and density. The predicted state features deconfined quarks and gluons as the relevant degrees of freedom instead of colour-singlet hadrons. These new degrees of freedom should lead to an enhanced production of strange quarks which has directly observable consequences on the composition of the final state hadrons detected in such a collision. The NA49 experiment is able to measure hadronic production in central Pb+Pb collisions. It uses a Pb beam, of energy 158 GeV per nucleon, from the CERN SPS with a fixed Pb target. The experiment features four large tracking detectors which can measure the trajectories of charged particles. In this thesis the method of reconstructing neutral strange particles, Lambda, Lambda-bar and K-short from their charged decay products is described. The procedure for correcting the raw yields for losses due to the limited experimental acceptance and efficiency in reconstruction is explained. An estimate of some systematic errors is made. The resulting rapidity distributions, which span either side of mid-rapidity are peaked (with the possible exception of Lambda) and the transverse momentum spectra fit the Hagedorn distribution. The inverse slope parameters, T_Lambda = 274? 5 MeV, T_Lambda-bar = 279? 10 MeV and T_K = 238? 5 MeV are consistent with the picture of transverse flow observed in these collisions. These results are compared with other measurements.

Download or read book Transverse Flow from MT Spectra in Pb Pb Collisions at 158 GeV c Per Nucleon written by Juan Miguel Rubio and published by . This book was released on 1998 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans l'expérience WA98 du CERN, nous avons construit et utilisé un traceur de particules pour mesurer les caractéristiques spatio-temporelles du produit des collisions de ions lourds.

Download or read book Strangelet Search and Particle Production Studies in Pb Pb Collisions at 158 A GeV c with the H6 Beamline Spectrometer at CERN written by Tomas Lindén and published by . This book was released on 2000 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Charged Particle Transverse Momentum Spectra 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 charged particle transverse momentum (pT) spectra are presented for pp collisions at sqrt(s)=0.9 and 7 TeV. The data samples were collected with the CMS detector at the LHC and correspond to integrated luminosities of 231 inverse microbarns and 2.96 inverse picobarns, respectively. Calorimeter-based high-transverse-energy triggers are employed to enhance the statistical reach of the high-pT measurements. The results are compared with both leading-order QCD and with an empirical scaling of measurements at different collision energies using the scaling variable xT = 2 pT/sqrt(s) over the pT range up to 200 GeV/c. Using a combination of xT scaling and direct interpolation at fixed pT, a reference transverse momentum spectrum at sqrt(s)=2.76 TeV is constructed, which can be used for studying high-pT particle suppression in the dense QCD medium produced in heavy-ion collisions at that centre-of-mass energy.

Download or read book PSEUDORAPIDITY distributions of charged particles as a function of centrality in Pb Pb collisions at 158 and 40 GeV per nucleon incident energy written by C. AMSLER and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Charged Multiplicity in Pb Pb Collisions at 158 GeV c Per Nucleon written by Pedro Fernando Paulo Rato Mendes and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: