![Nuclear Effects on the Transverse Momentum Spectra of Charged Particles in PPb Collisions at [arrow]](https://books.google.com/books/content/images/frontcover/z91uAQAACAAJ?fife=w150-h200)
Author: Publisher:
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Category :
Languages : en
Pages :
Book Description
Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at [arrow]"NN = 5.02 TeV in the range 0.4
Nuclear Effects on the Transverse Momentum Spectra of Charged Particles in PPb Collisions at [arrow]"NN
![Nuclear Effects on the Transverse Momentum Spectra of Charged Particles in PPb Collisions at [arrow]](https://books.google.com/books/content/images/frontcover/z91uAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at [arrow]"NN = 5.02 TeV in the range 0.4
Nuclear Effects on the Transverse Momentum Spectra of Charged Particles in PPb Collisions at $\sqrt{s_{_\mathrm {NN}}}
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 37
Book Description
Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at [arrow]"NN = 5.02 TeV, in the range 0.4
Measurements of Charged-particle Transverse Momentum Spectra in PbPb Collisions at [square Root Of]nn
![Measurements of Charged-particle Transverse Momentum Spectra in PbPb Collisions at [square Root Of]nn PDF](https://books.google.com/books/content/images/frontcover/p8CHoAEACAAJ?fife=w80-h100)
Author: Eric AppeltPublisher:
ISBN:
Category : Collisions (Nuclear physics)
Languages : en
Pages : 148
Book Description
Transverse Momentum Spectra of Charged Particles in Proton-proton Collisions at √s
Author: Kenneth AamodtStudy of Parton Energy Loss in Heavy Ion Collisions Using Charged Particle Spectra Measured with CMS
Author: Austin A. BatyPublisher:
ISBN:
Category :
Languages : en
Pages : 245
Book Description
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.
Transverse Momentum Distributions of Charged Particles in Nuclear Collisions at RHIC Energies
Author: Adam TrzupekMeasurement of Charged-particle Spectra in Pb+Pb Collisions at [arrow]"NN
![Measurement of Charged-particle Spectra in Pb+Pb Collisions at [arrow]](https://books.google.com/books/content/images/frontcover/qaejAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 51
Book Description
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
Nuclear Effects in High-energy Proton-nucleus Collisions
Author: Florian CougoulicPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
In the Standard Model of particle physics,the theory of the strong interaction, Quantum Chromodynamics (QCD), is a gauge theory of symmetry group SU (Nc) with respect to the color quantum number. QCD obeys the property of asymptotic freedom, allowing the computation of high-energy physical observables using perturbative QCD (pQCD). This thesis deals with the pQCD description of hadron production rates in high-energy hadronic collisions, in view of applications to the phenomenology of proton-nucleus and nucleus-nucleus collisions at hadron colliders (RHIC,LHC), where so-called nuclear effects (shadowing, parton energy loss, transverse momentum broadening) come into play. In a first part, I study the transverse broadening of an energetic parton system crossing a nucleus, putting emphasis on the color structure of the process. A theoretical setup based on the dipole formalism is used,and a kinetic equation is derived for the parton pair transverse momentum distribution, requiring the parton pair to be in a given color state (SU (Nc) irreducible representation) both in the initial and final state. The color structure is encoded in a color evolution operator, which is obtained for any type of parton pair. For a small-size compact pair, the derivation yields a transparent physical interpretation of the pair transverse broadening process. In a second part, I discuss the soft anomalous dimension matrix Q, which is formally analogous to the previous evolution operator, and which appears when studying soft gluon radiation associated to 2 -> 2 hard parton scattering. It has been noticed that the Q-matrix associated to gg -> gg has a surprising symmetry (relating external and internal degrees of freedom). I developed tools to derive the Q-matrices associated to2 -> 2 scatterings involving generalized partons, in order to explore if the symmetry observed for gg -> gg is fortuitous or not.
Author: Edgar Pérez Lezama
Author: Theodore Cosmo Holtom