Transverse Momentum Evolution Of Hardon V0 Correlations In Pp Collisions At Square Root S

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Transverse Momentum Evolution Of Hardon V0 Correlations In Pp Collisions At Square Root S

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Author : Sandun Yasassri Jayarathna Pahula Hewage
language : en
Publisher:
Release Date : 2015

Transverse Momentum Evolution Of Hardon V0 Correlations In Pp Collisions At Square Root S written by Sandun Yasassri Jayarathna Pahula Hewage and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Heavy ions categories.

The Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) in Geneva, Switzerland, is capable of accelerating beams of protons (pp) and heavy-ions (Pb+Pb) up to nearly the speed of light, which corresponds to center of mass energies of 7 TeV and 2.76 TeV, respectively. The goal of the pp program is to investigate physics of and beyond the standard model, while the heavy-ion program attempts to characterize the properties of a new state of matter, called the Quark Gluon Plasma. The main aim of this dissertation is to identify particle production mechanisms in pp collisions, also as a reference for possible modifications due to the plasma formation in heavy-ion collisions. Two-particle azimuthal correlation measurements were employed, which allow the study of high-pT parton fragmentation without full jet reconstruction. We present the results of correlations between charged trigger particles and associated strange baryons and mesons. Enhancements of the azimuthal correlations are seen at dphi= 0 and dphi= pi, resulting from back-to-back jet fragmentation in the parton center-of-mass system. Two model fit functions were introduced to characterize the properties of the jet peaks. Hard and soft yields were seperated using the ZYAM method and extracted yields were compared with pQCD inspired models and inclusive spectra. The analysis was performed in different multiplicity bins to detect possible enhancements of baryons or meson yields and the baryon/meson ratio. The latter was observed in high multiplicity Pb+Pb collisions and interpreted as a novel production mechanism in the deconfined medium produced at the LHC. A novel data-driven feeddown correction for Lambda is also introduced, which could allow a more accurate calculation of the primary Xi.

Science Citation Index

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Author :
language : en
Publisher:
Release Date : 1992

Science Citation Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Science categories.

Vols. for 1964- have guides and journal lists.

Particle Ratios At High Transverse Momentum In Pp Collisions At Square Root S

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Author :
language : en
Publisher:
Release Date : 1983

Particle Ratios At High Transverse Momentum In Pp Collisions At Square Root S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.

Transverse Momentum And Pseudorapidity Distributions Of Charged Hadrons In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2010

Transverse Momentum And Pseudorapidity Distributions Of Charged Hadrons In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

Measurement Of Track Based Missing Transverse Momentum In Proton Proton Collisions At S

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Author : Claire Alexandra Lee
language : en
Publisher:
Release Date : 2014

Measurement Of Track Based Missing Transverse Momentum In Proton Proton Collisions At S written by Claire Alexandra Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Collisions (Nuclear physics) categories.

Correlations Between High Transverse Momentum Hadrons In Greek Letter Pi P Kp And Pp Collisions At 200 Gev C

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Author : Robert Walter Stanek
language : en
Publisher:
Release Date : 1980

Correlations Between High Transverse Momentum Hadrons In Greek Letter Pi P Kp And Pp Collisions At 200 Gev C written by Robert Walter Stanek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Hadrons categories.

Measurement Of The Z Boson Transverse Momentum Distribution In Pp Collisions At Square Root S

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Author : Zhi-Yu Jiang
language : en
Publisher:
Release Date : 1995

Measurement Of The Z Boson Transverse Momentum Distribution In Pp Collisions At Square Root S written by Zhi-Yu Jiang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Collisions (Nuclear physics) categories.

Soft And Hard Interactions In P Bar P Collisions At Square Root S

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Author :
language : en
Publisher:
Release Date : 2000

Soft And Hard Interactions In P Bar P Collisions At Square Root S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

Proton-antiproton events collected with the CDF minimum-bias trigger at (square root)(s) = 1800 and 630 GeV are studied splitting the full event sample in a soft subsample of events with no energy clusters above 1.1 GeV and in the subsample of the remaining events. Detailed and precise analyses of the multiplicity and transverse momentum distributions as well as of the correlation of the average pt and of its dispersion with the multiplicity are performed for the two samples. Comparisons of the results and of their dependence from the center of mass energy show clear differences in their behaviors. The results support important and unexpected scaling properties of the soft sample.

Charged Particle Transverse Momentum Spectra In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2011

Charged Particle Transverse Momentum Spectra In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

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.

Measurements Of Charged Particle Transverse Momentum Spectra In Pbpb Collisions At Square Root Of Nn

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Author : Eric Appelt
language : en
Publisher:
Release Date : 2014

Measurements Of Charged Particle Transverse Momentum Spectra In Pbpb Collisions At Square Root Of Nn written by Eric Appelt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Collisions (Nuclear physics) categories.