Measurement Of Longitudinal Double Spin Asymmetries Of Pi Production In P Over Arrow P Over Arrow Collisions At Sqrt S
DOWNLOAD
Download Measurement Of Longitudinal Double Spin Asymmetries Of Pi Production In P Over Arrow P Over Arrow Collisions At Sqrt S PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Measurement Of Longitudinal Double Spin Asymmetries Of Pi Production In P Over Arrow P Over Arrow Collisions At Sqrt S book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Measurement Of Longitudinal Double Spin Asymmetries Of Pi Production In P Over Arrow P Over Arrow Collisions At Sqrt S
DOWNLOAD
Author : Adam Philip Kocoloski
language : en
Publisher:
Release Date : 2010
Measurement Of Longitudinal Double Spin Asymmetries Of Pi Production In P Over Arrow P Over Arrow Collisions At Sqrt S written by Adam Philip Kocoloski 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.
Spin dependent measurements provide incisive tests for modern theories of particle physics. The discovery that the integral of the quark helicity distribution is much too small to account for the spin of the proton is an excellent case in point. It inspired an intense period of theoretical scrutiny and a new generation of experiments to study [Delta]g, the helicity distribution of gluons in the nucleon. In particular, the unique polarized proton collider at RHIC enables a class of asymmetry measurements that are directly sensitive to gluon polarization. The STAR experiment at RHIC measures the double spin asymmetry A[subscript LL] for a variety of final states in collisions of longitudinally polarized protons in order to constrain [Delta]g. Asymmetries for mid-rapidity charged pion production benefit from large cross sections and the excellent tracking and particle identification capabilities of the STAR Time Projection Chamber. This thesis presents the first measurements of charged pion A[subscript LL] at STAR. The measurements are compared to predictions based on perturbative QCD calculations and from this comparison model-dependent constraints are placed on the integral gluon polarization [Delta]G.
Inis Atomindex
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1983
Inis Atomindex 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 Nuclear energy categories.
Longitudinal Double Spin Asymmetry And Cross Section For Inclusive Neutral Pion Production In Polarized Proton Collisions At The Square Root Of Sigma
DOWNLOAD
Author : Alan Michael Hoffman
language : en
Publisher:
Release Date : 2009
Longitudinal Double Spin Asymmetry And Cross Section For Inclusive Neutral Pion Production In Polarized Proton Collisions At The Square Root Of Sigma written by Alan Michael Hoffman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Twenty years of polarized lepton-nucleon scattering experiments have found that the contribution from quark spins (1/2[delta] [sigma]) to the spin of the proton is only ~ 35%. This has lead researchers to look elsewhere, specifically to gluon spin ([delta sigma]) for a large contribution to proton spin. [delta sigma] has been only loosely constrained in polarized DIS and SIDIS experiments. Polarized proton-proton collisions at RHIC provide sensitivity to [delta sigma] through measurements of the longitudinal double-spin asymmetry, ALL. This work presents a measurement of ALL for inclusive 7ro production in polarized proton-proton collisions using the STAR detector and data from RHIC Run 6. 7r0s are abundantly produced at mid-rapidity in proton-proton collisions, making them natural candidates for studies of [delta] [sigma]. Novel techniques for reconstructing 7ros at STAR are discussed, and a measurement of the unpolarized cross section presented. Finally, the measured ALL is compared to perturbative QCD predictions and from this comparison constraints are placed on [delta] [sigma].
Longitudinal Double Spin Asymmetry And Cross Section For Inclusivejet Production In Polarized Proton Collisions At Sqrt S
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2006
Longitudinal Double Spin Asymmetry And Cross Section For Inclusivejet Production In Polarized Proton 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 2006 with categories.
We report a measurement of the longitudinal double-spinasymmetry A_LL and the differential cross section for inclusivemidrapidity jet production in polarized proton collisions at sqrt(s)=200GeV. The cross section data cover transverse momenta 5
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1938
written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1938 with categories.
Longitudinal Double Spin Asymmetries For Dijet Production At Intermediate Pseudorapidity In Polarized P P Collisions At Square Root Of S
DOWNLOAD
Author : Joseph H. Kwasizur
language : en
Publisher:
Release Date : 2021
Longitudinal Double Spin Asymmetries For Dijet Production At Intermediate Pseudorapidity In Polarized P P Collisions At Square Root Of S written by Joseph H. Kwasizur and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Gluons categories.
Measurement Of Single And Double Spin Asymmetries In Right Arrow Over P E E Prime Pi Superscript Plus Over Minus 0 X Semi Inclusive Deep Inelastic Scattering
DOWNLOAD
Author : Sucheta Shrikant Jawalkar
language : en
Publisher:
Release Date : 2012
Measurement Of Single And Double Spin Asymmetries In Right Arrow Over P E E Prime Pi Superscript Plus Over Minus 0 X Semi Inclusive Deep Inelastic Scattering written by Sucheta Shrikant Jawalkar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Protons categories.
Forward Neutral Pion Transverse Single Spin Asymmetries In P P Collisions At Sqrt S
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2008
Forward Neutral Pion Transverse Single Spin Asymmetries In P P 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 2008 with categories.
We report precision measurements of the Feynman-x (x{sub F}) dependence, and first measurements of the transverse momentum (p{sub T}) dependence, of transverse single spin asymmetries for the production of [pi]° mesons from polarized proton collisions at √s = 200 GeV. The x{sub F} dependence of the results are in fair agreement with perturbative QCD (pQCD) model calculations that identify orbital motion of quarks and gluons within the proton as the origin of the spin effects. Results for the p{sub T} dependence at fixed x{sub F} are not consistent with these same pQCD-based calculations.
Measurement Of The Longitudinal Double Spin Asymmetry For Dijet Production In Polarized Proton Proton Collisions At Sqrt S
DOWNLOAD
Author : Daniel L. Olvitt
language : en
Publisher:
Release Date : 2017
Measurement Of The Longitudinal Double Spin Asymmetry For Dijet Production In Polarized Proton Proton Collisions At Sqrt S written by Daniel L. Olvitt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Understanding what contributes to the intrinsic angular momentum (spin) of the proton has been a major goal of the nuclear physics community. In the 1980s, it was discovered that quarks contribute 30% to the spin of the proton. This information led to a search to find other contributions to the spin of the proton. At STAR, the double spin asymmetry (ALL) is measured as it is sensitive to the polarized gluon distribution (Dg(x)). The STAR 2009 inclusive jet ALL at sqrt(s) = 200 GeV has been incorporated into two independent global fits. These fits show for the first time a statistically significant non-zero gluon contribution to the spin of the proton in the parton momentum fraction range x > 0.05. Dijet ALL is also measured at STAR. Dijets are advantageous since the parton momentum fraction (x) of the initial partons may be reconstructed to first order from final state measurements. In 2013 STAR collected an estimated 250 pb-1 of data at sqrt(s) = 510 GeV. The higher center of mass energy will allow STAR to probe Dg(x) at x values as low as 0.02. The large statistics will allow a reduction in the uncertainties. Once the data is incorporated into future global fits, it will allow for a more precise determination of Dg(x). The 2013 dijet ALL results will be presented. The results show good agreement with both global fits and previous STAR results dijet measurements.
Longitudinal Gluon Polarization In Rhic Double Spin Asymmetries
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2004
Longitudinal Gluon Polarization In Rhic Double Spin Asymmetries written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.