Download or read book Measurement of phi Meson Production in Cu Cu Collisions at 200 GeV Using the PHOBOS Detector at RHIC written by Siarhei S. Vaurynovich and published by . This book was released on 2012 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strong enhancement of production of strange particles, and in particular of [phi] mesons, in heavy ion collisions of sufficiently high energies has been predicted to be an indication of a formation of a new state of matter, composed of deconfined quarks and gluons and having a property of chiral symmetry, called Quark Gluon Plasma (QGP). Studying production of [phi] mesons is of special interest due to their small cross-section of interaction with non-strange hadrons and due to their long lifetime, which should allow [phi] mesons to decouple from the strongly interacting medium produced in heavy ion collisions early in time and to escape the medium before decaying, thereby preserving information about the conditions in which the mesons were produced. In addition, the decay properties of [phi] mesons have been predicted to be modified in a hadronic gas medium. The [phi] -> K+K~ decay is of particular interest since the mass of a [phi] meson in vacuum is very close to the mass of two charged kaons, and consequently, even a small change in the mass or the width of [phi] mesons or in the mass of kaons would have a strong effect on the decay properties. Measurement of [phi] meson production using the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC) has proven to be especially challenging due to a small acceptance of the PHOBOS spectrometer and due to a much lower than predicted yield of [phi] mesons in heavy ion collisions at the highest RHIC energy. The measurement required a development of a new tracking algorithm, specifically tailored to reconstruct charged kaons with a high efficiency in a high hit density environment, keeping at the same time the necessary computing time within feasible limits. Results of a measurement of [phi] meson invariant yield in the rapidity interval 0 y

Download or read book Energy and System Size Dependence of Phi Meson Production in Cu Cu and Au Au Collisions written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of Phi Meson Production in Relativistic Heavy ion Collisions at RHIC written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phi Meson Production in P p Collisions at 200 GeV Measured by the PHENIX Experiment at the Relativistic Heavy Ion Collider written by Dmitri Vladimirovitch Kotchetkov and published by . This book was released on 2005 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meson Production in Au Au Collisions at 200 GeV Measured by the PHENIX Experiment at the Relativistic Heavy Ion Collider written by Mohammed Muniruzzaman and published by . This book was released on 2003 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phi Meson Production in P p D Au and Au Au Collisions at RHIC Using the PHENIX Detector written by Maxim Naglis and published by . This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the In medium Phi meson Width in Proton nucleus Collisions written by and published by . This book was released on 2010 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We measured the production of [Phi] mesons in the collisions of 2.83 GeV protons with C, Cu, Ag, and Au at forward angles via the [Phi] → K+K- decay using the COSY-ANKE magnetic spectrometer. The [Phi] meson production cross section follows a target mass dependence of A0.56±0.02 in the momentum region of 0.6-1.6 GeV/c. Moreover, the comparison of the data with model calculations suggests that the in-medium [Phi] width is about an order of magnitude larger than its free value.

Download or read book J Psi E e Measurements in Cu Cu Collisions at 200 GeV written by Kushal Das and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: J/Psi production has been measured by the PHENIX experiment, one of the two major experiments at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) in p + p, d + Au, Au + Au and Cu + Cu collisions at the center of mass energy per nucleon (sqrt {s_{NN}}) of 200 GeV. The analysis of the Cu + Cu data is the focus of this dissertation.

Download or read book Measurement of Neutral Pions and Direct Photons in Copper Copper Collisions at 62 4 GeV Center of Mass Energy written by Timothy James Hester and published by . This book was released on 2012 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production Of phi Meson in Au Au Collisions at 11 7 A GeV c written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: First Measurement of[phi] meson production in Au+Au collisions has been conducted by E917 at BNL-AGS via selecting events with identified K[sup+]K[sup[minus]] pairs. Preliminary results on the invariant mass spectra of K[sup+]K[sup[minus]] pairs and the m[sub T] spectra are presented. Also, the inverse slope T, dN/dy, the ratio of[phi]/K[sup[minus]], ratio of[phi]/K[sup+]K[sup[minus]] and their centrality dependences are extracted in a rapidity range of y= 0.9-1.4. Indications on the possible mechanisms of[phi] production are discussed.

Download or read book Production of phi Mesons in Au Au Collisions at 11 7 A GeV c written by Hong Xiang and published by . This book was released on 1999 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MEASUREMENT OF PHI MESON PRODUCTION IN PROTON NUCLEUS COLLISIONS AT 400 GEV C written by DAVID STANLEY KOLTICK and published by . This book was released on 1978 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Omega and Phi meson Production in P p and D Au Collisions at RHIC Energies Using the PHENIX Detector written by Deepali Sharma and published by . This book was released on 2010 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Die Apokryphen Alten Testaments mit vollst ndig erkl renden Anmerkungen written by and published by . This book was released on 1800 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Open Heavy Flavor Measurement at Forward Angles for Cu Cu Collisions at Center of Mass NN Collision Energy 200 GeV written by Irakli Garishvili and published by . This book was released on 2009 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main purpose of Relativistic Heavy Ion Collider (RHIC) program is to study the Quark-Gluon Plasma (QGP), a deconfined state of matter believed to be created in ultra-relativistic heavy ion collisions. Heavy quarks, expected to be produced during the earlier stages of heavy ion collisions, serve as an important probe of the QGP. The following dissertation presents measurements of single muons resulting from the semileptonic decay of heavy avor quarks in the rapidity range of 1:4

Download or read book Production of phi Mesons in Central Si Au Collisions at 14 6 A GeV c written by and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of [phi] mesons from central Si+Au collisions has been measured by E859 at the BNL-AGS by selecting events with identified KK− pairs. The values for the mass and width of the [phi] obtained from the invariant mass of the kaon pairs are consistent with those of the Particle Data Book. Preliminary results for the invariant 1/2[pi]m{sub T} d2n/dm{sub T}dy distribution and dn/dy are presented. The inverse slope parameter for an exponential m{sub T} fit to the m{sub T} spectrum is 171±18 MeV. An analysis of the ratio of the [phi] signal to the combinatoric background in the K+K− invariant mass distribution provides a rough estimate of the size of the reaction region, which is found to be consistent with the E859 interferometry measurements.

Download or read book Production of phi Mesons in Central Si Au Collisions at 14 6 A center dot GeV c written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of [phi] mesons from, central Si + Au collisions has been measured by E859 at the BNL-AGS by selecting events with identified K[sup +]K[sup [minus]] pairs. The values for the mass and width of the [phi] obtained from the invariant mass of the kaon pairs are consistent with those of the Particle Data Book. Preliminary results for the invariant 1/2[pi]m[sub T] d[sup 2]n/dm[sub T]dy distribution and dN/dy are presented.