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Production De Mesons Phi Rho Et Omega Dans Les Collisions D C D U S U A 200 Gev Nucleon Et Pb Pb A 158 Gev Nucleon
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Book Synopsis Phi Meson Production in P+p Collisions at 200 GeV Measured by the PHENIX Experiment at the Relativistic Heavy Ion Collider by : Dmitri Vladimirovitch Kotchetkov
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:
Book Synopsis ETUDE DE LA PRODUCTION DES MESONS PHI, RHO ET OMEGA DANS LES COLLISIONS D'IONS LOURDS ULTRA-RELATIVISTES AU SPS DU CERN (DANS L'EXPERIENCE NA50) by : LAURENCE.. VILLATTE
Download or read book ETUDE DE LA PRODUCTION DES MESONS PHI, RHO ET OMEGA DANS LES COLLISIONS D'IONS LOURDS ULTRA-RELATIVISTES AU SPS DU CERN (DANS L'EXPERIENCE NA50) written by LAURENCE.. VILLATTE and published by . This book was released on 2001 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'EXPERIENCE NA50 EST L'UNE DES EXPERIENCES UTILISANT LE FAISCEAU DU SPS (SUPER PROTON SYNCHROTRON) DU CERN (LABORATOIRE EUROPEEN POUR LA PHYSIQUE DES PARTICULES). LE BUT DE CES EXPERIENCES EST DE METTRE EN EVIDENCE ET CARACTERISER LA FORMATION D'UN ETAT EXTREME DE LA MATIERE NUCLEAIRE : LE PLASMA DE QUARKS ET DE GLUONS. L'UNE DES SIGNATURES PROPOSEES COMME MANIFESTATION DU PLASMA DE QUARKS ET DE GLUONS EST L'AUGMENTATION DE LA PRODUCTION DE PARTICULES CONTENANT DES QUARKS ETRANGES. DANS LE TRAVAIL PRESENTE DES DONNEES DES EXPERIENCES NA50 ET NA38 SONT ANALYSEES. LA PRODUCTION DU MESON PHI A ETRANGETE CACHEE EST ETUDIEE ET COMPAREE A CELLE DES MESONS LEGERS RHO ET OMEGA DANS LES COLLISIONS PB-PB A 158 ET S-U A 200 GEV/C PAR NUCLEON. LE RAPPORT (PHI/(RHO+OMEGA)) DES NOMBRES DE RESONANCES PRODUITES NE FAIT APPARAITRE AUCUN COMPORTEMENT SPECIFIQUE EN FONCTION DE LA MASSE TRANSVERSE, PAR CONTRE UNE AUGMENTATION D'UN FACTEUR 1.7 EST OBSERVEE ENTRE LES COLLISIONS PB-PB CENTRALES ET PERIPHERIQUES. LES MULTIPLICITES DES MESONS PHI ET RHO+OMEGA SONT EXTRAITES POUR LES COLLISIONS PB-PB. L'ETUDE DES MULTIPLICITES MONTRE QUE L'AUGMENTATION DU RAPPORT PHI/(RHO+OMEGA) EST DUE A CELLE DE LA PRODUCTION DU MESON PHI ET QUE LE COMPORTEMENT DU MESON PHI EN FONCTION DU NOMBRE DE NUCLEONS PARTICIPANTS A LA COLLISION (NPART) EST DIFFERENT DE CELUI DES BARYONS MULTI-ETRANGES. LES TEMPERATURES EFFECTIVES DES MESONS PHI ET RHO+OMEGA SONT DEDUITES DE L'ETUDE DES SECTIONS EFFICACES DE PRODUCTION EN FONCTION DE LA MASSE TRANSVERSE, ET COMPAREES A CELLES OBTENUES PAR D'AUTRES EXPERIENCES ET POUR D'AUTRES PARTICULES. UNE ETUDE COMPLEMENTAIRE EST EGALEMENT MENEE AFIN D'EXTRAIRE LE RAPPORT KAON/PION EN FONCTION DE NPART.
Book Synopsis ETUDE DES RESONANCES DE BASSE MASSE (RHO, OMEGA, PHI) DANS LES COLLISIONS S-U ET O-U A 200 GEV PAR NUCLEON by : ALBERTO.. BALDISSERI
Download or read book ETUDE DES RESONANCES DE BASSE MASSE (RHO, OMEGA, PHI) DANS LES COLLISIONS S-U ET O-U A 200 GEV PAR NUCLEON written by ALBERTO.. BALDISSERI and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LA CHROMODYNAMIQUE QUANTIQUE (QCD) PREVOIT POUR DES DENSITES D'ENERGIE ELEVEES (3-4 GEV/FM#3) ET/OU HAUTE TEMPERATURE (200 MEV), UNE TRANSITION DE PHASE ENTRE LA MATIERE HADRONIQUE ET LE PLASMA DE QUARKS ET DE GLUONS (QGP). UNE AUGMENTATION DE L'ETRANGETE A ETE PREDITE COMME ETANT UNE SIGNATURE DE LA FORMATION DE CET ETAT. CECI SE TRADUIRAIT PAR L'AUGMENTATION DE LA PRODUCTION DU MESON PHI AVEC LA DENSITE D'ENERGIE DE LA COLLISION. NOUS ETUDIONS LA PRODUCTION DE DIMUONS DANS LES INTERACTIONS S-U ET O-U A 200 GEV PAR NUCLEON. NOUS COMPARONS LA PRODUCTION DU PHI A LA PRODUCTION DU RHO (OMEGA) ET DU CONTINUUM (ENTRE 1,7 ET 2,7 GEV/C#2), A TRAVERS LES RAPPORTS PHI/(RHO+OMEGA), PHI/CONTINUUM ET (RHO+OMEGA)/CONTINUUM, EN FONCTION DE L'ENERGIE TRANSVERSE NEUTRE (PROPORTIONNELLE A LA DENSITE D'ENERGIE) DE LA COLLISION. VU L'IMPORTANT BRUIT DE FOND VENANT DES PIONS ET KAONS, DES COUPURES SUR L'IMPULSION DES MUONS INDIVIDUELS ONT ETE INTRODUITES AFIN D'EXTRAIRE LE SIGNAL DES RESONANCES, LIMITANT AINSI L'ANALYSE AUX DIMUONS DE GRAND MOMENT TRANSVERSE. LES RESULTATS OBTENUS MONTRENT UNE AUGMENTATION DU RAPPORT PHI/(RHO+OMEGA) EN FONCTION DE L'ENERGIE TRANSVERSE NEUTRE EN S-U ET O-U. L'ETUDE DES RAPPORTS AVEC LE CONTINUUM MONTRE QUE L'AUGMENTATION VIENT DU RAPPORT PHI/CONTINUUM, TANDIS QUE (RHO+OMEGA)/CONTINUUM RESTE CONSTANT. LES RESULTATS PRESENTES SONT COMPATIBLES AVEC UNE AUGMENTATION DE L'ETRANGETE PREVUE DANS LE CAS OU UN QGP EST FORME. NOUS MONTRONS AUSSI D'AUTRES MODELES PLUS CLASSIQUES CAPABLES DE REPRODUIRE NOS RESULTATS
Book Synopsis Production de mésons [phi], [rho] et [omega] dans les collisions d-C, d-U, S-U a 200 GeV/nucléon et Pb-Pb à 158 GeV/nucléon by : Julien Astruc
Download or read book Production de mésons [phi], [rho] et [omega] dans les collisions d-C, d-U, S-U a 200 GeV/nucléon et Pb-Pb à 158 GeV/nucléon written by Julien Astruc and published by . This book was released on 1997 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES EXPERIENCES NA38 ET NA50, ETUDIENT AUPRES DU SPS DU CERN LA PRODUCTION DE DIMUONS DANS DES COLLISIONS D'IONS LOURDS ULTRARELATIVISTES, DONNANT ACCES A CELLE DES MESONS VECTEURS , , ET J/. L'EVOLUTION DE CES PRODUCTIONS PAR RAPPORT A CELLES OBSERVEES DANS LES COLLISIONS IMPLIQUANT DES PROJECTILES LEGERS PERMETTRAIT DE METTRE EN EVIDENCE LES EFFETS DE LA FORMATION DU PLASMA DE QUARKS ET DE GLUONS QUI POURRAIT ETRE PRODUIT SOUS L'EFFET DES HAUTES TEMPERATURES ATTEINTES DANS CES COLLISIONS. UNE FORTE AUGMENTATION DE LA PRODUCTION D'ETRANGETE A ETE PREDITE COMME POUVANT ETRE UNE SIGNATURE DE CETTE NOUVELLE PHASE DE LA MATIERE HADRONIQUE. DANS CETTE THESE NOUS AVONS ETUDIE LA PRODUCTION DES MESONS ETRANGES , ET DES MESONS ET DANS LES COLLISIONS D-C, D-U ET S-U A 200 GEV/NUCLEON ET PB-PB A 158 GEV/NUCLEON, DANS DIFFERENTES REGIONS DE MASSE TRANSVERSE DE LA PAIRE DE MUONS. LES COMPARAISONS DES PRODUCTIONS DE , AVEC CELLES DE ET AINSI QU'AVEC LE CONTINUMM DE MASSE MONTRENT UNE AUGMENTATION DE LA PRODUCTION DU PAR RAPPORT AU + , EN FONCTION DE LA TAILLE DU SYSTEME ET POUR LES COLLISIONS S-U ET PB-PB, DE LA CENTRALITE DE LA COLLISION. L'ETUDE DES SECTIONS EFFICACES DE PRODUCTION POUR LES DIFFERENTS SYSTEMES MET EN EVIDENCE UN CHANGEMENT DE COMPORTEMENT ENTRE LES COLLISIONS DEUTON-NOYAU ET NOYAU-NOYAU. EN DEHORS D'UNE EVOLUTION GENERALE DE LA PRODUCTION, POUR LE + ET LE CONTINUUM, LE MONTRE UNE AUGMENTATION NETTEMENT PLUS ELEVEE ET QUI EST COHERENTE ENTRE LES COLLISIONS S-U ET PB-PB. DE PLUS LES PENTES INVERSES DES SPECTRES EN MASSES TRANSVERSES MONTRENT UNE IMPORTANTE AUGMENTATION ENTRE D-C ET S-U. L'ENSEMBLE DE CES RESULTATS CONFIRME DONC L'IMPORTANTE AUGMENTATION DE LA PRODUCTION DU QUI AVAIT ETE OBSERVEE POUR LE SYSTEME S-U ET QUI SE POURSUIT DANS LES COLLISIONS PB-PB. MOTS-CLES : PLASMA DE QUARKS ET DE GLUONS - DIMUONS - NA38 ET NA50 - IONS LOURDS ULTRARELATIVISTES - RESONANCES , , - MASSE TRANSVERSE - PENTE INVERSE.
Book Synopsis Measurements of Phi Meson Production in Relativistic Heavy-ion Collisions at RHIC. by :
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:
Book Synopsis Observation of Double Phi Meson Production in 400 GeV/c Proton-nucleon Interactions by : Tom Forest Davenport
Download or read book Observation of Double Phi Meson Production in 400 GeV/c Proton-nucleon Interactions written by Tom Forest Davenport and published by . This book was released on 1984 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production of [phi] Mesons in Au+Au Collisions at 11.7 A. GeV/c by : Hong Xiang
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:
Book Synopsis Rho-meson Production by Pions at 15 GeV/c by : Blair Norman Ratcliff
Download or read book Rho-meson Production by Pions at 15 GeV/c written by Blair Norman Ratcliff and published by . This book was released on 1971 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production de [Phi] et [Omega] dans les collisions PbPb à 158 GeV par nucléon by : Tao Wu
Download or read book Production de [Phi] et [Omega] dans les collisions PbPb à 158 GeV par nucléon written by Tao Wu and published by . This book was released on 2003 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production of Omega and Phi Mesons by 193 GeV/c Pions and 250 GeV/c Protons on a Beryllium Target by : James Nugent Bellinger
Download or read book Production of Omega and Phi Mesons by 193 GeV/c Pions and 250 GeV/c Protons on a Beryllium Target written by James Nugent Bellinger and published by . This book was released on 1985 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production de Phi Et Oméga Dans Les Collisions Pb-Pb À 158 Gev Par Nucléon by : Tao Wu
Download or read book Production de Phi Et Oméga Dans Les Collisions Pb-Pb À 158 Gev Par Nucléon written by Tao Wu and published by . This book was released on 2003 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the most central collisions of Pb-Pb nuclei at SPS CERN, sufficiently high values of energy density could be reached so that a transient new state of matter, the plasma of quarks and gluons (QGP) could be formed. The identification of the production of this state relies on consequences it could induceon final products of the collision, like J/psi suppression due to screening effect on the quark pair potential, or increase of the strangeness production in the plasma. Measuring muon pairs in coincidence with observables characterising the PbPb impact parameter, like the transverse energy E-T produced, the NASO experiment bas observed the anomalous suppression of the J/psi and the enhancement of the phi(grec) production. This thesis deals mainly with the phi production study in the data collected by NA50 in year 2000, with an improved experimental setup, in particular concerning the trigger used for measurement of the transverse energy distribution of the Pb-Pb collisions, and rejection of collisions not occurring in the target. These improvements have given a better access to peripheral and central collisions. The transverse energy spectrum obtained is nicely reproduced by a Glauber geometrical model of the collision, from a low E-T threshold. A cross check between various muon pairs multiplicities do not exhibit systematical bias for the most central collisions. Similarly a cross comparison between J/psi and minimum bias events as a function of E-T bas been used to determine the effect on the efficiency of signal determination, of rejections performed on the events. The behaviour of J/psi multiplicity with E-T which is obtained in this study does not confirm the additional drop that could have been suggested by previous results. Inversely the observed decrease of the J/psi multiplicity divided by the number of n-n collisions determined in the Glauber calculation does not seem to saturate for the most central collisions, as predicted by several models which does not suppose the formation of a QGP. The multiplicities and cross sections that we obtain with 2000 datas for phi and w(omega) are in agreement with the ones obtained with previous data sets. The change in the phi branching ratio into dimuons partly reconciles NA50 phi multiplicities with the one measured by NA49 experiment, but the slopes of the MT spectra remains very different. In summary this study confirms the results previously obtained, and brings additional information about most central collision, for J/psi and phi multiplicities. The interest of the phi/w(omega) ratio as a direct estimate of the square of the strangeness saturation factor [gamma]s is underlined.
Book Synopsis Omega - and Phi -meson Production in P+p and D+Au Collisions at RHIC Energies, Using the PHENIX Detector by : Deepali Sharma
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:
Book Synopsis Production Of[phi] Meson in Au+Au Collisions at 11.7 A GeV/c by :
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.
Book Synopsis ? Meson Production in D+Au Collisions at {u221A}sNN by :
Download or read book ? Meson Production in D+Au Collisions at {u221A}sNN written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The PHENIX Collaboration has measured ? meson production in d+Au collisions at √sNN = 200 GeV using the dimuon and dielectron decay channels. The ? meson is measured in the forward (backward) d-going (Au-going) direction, 1.2 y 2.2 (–2.2
Book Synopsis Production of $D^{*\pm}$ Mesons in 250 GeV Hadron--nucleon Interacions and Observation of the Decay Mode $D^0 \pi^{\pm}$, $D^0 \to K^{\mp} \pi^{\pm} \pi^0$ by :
Download or read book Production of $D^{*\pm}$ Mesons in 250 GeV Hadron--nucleon Interacions and Observation of the Decay Mode $D^0 \pi^{\pm}$, $D^0 \to K^{\mp} \pi^{\pm} \pi^0$ written by and published by . This book was released on 1992 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fermilab experiment E769 collected approximately 400 billion events using a 250 GeV /c pion, haon and proton beam incident on targets of Al, Cu, Be and W. One measured the xF and p$2\atop{T}$ di stributions of 232 ± 13.5 C* through the decay mode D0[pi], where D0 2!K[pi][pi]0 without reconstructing the [pi]0 . Fitting the distributions to the form A(l - xF)" and Be-bp$2\atop{T}$, respectively, the values n = 4.14±0.31 ±0.03 and b = 0.68±0.06± 0.03 Gev-2 were found. The dependence of the cross section with the atomic number was measured and the fit to the curve A[alpha] gave [alpha]= 1.06 ± .08 ± .01. Those measurements are compared with another analysis, with those of other experiments and with predictions based on pert urbative QCD.
Book Synopsis Energy and System Size Dependence of Phi Meson Production in Cu+Cu and Au+Au Collisions by :
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:
Book Synopsis Production of [phi], [rho] and [omega] Mesons in the Hadronization of a Quark-gluon Plasma by : H. W. Barz
Download or read book Production of [phi], [rho] and [omega] Mesons in the Hadronization of a Quark-gluon Plasma written by H. W. Barz and published by . This book was released on 1990 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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