Related papers: Probing gluon shadowing with forward photons at RH…

Quarkonia production at RHIC

Quarkonia (J/Psi, Psi', Upsilon) production provides a sensitive probe of gluon distributions and their modification in nuclei; and is a leading probe of the hot-dense (deconfined) matter created in high-energy collisions of heavy ions. I…

Nuclear Experiment · Physics 2009-11-11 M. J. Leitch

Peripheral heavy ion collisions as a probe of the nuclear gluon distribution

At high energies a quark-gluon plasma is expected to be formed in heavy ion collisions at RHIC and LHC. The theoretical description of these processes is directly associated to a complete knowledge of the details of medium effects in the…

High Energy Physics - Phenomenology · Physics 2009-11-07 V. P. Goncalves , C. A. Bertulani

Consequences of high-$x$ proton size fluctuations in small collision systems at RHIC

Recent measurements of jet production rates at large transverse momentum ($p_T$) in the collisions of small projectiles with large nuclei at RHIC and the LHC indicate that they have an unexpected relationship with estimates of the collision…

Nuclear Theory · Physics 2016-08-31 D. McGlinchey , J. L. Nagle , D. V. Perepelitsa

Energy Loss of Leading Hadrons and Direct Photon production in Evolving Quark-Gluon Plasma

We calculate the nuclear modification factor of neutral pions and the photon yield at high p_T in central Au-Au collisions at RHIC (\sqrt{s}=200 GeV) and Pb-Pb collisions at the LHC (\sqrt{s}=5500 GeV). A leading-order accurate treatment of…

High Energy Physics - Phenomenology · Physics 2010-04-06 Simon Turbide , Charles Gale , Sangyong Jeon , Guy D. Moore

Measurement of Direct Photons in Au+Au Collisions at sqrt(s_NN) = 200 GeV

We report the measurement of direct photons at midrapidity in Au+Au collisions at sqrt{s_NN} = 200 GeV. The direct photon signal was extracted for the transverse-momentum range of 4 GeV/c < p_T < 22 GeV/c, using a statistical method to…

Nuclear Experiment · Physics 2015-06-05 S. Afanasiev , C. Aidala , N. N. Ajitanand , Y. Akiba , A. Al-Jamel , J. Alexander , K. Aoki , L. Aphecetche , R. Armendariz , S. H. Aronson , R. Averbeck , T. C. Awes , B. Azmoun , V. Babintsev , A. Baldisseri , K. N. Barish , P. D. Barnes , B. Bassalleck , S. Bathe , S. Batsouli , V. Baublis , F. Bauer , A. Bazilevsky , S. Belikov , R. Bennett , Y. Berdnikov , M. T. Bjorndal , J. G. Boissevain , H. Borel , K. Boyle , M. L. Brooks , D. S. Brown , D. Bucher , H. Buesching , V. Bumazhnov , G. Bunce , J. M. Burward-Hoy , S. Butsyk , S. Campbell , J. -S. Chai , S. Chernichenko , C. Y. Chi , J. Chiba , M. Chiu , I. J. Choi , T. Chujo , V. Cianciolo , C. R. Cleven , Y. Cobigo , B. A. Cole , M. P. Comets , M. Connors , P. Constantin , M. Csanád , T. Csörgő , T. Dahms , K. Das , G. David , H. Delagrange , A. Denisov , D. d'Enterria , A. Deshpande , E. J. Desmond , O. Dietzsch , A. Dion , J. L. Drachenberg , O. Drapier , A. Drees , A. K. Dubey , A. Durum , V. Dzhordzhadze , Y. V. Efremenko , J. Egdemir , A. Enokizono , H. En'yo , B. Espagnon , S. Esumi , D. E. Fields , F. Fleuret , S. L. Fokin , B. Forestier , Z. Fraenkel , J. E. Frantz , A. Franz , A. D. Frawley , Y. Fukao , S. -Y. Fung , S. Gadrat , F. Gastineau , M. Germain , A. Glenn , M. Gonin , J. Gosset , Y. Goto , R. Granier de Cassagnac , N. Grau , S. V. Greene , M. Grosse Perdekamp , T. Gunji , H. -Å. Gustafsson , T. Hachiya , A. Hadj Henni , J. S. Haggerty , M. N. Hagiwara , H. Hamagaki , H. Harada , E. P. Hartouni , K. Haruna , M. Harvey , E. Haslum , K. Hasuko , R. Hayano , X. He , M. Heffner , T. K. Hemmick , J. M. Heuser , H. Hiejima , J. C. Hill , R. Hobbs , M. Holmes , W. Holzmann , K. Homma , B. Hong , T. Horaguchi , M. G. Hur , T. Ichihara , H. Iinuma , K. Imai , J. Imrek , M. Inaba , D. Isenhower , L. Isenhower , M. Ishihara , T. Isobe , M. Issah , A. Isupov , B. V. Jacak , J. Jia , J. Jin , O. Jinnouchi , B. M. Johnson , K. S. Joo , D. Jouan , F. Kajihara , S. Kametani , N. Kamihara , M. Kaneta , J. H. Kang , T. Kawagishi , A. V. Kazantsev , S. Kelly , A. Khanzadeev , D. J. Kim , E. Kim , Y. -S. Kim , E. Kinney , Á. Kiss , E. Kistenev , A. Kiyomichi , C. Klein-Boesing , L. Kochenda , V. Kochetkov , B. Komkov , M. Konno , D. Kotchetkov , A. Kozlov , P. J. Kroon , G. J. Kunde , N. Kurihara , K. Kurita , M. J. Kweon , Y. Kwon , G. S. Kyle , R. Lacey , J. G. Lajoie , A. Lebedev , Y. Le Bornec , S. Leckey , D. M. Lee , M. K. Lee , M. J. Leitch , M. A. L. Leite , X. H. Li , H. Lim , A. Litvinenko , M. X. Liu , C. F. Maguire , Y. I. Makdisi , A. Malakhov , M. D. Malik , V. I. Manko , H. Masui , F. Matathias , M. C. McCain , P. L. McGaughey , Y. Miake , T. E. Miller , A. Milov , S. Mioduszewski , G. C. Mishra , J. T. Mitchell , D. P. Morrison , J. M. Moss , T. V. Moukhanova , D. Mukhopadhyay , J. Murata , S. Nagamiya , Y. Nagata , J. L. Nagle , M. Naglis , T. Nakamura , J. Newby , M. Nguyen , B. E. Norman , A. S. Nyanin , J. Nystrand , E. O'Brien , C. A. Ogilvie , H. Ohnishi , I. D. Ojha , K. Okada , O. O. Omiwade , A. Oskarsson , I. Otterlund , K. Ozawa , D. Pal , A. P. T. Palounek , V. Pantuev , V. Papavassiliou , J. Park , W. J. Park , S. F. Pate , H. Pei , J. -C. Peng , H. Pereira , V. Peresedov , D. Yu. Peressounko , C. Pinkenburg , R. P. Pisani , M. L. Purschke , A. K. Purwar , H. Qu , J. Rak , I. Ravinovich , K. F. Read , M. Reuter , K. Reygers , V. Riabov , Y. Riabov , G. Roche , A. Romana , M. Rosati , S. S. E. Rosendahl , P. Rosnet , P. Rukoyatkin , V. L. Rykov , S. S. Ryu , B. Sahlmueller , N. Saito , T. Sakaguchi , S. Sakai , V. Samsonov , H. D. Sato , S. Sato , S. Sawada , V. Semenov , R. Seto , D. Sharma , T. K. Shea , I. Shein , T. -A. Shibata , K. Shigaki , M. Shimomura , T. Shohjoh , K. Shoji , A. Sickles , C. L. Silva , D. Silvermyr , K. S. Sim , C. P. Singh , V. Singh , S. Skutnik , W. C. Smith , A. Soldatov , R. A. Soltz , W. E. Sondheim , S. P. Sorensen , I. V. Sourikova , F. Staley , P. W. Stankus , E. Stenlund , M. Stepanov , A. Ster , S. P. Stoll , T. Sugitate , C. Suire , J. P. Sullivan , J. Sziklai , T. Tabaru , S. Takagi , E. M. Takagui , A. Taketani , K. H. Tanaka , Y. Tanaka , K. Tanida , M. J. Tannenbaum , A. Taranenko , P. Tarján , T. L. Thomas , M. Togawa , J. Tojo , H. Torii , R. S. Towell , V-N. Tram , I. Tserruya , Y. Tsuchimoto , S. K. Tuli , H. Tydesjö , N. Tyurin , C. Vale , H. Valle , H. W. van Hecke , J. Velkovska , R. Vértesi , A. A. Vinogradov , E. Vznuzdaev , M. Wagner , X. R. Wang , Y. Watanabe , J. Wessels , S. N. White , N. Willis , D. Winter , C. L. Woody , M. Wysocki , W. Xie , A. Yanovich , S. Yokkaichi , G. R. Young , I. Younus , I. E. Yushmanov , W. A. Zajc , O. Zaudtke , C. Zhang , J. Zimányi , L. Zolin

The Nuclear Modification Factor at Large Rapidities

RHIC data on high-$p_T$ hadron production display strong suppression in a wide rapidity region, indicating strong induced energy loss for both transversally and longitudinally traveling partons. We investigate the interplay of energy loss…

High Energy Physics - Phenomenology · Physics 2009-11-11 G. G. Barnafoldi , P. Levai , G. Papp , G. Fai

Color Glass Condensate at RHIC ?

Heavy-ion collisions at the BNL-RHIC collider can probe whether gluon saturation effects in nuclei at small x have set in, or whether leading-twist perturbative estimates of particle production are still applicable. I discuss that soon to…

Nuclear Theory · Physics 2007-05-23 Adrian Dumitru

Production of Forward Rapidity Photons in High Energy Heavy Ion Collisions

We consider production of prompt photons in high energy gold-gold and deuteron-gold collisions in the forward rapidity region of RHIC ($y \sim 3.8$). In this kinematics, the projectile partons typically have large $x_{bj}$ while the target…

High Energy Physics - Phenomenology · Physics 2010-11-30 Jamal Jalilian-Marian

Measurement of Open Heavy Flavor Production with Single Muons in p+p and d+Au Collisions at RHIC

Heavy flavor production in hadronic collisions is dominated by gluonic processes and so is a sensitive probe of the gluon structure function in the nucleon and its modification in nuclei. A study of heavy flavor production in p+p and d+Au…

Nuclear Experiment · Physics 2009-11-11 Xiaorong Wang

Forward Lambda Production and Nuclear Stopping Power in d+Au Collisions at RHIC

Using the forward time projection chambers of STAR we measure the centrality dependent Lambda and Anti-Lambda yields in d+Au collisions at \sqrt{s_{NN} = 200 GeV at forward and backward rapidities. The contributions of different processes…

Nuclear Experiment · Physics 2019-08-14 Frank Simon

Quenching of photon and pion spectra at intermediate RHIC energy

Single prompt photon and pion spectra in p-p and Au-Au collisions at intermediate RHIC energy, s^1/2 = 62.4 GeV, are computed at large transverse momentum in perturbative QCD. Next-to-leading order calculations in p-p scattering are first…

High Energy Physics - Phenomenology · Physics 2009-04-22 Francois Arleo

Diphoton production in high-energy p+A collisions

We consider semi-inclusive diphoton+jet and inclusive diphoton production in high-energy proton-nucleus collisions, treating the target nucleus as a Color-Glass-Condensate and the projectile proton in the parton model. We obtain the prompt…

High Energy Physics - Phenomenology · Physics 2014-07-23 Alex Kovner , Amir H. Rezaeian

Rapidity Correlations and $\Delta G $ from Prompt Photon plus Jet Production in Polarized $pp$ Collisions

A study of prompt photon plus associated jet production is performed at next-to-leading order (O($\alpha\alpha_s^2$)) in QCD at $\sqrt{S}=200-500$ GeV, appropriate for the RHIC polarized $\vec{p}\vec{p}$ collider experiment. Momentum…

High Energy Physics - Phenomenology · Physics 2014-11-17 Sanghyeon Chang , Claudio Coriano , L. E. Gordon

Direct photon production at HERA, the Tevatron and the LHC

We review several most recent prompt-photon measurements at HERA and the Tevatron and discuss their implication for future measurements at the LHC. A comparison to Monte Carlo models, as well as to NLO QCD predictions based on the standard…

High Energy Physics - Phenomenology · Physics 2009-03-05 R. E. Blair , S. Chekanov , G. Heinrich , A. Lipatov , N. Zotov

Nuclear-Modification Factor for Open-Heavy-Flavor Production at Forward Rapidity in Cu+Cu Collisions at sqrt(s_NN)=200 GeV

Background: Heavy-flavor production in p+p collisions tests perturbative-quantum-chromodynamics (pQCD) calculations. Modification of heavy-flavor production in heavy-ion collisions relative to binary-collision scaling from p+p results,…

Nuclear Experiment · Physics 2019-08-13 A. Adare , S. Afanasiev , C. Aidala , N. N. Ajitanand , Y. Akiba , H. Al-Bataineh , J. Alexander , K. Aoki , L. Aphecetche , R. Armendariz , S. H. Aronson , J. Asai , E. T. Atomssa , R. Averbeck , T. C. Awes , B. Azmoun , V. Babintsev , G. Baksay , L. Baksay , A. Baldisseri , K. N. Barish , P. D. Barnes , B. Bassalleck , S. Bathe , S. Batsouli , V. Baublis , A. Bazilevsky , S. Belikov , R. Bennett , Y. Berdnikov , A. A. Bickley , J. G. Boissevain , H. Borel , K. Boyle , M. L. Brooks , H. Buesching , V. Bumazhnov , G. Bunce , S. Butsyk , S. Campbell , B. S. Chang , J. -L. Charvet , S. Chernichenko , C. Y. Chi , J. Chiba , M. Chiu , I. J. Choi , T. Chujo , P. Chung , A. Churyn , V. Cianciolo , C. R. Cleven , B. A. Cole , M. P. Comets , P. Constantin , M. Csanád , T. Csörgő , T. Dahms , K. Das , G. David , M. B. Deaton , K. Dehmelt , H. Delagrange , A. Denisov , D. d'Enterria , A. Deshpande , E. J. Desmond , O. Dietzsch , A. Dion , M. Donadelli , O. Drapier , A. Drees , A. K. Dubey , A. Durum , V. Dzhordzhadze , Y. V. Efremenko , J. Egdemir , F. Ellinghaus , W. S. Emam , A. Enokizono , H. En'yo , S. Esumi , K. O. Eyser , D. E. Fields , M. Finger , M. Finger, , F. Fleuret , S. L. Fokin , Z. Fraenkel , J. E. Frantz , A. Franz , A. D. Frawley , K. Fujiwara , Y. Fukao , T. Fusayasu , S. Gadrat , I. Garishvili , A. Glenn , H. Gong , M. Gonin , J. Gosset , Y. Goto , R. Granier de Cassagnac , N. Grau , S. V. Greene , M. Grosse Perdekamp , T. Gunji , H. -Å. Gustafsson , T. Hachiya , A. Hadj Henni , C. Haegemann , J. S. Haggerty , H. Hamagaki , R. Han , H. Harada , E. P. Hartouni , K. Haruna , E. Haslum , R. Hayano , X. He , M. Heffner , T. K. Hemmick , T. Hester , H. Hiejima , J. C. Hill , R. Hobbs , M. Hohlmann , W. Holzmann , K. Homma , B. Hong , T. Horaguchi , D. Hornback , T. Ichihara , H. Iinuma , K. Imai , M. Inaba , Y. Inoue , D. Isenhower , L. Isenhower , M. Ishihara , T. Isobe , M. Issah , A. Isupov , B. V. Jacak , J. Jia , J. Jin , O. Jinnouchi , B. M. Johnson , K. S. Joo , D. Jouan , F. Kajihara , S. Kametani , N. Kamihara , J. Kamin , M. Kaneta , J. H. Kang , H. Kanou , D. Kawall , A. V. Kazantsev , A. Khanzadeev , J. Kikuchi , D. H. Kim , D. J. Kim , E. Kim , E. Kinney , Á. Kiss , E. Kistenev , A. Kiyomichi , J. Klay , C. Klein-Boesing , L. Kochenda , V. Kochetkov , B. Komkov , M. Konno , D. Kotchetkov , A. Kozlov , A. Král , A. Kravitz , J. Kubart , G. J. Kunde , N. Kurihara , K. Kurita , M. J. Kweon , Y. Kwon , G. S. Kyle , R. Lacey , Y. S. Lai , J. G. Lajoie , A. Lebedev , D. M. Lee , M. K. Lee , T. Lee , M. J. Leitch , M. A. L. Leite , B. Lenzi , X. Li , T. Liška , A. Litvinenko , M. X. Liu , B. Love , D. Lynch , C. F. Maguire , Y. I. Makdisi , A. Malakhov , M. D. Malik , V. I. Manko , Y. Mao , L. Mašek , H. Masui , F. Matathias , M. McCumber , P. L. McGaughey , Y. Miake , P. Mikeš , K. Miki , T. E. Miller , A. Milov , S. Mioduszewski , M. Mishra , J. T. Mitchell , M. Mitrovski , A. Morreale , D. P. Morrison , T. V. Moukhanova , D. Mukhopadhyay , J. Murata , S. Nagamiya , Y. Nagata , J. L. Nagle , M. Naglis , I. Nakagawa , Y. Nakamiya , T. Nakamura , K. Nakano , J. Newby , M. Nguyen , B. E. Norman , R. Nouicer , A. S. Nyanin , E. O'Brien , S. X. Oda , C. A. Ogilvie , H. Ohnishi , M. Oka , K. Okada , O. O. Omiwade , A. Oskarsson , M. Ouchida , K. Ozawa , R. Pak , D. Pal , A. P. T. Palounek , V. Pantuev , V. Papavassiliou , J. Park , W. J. Park , S. F. Pate , H. Pei , J. -C. Peng , H. Pereira , V. Peresedov , D. Yu. Peressounko , C. Pinkenburg , M. L. Purschke , A. K. Purwar , H. Qu , J. Rak , A. Rakotozafindrabe , I. Ravinovich , K. F. Read , S. Rembeczki , M. Reuter , K. Reygers , V. Riabov , Y. Riabov , G. Roche , A. Romana , M. Rosati , S. S. E. Rosendahl , P. Rosnet , P. Rukoyatkin , V. L. Rykov , B. Sahlmueller , N. Saito , T. Sakaguchi , S. Sakai , H. Sakata , V. Samsonov , S. Sato , S. Sawada , J. Seele , R. Seidl , V. Semenov , R. Seto , D. Sharma , I. Shein , A. Shevel , T. -A. Shibata , K. Shigaki , M. Shimomura , K. Shoji , A. Sickles , C. L. Silva , D. Silvermyr , C. Silvestre , K. S. Sim , C. P. Singh , V. Singh , S. Skutnik , M. Slunečka , A. Soldatov , R. A. Soltz , W. E. Sondheim , S. P. Sorensen , I. V. Sourikova , F. Staley , P. W. Stankus , E. Stenlund , M. Stepanov , A. Ster , S. P. Stoll , T. Sugitate , C. Suire , J. Sziklai , T. Tabaru , S. Takagi , E. M. Takagui , A. Taketani , Y. Tanaka , K. Tanida , M. J. Tannenbaum , A. Taranenko , P. Tarján , T. L. Thomas , M. Togawa , A. Toia , J. Tojo , L. Tomášek , H. Torii , R. S. Towell , V-N. Tram , I. Tserruya , Y. Tsuchimoto , C. Vale , H. Valle , H. W. van Hecke , J. Velkovska , R. Vértesi , A. A. Vinogradov , M. Virius , V. Vrba , E. Vznuzdaev , M. Wagner , D. Walker , X. R. Wang , Y. Watanabe , J. Wessels , S. N. White , D. Winter , C. L. Woody , M. Wysocki , W. Xie , Y. L. Yamaguchi , A. Yanovich , Z. Yasin , J. Ying , S. Yokkaichi , G. R. Young , I. Younus , I. E. Yushmanov , W. A. Zajc , O. Zaudtke , C. Zhang , S. Zhou , J. Zimányi , L. Zolin

Nuclear suppression at RHIC and LHC in Glauber-Gribov approach

The approach to problem of nuclear shadowing based on Gribov Reggeon calculus is presented. Here the total cross section of $h A$ interaction is found in a parameter-free description, employing the new data on the gluon density of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Konrad Tywoniuk , Ionut Arsene , Larissa Bravina , Alexey Kaidalov , Eugene Zabrodin

Charged particle distributions and nuclear modification at high rapidities in d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

The measurements of the centrality dependence of $dN/d\eta$ and transverse momentum spectra from mid- to forward rapidity in d+Au collisions at $\sqrt{s_{_{\rm NN}}} =$ 200 GeV are reported. They provide a sensitive tool for understanding…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration

Direct photon measurement in Au+Au collisions at $\sqrt{s_{NN}}$=200GeV a t RHIC

Direct photon production in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV has been measured. The result is compared to several theoretical calculations, and found that it is not inconsistent with ones including thermal radiation from QGP or…

Nuclear Experiment · Physics 2009-11-11 Takao Sakaguchi

Nucleon Spin Structure and Large $p_T$ Processes at $pp$ Colliders

QCD motivated polarized parton distributions, evolved directly in $x$-space, are used to predict rates for prompt photon production at RHIC centre of mass energies. Various scenarios for the polarized gluon distributions are considered and…

High Energy Physics - Phenomenology · Physics 2009-09-25 L. E. Gordon

Exclusive production of rho^0 rho^0 pairs in gamma-gamma collisions at RHIC

We discuss exclusive electromagnetic production of two neutral $\rho$ mesons in coherent photon-photon processes in ultrarelativistic heavy-ion collisions. The cross section is calculated in the equivalent photon approximation (EPA). Both…

High Energy Physics - Phenomenology · Physics 2009-04-15 M. Kłusek , W. Schäfer , A. Szczurek