Related papers: A systematic study of direct photon production in …

Suppression of soft nuclear bremsstrahlung in proton-nucleus collisions

Photon energy spectra up to the kinematic limit have been measured in 190 MeV proton reactions with light and heavy nuclei to investigate the influence of the multiple-scattering process on the photon production. Relative to the predictions…

Nuclear Experiment · Physics 2008-11-26 M. J. van Goethem , L. Aphecetche , J. C. S. Bacelar , H. Delagrange , J. Diaz , D. d'Enterria , M. Hoefman , R. Holzmann , H. Huisman , N. Kalantar--Nayestanaki , A. Kugler , H. Loehner , G. Martinez , J. G. Messchendorp , R. W. Ostendorf , S. Schadmand , R. H. Siemssen , R. S. Simon , Y. Schutz , R. Turrisi , M. Volkerts , H. W. Wilschut

Direct photons in d+Au collisions at s_(NN)**(1/2)=200GeV with STAR

Results are presented of an ongoing analysis of direct photon production in s_(NN)=200GeV deuteron-gold collisions with the STAR experiment at RHIC. A significant excess of direct photons is observed near mid-rapidity 0<y<1 and found to be…

Nuclear Experiment · Physics 2012-08-27 STAR collaboration

Low-$p_T$ direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV

The measurement of direct photons from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=39$ and 62.4 GeV in the transverse-momentum range $0.4<p_T<3$ Gev/$c$ is presented by the PHENIX collaboration at the Relativistic Heavy Ion Collider. A…

Nuclear Experiment · Physics 2023-03-02 N. J. Abdulameer , U. Acharya , A. Adare , C. Aidala , N. N. Ajitanand , Y. Akiba , R. Akimoto , H. Al-Ta'ani , J. Alexander , M. Alfred , A. Angerami , K. Aoki , N. Apadula , Y. Aramaki , H. Asano , E. C. Aschenauer , E. T. Atomssa , T. C. Awes , B. Azmoun , V. Babintsev , M. Bai , B. Bannier , K. N. Barish , B. Bassalleck , S. Bathe , V. Baublis , S. Baumgart , A. Bazilevsky , R. Belmont , A. Berdnikov , Y. Berdnikov , L. Bichon , B. Blankenship , D. S. Blau , J. S. Bok , V. Borisov , K. Boyle , M. L. Brooks , H. Buesching , V. Bumazhnov , S. Butsyk , S. Campbell , V. Canoa Roman , P. Castera , C. -H. Chen , M. Chiu , C. Y. Chi , I. J. Choi , J. B. Choi , S. Choi , R. K. Choudhury , P. Christiansen , T. Chujo , O. Chvala , V. Cianciolo , Z. Citron , B. A. Cole , M. Connors , R. Corliss , Y. Corrales Morales , M. Csanád , T. Csörgő , L. D'Orazio , S. Dairaku , A. Datta , M. S. Daugherity , G. David , C. T. Dean , A. Denisov , A. Deshpande , E. J. Desmond , K. V. Dharmawardane , O. Dietzsch , L. Ding , A. Dion , M. Donadelli , V. Doomra , O. Drapier , A. Drees , K. A. Drees , J. M. Durham , A. Durum , S. Edwards , Y. V. Efremenko , T. Engelmore , A. Enokizono , R. Esha , K. O. Eyser , B. Fadem , W. Fan , D. E. Fields , M. Finger, , M. Finger , D. Firak , D. Fitzgerald , F. Fleuret , S. L. Fokin , J. E. Frantz , A. Franz , A. D. Frawley , Y. Fukao , T. Fusayasu , K. Gainey , C. Gal , A. Garishvili , I. Garishvili , M. Giles , A. Glenn , X. Gong , M. Gonin , Y. Goto , R. Granier de Cassagnac , N. Grau , S. V. Greene , M. Grosse Perdekamp , T. Gunji , L. Guo , H. -Å. Gustafsson , T. Hachiya , J. S. Haggerty , K. I. Hahn , H. Hamagaki , J. Hanks , M. Harvey , S. Hasegawa , K. Hashimoto , E. Haslum , R. Hayano , T. K. Hemmick , T. Hester , X. He , J. C. Hill , A. Hodges , R. S. Hollis , K. Homma , B. Hong , T. Horaguchi , Y. Hori , J. Huang , T. Ichihara , H. Iinuma , Y. Ikeda , J. Imrek , M. Inaba , A. Iordanova , D. Isenhower , M. Issah , D. Ivanishchev , B. V. Jacak , M. Javani , X. Jiang , Z. Ji , B. M. Johnson , K. S. Joo , D. Jouan , D. S. Jumper , J. Kamin , S. Kaneti , B. H. Kang , J. H. Kang , J. S. Kang , J. Kapustinsky , K. Karatsu , M. Kasai , D. Kawall , A. V. Kazantsev , T. Kempel , V. Khachatryan , A. Khanzadeev , A. Khatiwada , K. M. Kijima , B. I. Kim , C. Kim , D. J. Kim , E. -J. Kim , H. J. Kim , K. -B. Kim , T. Kim , Y. -J. Kim , Y. K. Kim , D. Kincses , A. Kingan , E. Kinney , Á. Kiss , E. Kistenev , J. Klatsky , D. Kleinjan , P. Kline , Y. Komatsu , B. Komkov , J. Koster , D. Kotchetkov , D. Kotov , L. Kovacs , F. Krizek , A. Král , G. J. Kunde , B. Kurgyis , K. Kurita , M. Kurosawa , Y. Kwon , G. S. Kyle , Y. S. Lai , J. G. Lajoie , D. Larionova , A. Lebedev , B. Lee , D. M. Lee , J. Lee , K. B. Lee , K. S. Lee , S. H. Lee , S. R. Lee , M. J. Leitch , M. A. L. Leite , M. Leitgab , B. Lewis , N. A. Lewis , S. H. Lim , L. A. Linden Levy , M. X. Liu , X. Li , D. A. Loomis , B. Love , S. Lökös , C. F. Maguire , T. Majoros , Y. I. Makdisi , M. Makek , A. Manion , V. I. Manko , E. Mannel , S. Masumoto , M. McCumber , P. L. McGaughey , D. McGlinchey , C. McKinney , M. Mendoza , B. Meredith , Y. Miake , T. Mibe , A. C. Mignerey , A. Milov , D. K. Mishra , J. T. Mitchell , M. Mitrankova , Iu. Mitrankov , Y. Miyachi , S. Miyasaka , A. K. Mohanty , S. Mohapatra , M. M. Mondal , H. J. Moon , T. Moon , D. P. Morrison , S. Motschwiller , T. V. Moukhanova , A. Muhammad , B. Mulilo , T. Murakami , J. Murata , A. Mwai , T. Nagae , S. Nagamiya , J. L. Nagle , M. I. Nagy , I. Nakagawa , Y. Nakamiya , K. R. Nakamura , T. Nakamura , K. Nakano , C. Nattrass , A. Nederlof , S. Nelson , M. Nihashi , R. Nouicer , T. Novák , N. Novitzky , G. Nukazuka , A. S. Nyanin , E. O'Brien , C. A. Ogilvie , J. Oh , K. Okada , M. Orosz , J. D. Osborn , A. Oskarsson , M. Ouchida , K. Ozawa , R. Pak , V. Pantuev , V. Papavassiliou , B. H. Park , I. H. Park , J. S. Park , S. Park , S. K. Park , L. Patel , M. Patel , S. F. Pate , H. Pei , J. -C. Peng , W. Peng , H. Pereira , D. V. Perepelitsa , D. Yu. Peressounko , C. E. PerezLara , R. Petti , C. Pinkenburg , R. P. Pisani , M. Potekhin , M. Proissl , A. Pun , M. L. Purschke , H. Qu , P. V. Radzevich , J. Rak , N. Ramasubramanian , I. Ravinovich , K. F. Read , D. Reynolds , V. Riabov , Y. Riabov , E. Richardson , D. Richford , D. Roach , G. Roche , S. D. Rolnick , M. Rosati , J. Runchey , B. Sahlmueller , N. Saito , T. Sakaguchi , H. Sako , V. Samsonov , M. Sano , M. Sarsour , S. Sato , S. Sawada , K. Sedgwick , R. Seidl , A. Sen , R. Seto , D. Sharma , I. Shein , Z. Shi , M. Shibata , T. -A. Shibata , K. Shigaki , M. Shimomura , K. Shoji , P. Shukla , A. Sickles , C. L. Silva , D. Silvermyr , K. S. Sim , B. K. Singh , C. P. Singh , V. Singh , M. Slunečka , K. L. Smith , R. A. Soltz , W. E. Sondheim , S. P. Sorensen , I. V. Sourikova , P. W. Stankus , E. Stenlund , M. Stepanov , A. Ster , S. P. Stoll , T. Sugitate , A. Sukhanov , J. Sun , Z. Sun , J. Sziklai , E. M. Takagui , R. Takahama , A. Takahara , A. Taketani , Y. Tanaka , S. Taneja , K. Tanida , M. J. Tannenbaum , S. Tarafdar , A. Taranenko , E. Tennant , H. Themann , T. Todoroki , L. Tomášek , M. Tomášek , H. Torii , R. S. Towell , I. Tserruya , Y. Tsuchimoto , T. Tsuji , Y. Ueda , B. Ujvari , C. Vale , H. W. van Hecke , M. Vargyas , E. Vazquez-Zambrano , A. Veicht , R. Vértesi , J. Velkovska , M. Virius , A. Vossen , V. Vrba , E. Vznuzdaev , X. R. Wang , Z. Wang , D. Watanabe , K. Watanabe , Y. Watanabe , Y. S. Watanabe , F. Wei , R. Wei , S. N. White , D. Winter , S. Wolin , C. P. Wong , C. L. Woody , M. Wysocki , B. Xia , Y. L. Yamaguchi , R. Yang , A. Yanovich , J. Ying , S. Yokkaichi , I. Younus , Z. You , I. E. Yushmanov , W. A. Zajc , A. Zelenski , L. Zou

Photon production in relativistic heavy ion collisions

The production of single photons in relativistic heavy ion collisions at CERN SPS, BNL RHIC and CERN LHC energies is re-examined in view of the recent studies of Aurenche et al which show that the rate of photon production from quark gluon…

Nuclear Theory · Physics 2016-08-15 Dinesh Kumar Srivastava

Thermal Photons and Collective Flow at the Relativistic Heavy-Ion Collider

We update our calculations of thermal-photon production in nuclear collisions at the Relativistic Heavy-Ion Collider (RHIC). Specifically, we address the recent experimental observation of an elliptic flow of direct photons comparable in…

High Energy Physics - Phenomenology · Physics 2011-11-15 H. van Hees , C. Gale , R. Rapp

Photons from the Early Stages of Relativistic Heavy Ion Collisions

We present results about photons production in relativistic heavy ion collisions. The main novelty of our study is the calculation of the contribution of the early stage photons to the photon spectrum. The initial stage is modeled by an…

Nuclear Theory · Physics 2017-08-02 L. Oliva , M. Ruggieri , S. Plumari , F. Scardina , G. X. Peng , V. Greco

Measurement of direct photon production in p + p collisions at sqrt(s) = 200 GeV

Cross sections for mid-rapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported for 3 < p_T < 16 GeV/c. Next-to-leading order (NLO) perturbative QCD (pQCD) describes the data well…

High Energy Physics - Experiment · Physics 2008-11-26 PHENIX Collaboration , S. S. Adler

Jet energy loss, photon production, and photon-hadron correlations at RHIC

Jet energy loss, photon production and photon-hadron correlations are studied together at high transverse momentum in relativistic heavy-ion collisions at RHIC energies. The modification of hard jets traversing a hot and dense nuclear…

High Energy Physics - Phenomenology · Physics 2010-02-22 Guang-You Qin , Jorg Ruppert , Charles Gale , Sangyong Jeon , Guy D. Moore

Direct Photons at RHIC

A brief overview of direct-photon measurements in p+p and Au+Au collisions at sqrt(s_NN) = 200 GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) is given. Direct-photon yields for pT > 4 GeV/c and photon-hadron…

Nuclear Experiment · Physics 2019-08-13 Klaus Reygers

Observation of Direct Photons in Central 158 A GeV 208Pb+208Pb Collisions

A measurement of direct photon production in 208Pb + 208Pb collisions at 158 A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse…

Nuclear Experiment · Physics 2016-09-08 WA98 Collaboration , M. M. Aggarwal

Direct Photon Production in Au+Au Collisions at RHIC-PHENIX Experiment

Direct photons have been measured with the PHENIX experiment in Au+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV. The direct photon result obtained with PHENIX-EMCal up to 18 GeV/$c$ is consistent with the NLO pQCD calculation scaled by…

Nuclear Experiment · Physics 2008-11-26 Tadaaki Isobe

Particle production from gluon-nucleon interactions in relativistic heavy ion collisions

We propose a particle production mechanism analogous to the particle photoproduction processes, arising from the gluon-nucleon interactions in relativistic heavy ion collisions. The comparison is made on the effect of the gluon-nucleon…

Nuclear Theory · Physics 2024-06-25 Yong-Ping Fu , Fei-Jie Huang , Qi-Hui Chen

A direct probe of the in-medium pn scattering cross section

Hard photon production from neutron-proton bremsstrahlung in intermediate energy heavy-ion reactions is examined as a probe of the in-medium pn scattering cross section within a transport model. Uncertainty of photon production probability…

Nuclear Theory · Physics 2011-10-31 Gao-Chan Yong , Wei Zuo , Xun-Chao Zhang

Direct Photons from Relativistic Heavy-Ion Collisions

Direct photons have been proposed as a promising signature for the quark-gluon plasma (QGP) formation in relativistic heavy-ion collisions. Recently WA98 presented the first data on direct photons in Pb+Pb-collisions at SPS. At the same…

High Energy Physics - Phenomenology · Physics 2009-11-07 Thomas Peitzmann , Markus H. Thoma

Photoproduction in Ultra-Peripheral Heavy Ion Collisions at STAR

We present recent STAR results on photoproduction in ultra-peripheral relativistic heavy ion collisions. In these collisions the impact parameter of the beam particles is larger than the sum of their nuclear radii, so that they interact via…

Nuclear Experiment · Physics 2019-08-13 Boris Grube

Nonprompt direct-photon production in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV

The measurement of the direct-photon spectrum from Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV is presented by the PHENIX collaboration using the external-photon-conversion technique for 0\%--93\% central collisions in a…

Nuclear Experiment · Physics 2024-04-22 U. A. Acharya , A. Adare , C. Aidala , N. N. Ajitanand , Y. Akiba , M. Alfred , N. Apadula , H. Asano , B. Azmoun , V. Babintsev , M. Bai , N. S. Bandara , B. Bannier , K. N. Barish , S. Bathe , A. Bazilevsky , M. Beaumier , S. Beckman , R. Belmont , A. Berdnikov , Y. Berdnikov , L. Bichon , B. Blankenship , D. S. Blau , J. S. Bok , V. Borisov , K. Boyle , M. L. Brooks , J. Bryslawskyj , V. Bumazhnov , S. Campbell , V. Canoa Roman , C. -H. Chen , M. Chiu , C. Y. Chi , I. J. Choi , J. B. Choi , T. Chujo , Z. Citron , M. Connors , R. Corliss , Y. Corrales Morales , M. Csanád , T. Csörgő , T. W. Danley , A. Datta , M. S. Daugherity , G. David , C. T. Dean , K. DeBlasio , K. Dehmelt , A. Denisov , A. Deshpande , E. J. Desmond , A. Dion , P. B. Diss , J. H. Do , V. Doomra , A. Drees , K. A. Drees , J. M. Durham , A. Durum , A. Enokizono , R. Esha , B. Fadem , W. Fan , N. Feege , D. E. Fields , M. Finger, , M. Finger , D. Fitzgerald , S. L. Fokin , J. E. Frantz , A. Franz , A. D. Frawley , P. Gallus , C. Gal , P. Garg , H. Ge , M. Giles , F. Giordano , A. Glenn , Y. Goto , N. Grau , S. V. Greene , M. Grosse Perdekamp , T. Gunji , T. Guo , T. Hachiya , J. S. Haggerty , K. I. Hahn , H. Hamagaki , H. F. Hamilton , J. Hanks , S. Y. Han , M. Harvey , S. Hasegawa , T. O. S. Haseler , K. Hashimoto , T. K. Hemmick , X. He , J. C. Hill , A. Hodges , R. S. Hollis , K. Homma , B. Hong , T. Hoshino , N. Hotvedt , J. Huang , K. Imai , M. Inaba , A. Iordanova , D. Isenhower , D. Ivanishchev , B. V. Jacak , M. Jezghani , X. Jiang , Z. Ji , B. M. Johnson , D. Jouan , D. S. Jumper , S. Kanda , J. H. Kang , D. Kawall , A. V. Kazantsev , J. A. Key , V. Khachatryan , A. Khanzadeev , A. Khatiwada , B. Kimelman , C. Kim , D. J. Kim , E. -J. Kim , G. W. Kim , M. Kim , T. Kim , D. Kincses , A. Kingan , E. Kistenev , R. Kitamura , J. Klatsky , D. Kleinjan , P. Kline , T. Koblesky , B. Komkov , D. Kotov , L. Kovacs , K. Kurita , M. Kurosawa , Y. Kwon , J. G. Lajoie , D. Larionova , A. Lebedev , S. Lee , S. H. Lee , M. J. Leitch , N. A. Lewis , S. H. Lim , M. X. Liu , X. Li , X. Li , D. A. Loomis , D. Lynch , S. Lökös , T. Majoros , Y. I. Makdisi , M. Makek , A. Manion , V. I. Manko , E. Mannel , M. McCumber , P. L. McGaughey , D. McGlinchey , C. McKinney , A. Meles , M. Mendoza , A. C. Mignerey , A. Milov , D. K. Mishra , J. T. Mitchell , M. Mitrankova , Iu. Mitrankov , S. Miyasaka , S. Mizuno , A. K. Mohanty , M. M. Mondal , P. Montuenga , T. Moon , D. P. Morrison , T. V. Moukhanova , B. Mulilo , T. Murakami , J. Murata , A. Mwai , K. Nagashima , J. L. Nagle , M. I. Nagy , I. Nakagawa , H. Nakagomi , K. Nakano , C. Nattrass , S. Nelson , P. K. Netrakanti , T. Niida , S. Nishimura , R. Nouicer , N. Novitzky , T. Novák , G. Nukazuka , A. S. Nyanin , E. O'Brien , C. A. Ogilvie , J. D. Orjuela Koop , J. D. Osborn , A. Oskarsson , K. Ozawa , R. Pak , V. Pantuev , V. Papavassiliou , J. S. Park , S. Park , M. Patel , S. F. Pate , J. -C. Peng , W. Peng , D. V. Perepelitsa , G. D. N. Perera , D. Yu. Peressounko , C. E. PerezLara , J. Perry , R. Petti , C. Pinkenburg , R. Pinson , R. P. Pisani , M. Potekhin , A. Pun , M. L. Purschke , P. V. Radzevich , J. Rak , N. Ramasubramanian , B. J. Ramson , I. Ravinovich , K. F. Read , D. Reynolds , V. Riabov , Y. Riabov , D. Richford , T. Rinn , S. D. Rolnick , M. Rosati , Z. Rowan , J. G. Rubin , J. Runchey , B. Sahlmueller , N. Saito , T. Sakaguchi , H. Sako , V. Samsonov , M. Sarsour , S. Sato , B. Schaefer , B. K. Schmoll , K. Sedgwick , R. Seidl , A. Sen , R. Seto , P. Sett , A. Sexton , D. Sharma , I. Shein , T. -A. Shibata , K. Shigaki , M. Shimomura , P. Shukla , A. Sickles , C. L. Silva , D. Silvermyr , B. K. Singh , C. P. Singh , V. Singh , M. Slunečka , K. L. Smith , M. Snowball , R. A. Soltz , W. E. Sondheim , S. P. Sorensen , I. V. Sourikova , P. W. Stankus , M. Stepanov , S. P. Stoll , T. Sugitate , A. Sukhanov , T. Sumita , J. Sun , Z. Sun , J. Sziklai , A. Taketani , K. Tanida , M. J. Tannenbaum , S. Tarafdar , A. Taranenko , R. Tieulent , A. Timilsina , T. Todoroki , M. Tomášek , C. L. Towell , R. Towell , R. S. Towell , I. Tserruya , Y. Ueda , B. Ujvari , H. W. van Hecke , J. Velkovska , M. Virius , V. Vrba , X. R. Wang , Y. Watanabe , Y. S. Watanabe , F. Wei , A. S. White , C. P. Wong , C. L. Woody , M. Wysocki , B. Xia , L. Xue , S. Yalcin , Y. L. Yamaguchi , A. Yanovich , I. Yoon , J. H. Yoo , I. E. Yushmanov , H. Yu , W. A. Zajc , A. Zelenski , S. Zhou , L. Zou

Systematic studies of the centrality dependence of soft photon production in Au+Au collision with PHENIX

Since the earliest days of Heavy Ion Physics thermal soft photon radiation emitted during the reaction had been theorized as a smoking gun signal for formation of a quark-gluon plasma and as a tool to characterize its properties. In recent…

Nuclear Experiment · Physics 2015-06-22 Benjamin Bannier

Multi-messenger heavy-ion collision physics

This work studies the production of direct photons in relativistic nuclear collisions, along with the production of hadrons. Radiation from the very first instants to the final moments of the evolution is included. The hybrid model used…

Nuclear Theory · Physics 2022-02-01 Charles Gale , Jean-François Paquet , Björn Schenke , Chun Shen

Direct photons at low transverse momentum -- a QGP signal in pp collisions at LHC

We investigate photon production in a scenario of quark-gluon plasma formation in proton-proton scattering at 7 TeV. It is shown that thermal photon yields increase quadratically with the charged particle multiplicity. This gives an…

High Energy Physics - Phenomenology · Physics 2015-03-18 Fu-Ming Liu , Klaus Werner

Direct photon radiation from a rich baryon Quark-Gluon Plasma system

The direct photon radiation from a hot and slightly strong interacting fireball system of a rich baryon quark-gluon plasma, using the Boltzmann distribution function for the incoming particles and Bose-Einstein distribution for gluon and…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. S. Singh