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Pion femtoscopy in p+p collisions at sqrt(s)=200 GeV

The STAR Collaboration at RHIC has measured two-pion correlation functions from p+p collisions at sqrt(s)=200 GeV. Spatial scales are extracted via a femtoscopic analysis of the correlations, though this analysis is complicated by the…

Nuclear Experiment · Physics 2015-03-14 M. M. Aggarwal , Z. Ahammed , A. V. Alakhverdyants , I. Alekseev , J. Alford , B. D. Anderson , D. Arkhipkin , G. S. Averichev , J. Balewski , L. S. Barnby , S. Baumgart , D. R. Beavis , R. Bellwied , M. J. Betancourt , R. R. Betts , A. Bhasin , A. K. Bhati , H. Bichsel , J. Bielcik , J. Bielcikova , B. Biritz , L. C. Bland , 3 B. E. Bonner , J. Bouchet , E. Braidot , A. V. Brandin , A. Bridgeman , E. Bruna , S. Bueltmann , I. Bunzarov , T. P. Burton , X. Z. Cai , H. Caines , M. Calderón de la Barca Sánchez , O. Catu , D. Cebra , R. Cendejas , M. C. Cervantes , Z. Chajecki , P. Chaloupka , S. Chattopadhyay , H. F. Chen , J. H. Chen , J. Y. Chen , J. Cheng , M. Cherney , A. Chikanian , K. E. Choi , W. Christie , P. Chung , R. F. Clarke , M. J. M. Codrington , R. Corliss , J. G. Cramer , H. J. Crawford , D. Das , S. Dash , A. Davila Leyva , L. C. De Silva , R. R. Debbe , T. G. Dedovich , A. A. Derevschikov , R. Derradi de Souza , L. Didenko , P. Djawotho , S. M. Dogra , X. Dong , J. L. Drachenberg , J. E. Draper , J. C. Dunlop , M. R. Dutta Mazumdar , L. G. Efimov , E. Elhalhuli , M. Elnimr , J. Engelage , G. Eppley , B. Erazmus , M. Estienne , L. Eun , O. Evdokimov , P. Fachini , R. Fatemi , J. Fedorisin , R. G. Fersch , P. Filip , E. Finch , V. Fine , Y. Fisyak , C. A. Gagliardi , D. R. Gangadharan , M. S. Ganti , E. J. Garcia-Solis , A. Geromitsos , F. Geurts , V. Ghazikhanian , P. Ghosh , Y. N. Gorbunov , A. Gordon , O. Grebenyuk , D. Grosnick , S. M. Guertin , A. Gupta , N. Gupta , W. Guryn , B. Haag , A. Hamed , L-X. Han , J. W. Harris , J. P. Hays-Wehle , M. Heinz , S. Heppelmann , A. Hirsch , E. Hjort , A. M. Hoffman , G. W. Hoffmann , D. J. Hofman , B. Huang , H. Z. Huang , T. J. Humanic , L. Huo , G. Igo , P. Jacobs , W. W. Jacobs , C. Jena , F. Jin , C. L. Jones , P. G. Jones , J. Joseph , E. G. Judd , S. Kabana , K. Kajimoto , K. Kang , J. Kapitan , K. Kauder , D. Keane , A. Kechechyan , D. Kettler , D. P. Kikola , J. Kiryluk , A. Kisiel , S. R. Klein , A. G. Knospe , A. Kocoloski , D. D. Koetke , T. Kollegger , J. Konzer , I. Koralt , L. Koroleva , W. Korsch , L. Kotchenda , V. Kouchpil , P. Kravtsov , K. Krueger , M. Krus , L. Kumar , P. Kurnadi , M. A. C. Lamont , J. M. Landgraf , S. LaPointe , J. Lauret , A. Lebedev , R. Lednicky , C-H. Lee , J. H. Lee , W. Leight , M. J. LeVine , C. Li , L. Li , N. Li , W. Li , X. Li , X. Li , Y. Li , Z. M. Li , G. Lin , S. J. Lindenbaum , M. A. Lisa , F. Liu , H. Liu , J. Liu , T. Ljubicic , W. J. Llope , R. S. Longacre , W. A. Love , Y. Lu , E. V. Lukashov , X. Luo , G. L. Ma , Y. G. Ma , D. P. Mahapatra , R. Majka , O. I. Mall , L. K. Mangotra , R. Manweiler , S. Margetis , C. Markert , H. Masui , H. S. Matis , Yu. A. Matulenko , D. McDonald , T. S. McShane , A. Meschanin , R. Milner , N. G. Minaev , S. Mioduszewski , A. Mischke , M. K. Mitrovski , B. Mohanty , M. M. Mondal. B. Morozov , D. A. Morozov , M. G. Munhoz , B. K. Nandi , C. Nattrass , T. K. Nayak , J. M. Nelson , P. K. Netrakanti , M. J. Ng , L. V. Nogach , S. B. Nurushev , G. Odyniec , A. Ogawa , V. Okorokov , E. W. Oldag , D. Olson , M. Pachr , B. S. Page , S. K. Pal , Y. Pandit , Y. Panebratsev , T. Pawlak , T. Peitzmann , V. Perevoztchikov , C. Perkins , W. Peryt , S. C. Phatak , P. Pile , M. Planinic , M. A. Ploskon , J. Pluta , D. Plyku , N. Poljak , A. M. Poskanzer , B. V. K. S. Potukuchi , C. B. Powell , D. Prindle , C. Pruneau , N. K. Pruthi , P. R. Pujahari , J. Putschke , H. Qiu , R. Raniwala , S. Raniwala , R. L. Ray , R. Redwine , R. Reed , H. G. Ritter , J. B. Roberts , O. V. Rogachevsky , J. L. Romero , A. Rose , C. Roy , L. Ruan , R. Sahoo , S. Sakai , I. Sakrejda , T. Sakuma , S. Salur , J. Sandweiss , E. Sangaline , J. Schambach , R. P. Scharenberg , N. Schmitz , T. R. Schuster , J. Seele , J. Seger , I. Selyuzhenkov , P. Seyboth , E. Shahaliev , M. Shao , M. Sharma , S. S. Shi , E. P. Sichtermann , F. Simon , R. N. Singaraju , M. J. Skoby , N. Smirnov , P. Sorensen , J. Sowinski , H. M. Spinka , B. Srivastava , T. D. S. Stanislaus , D. Staszak , J. R. Stevens , R. Stock , M. Strikhanov , B. Stringfellow , A. A. P. Suaide , M. C. Suarez , N. L. Subba , M. Sumbera , X. M. Sun , Y. Sun , Z. Sun , B. Surrow , D. N. Svirida , T. J. M. Symons , A. Szanto de Toledo , J. Takahashi , A. H. Tang , Z. Tang , L. H. Tarini , T. Tarnowsky , D. Thein , J. H. Thomas , J. Tian , A. R. Timmins , S. Timoshenko , D. Tlusty , M. Tokarev , V. N. Tram , S. Trentalange , R. E. Tribble , O. D. Tsai , J. Ulery , T. Ullrich , D. G. Underwood , G. Van Buren , M. van Leeuwen , G. van Nieuwenhuizen , J. A. Vanfossen, , R. Varma , G. M. S. Vasconcelos , A. N. Vasiliev , F. Videbaek , Y. P. Viyogi , S. Vokal , S. A. Voloshin , M. Wada , M. Walker , F. Wang , G. Wang , H. Wang , J. S. Wang , Q. Wang , X. L. Wang , Y. Wang , G. Webb , J. C. Webb , G. D. Westfall , C. Whitten , H. Wieman , S. W. Wissink , R. Witt , Y. F. Wu , W. Xie , H. Xu , N. Xu , Q. H. Xu , W. Xu , Y. Xu , Z. Xu , L. Xue , Y. Yang , P. Yepes , K. Yip , I-K. Yoo , Q. Yue , M. Zawisza , H. Zbroszczyk , W. Zhan , J. B. Zhang , S. Zhang , W. M. Zhang , X. P. Zhang , Y. Zhang , Z. P. Zhang , J. Zhao , C. Zhong , J. Zhou , W. Zhou , X. Zhu , Y. H. Zhu , R. Zoulkarneev , Y. Zoulkarneeva

Jet Modification in Heavy Ion Collisions at RHIC

These proceedings present a brief overview of the main results on jet-modifications in heavy ion collisions at RHIC. In heavy ion collisions, jets are studied using single hadron spectra and di-hadron correlations with a high-\pt{} trigger…

Nuclear Experiment · Physics 2008-08-07 M. van Leeuwen

Jet-like correlations with respect to K$^{0}_{\rm S}$ and $\Lambda$ ($\bar{\Lambda}$) in pp and central Pb-Pb collisions at $\mathbf{\it\sqrt{s_\mathrm{NN}}}$ = 5.02 TeV

Two-particle correlations with ${\rm K}^{0}_{\rm{S}}$, $\Lambda$/$\bar{\Lambda}$, and charged hadrons as trigger particles in the transverse momentum range $8 < p_\mathrm{T,trig}<16$ GeV/$c$, and associated charged particles within $1 <…

Nuclear Experiment · Physics 2023-06-22 ALICE Collaboration

Correlations of Electrons from Heavy Flavor Decay with Hadrons at PHENIX

One unexpected recent result from heavy-ion collisions is the large suppression and elliptic flow of electrons from heavy flavor decay. Further measurements of properties of electrons from heavy flavor decay are crucial to understanding the…

Nuclear Experiment · Physics 2019-08-13 Anne Sickles

Exploring Jet Properties in p-p Collisions at 200 GeV with STAR

The mechanisms underlying hadronization are not well understood, both in vacuum and in hot QCD matter. Precise characterization of jet fragmentation to hadrons in p-p collisions will help elucidate the fundamental process of hadronization,…

Nuclear Experiment · Physics 2009-11-18 Helen Caines

Study Medium-induced Parton Energy Loss in Gamma+jet Events of High-Energy Heavy-Ion Collisions

The effect of medium-induced parton energy loss on jet fragmentation is studied in high-energy heavy-ion collisions. It is shown that an effective jet fragmentation function can be extracted from the inclusive $p_T$ spectrum of charged…

High Energy Physics - Phenomenology · Physics 2008-11-26 Xin-Nian Wang , Zheng Huang

Estimation of non-femtoscopic effects in p+p and p+A collisions at RHIC energies using PYTHIA and HIJING generators

The spatial extents of particle emission source in high-energy collisions can be measured using two-particle femtoscopic correlations. In collisions with small multipli cities, such as proton-proton collisions, correlation functions can be…

High Energy Physics - Experiment · Physics 2017-12-29 E Khyzhniak , N Ermakov , G Nigmatkulov

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

We calculate the spectra of high energy photons emitted in relativistic Au+Au collisions for various centralities and compare to data recently collected at the Relativistic Heavy Ion Collider by the PHENIX collaboration. Our results for…

Nuclear Theory · Physics 2009-11-11 R. J. Fries , B. Muller , D. K. Srivastava

Thermal photon measurements at PHENIX

Photons are emitted at all stages of relativistic heavy-ion collisions and do not interact with the medium strongly. With access to the versatility of RHIC, measurements of low momentum direct photons are made possible across different…

Nuclear Experiment · Physics 2023-09-12 Roli Esha

Studies of jet quenching using isolated-photon + jet correlations in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV

Results from the first study of isolated-photon + jet correlations in relativistic heavy ion collisions are reported. The analysis uses data from PbPb collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair corresponding to an…

Nuclear Experiment · Physics 2013-01-25 CMS Collaboration

Jet Structure of Baryon Excess in Au+Au Collisions at sqrt(s_NN) = 200 GeV

Two particle correlations between identified meson and baryon trigger particles with 2.5 < p_T < 4.0 GeV/c and lower p_T charged hadrons have been measured at midrapidity by the PHENIX experiment at RHIC in p+p, d+Au and Au+Au collisions at…

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

Detailed measurement of the e+e- pair continuum in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV and implications for direct photon production

PHENIX has measured the e^+e^- pair continuum in sqrt(s_NN)=200 GeV Au+Au and p+p collisions over a wide range of mass and transverse momenta. The e^+e^- yield is compared to the expectations from hadronic sources, based on PHENIX…

Nuclear Experiment · Physics 2010-04-14 PHENIX Collaboration , A. Adare

Identified Particle Correlations at RHIC: Medium Interactions & Modified Fragmentation

Azimuthal angle two particle correlations have been shown to be a powerful probe for extracting novel features of jet induced correlations produced in Au+Au collisions at RHIC. At intermediate $p_T$, 2-5GeV/c, the jets have been shown to be…

Nuclear Experiment · Physics 2009-01-16 Anne Sickles

Results from PHENIX at RHIC with Implications for LHC

This article is based on my Proceedings for the 47th Course of the International School of Subnuclear Physics on the Most Unexpected at LHC and the Status of High Energy Frontier, Erice, Sicily, Italy, 2009. Results from the PHENIX…

Nuclear Experiment · Physics 2014-06-04 M. J. Tannenbaum

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

Measurement of Direct-Photon Cross Section and Double-Helicity Asymmetry at $\sqrt{s}=510$ GeV in $\vec{p}+\vec{p}$ Collisions

We present measurements of the cross section and double-helicity asymmetry $A_{LL}$ of direct-photon production in $\vec{p}+\vec{p}$ collisions at $\sqrt{s}=510$ GeV. The measurements have been performed at midrapidity ($|\eta|<0.25$) with…

High Energy Physics - Experiment · Physics 2023-07-05 PHENIX Collaboration , N. J. Abdulameer , U. Acharya , A. Adare , C. Aidala , N. N. Ajitanand , Y. Akiba , R. Akimoto , M. Alfred , N. Apadula , Y. Aramaki , H. Asano , E. T. Atomssa , T. C. Awes , 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 , D. Black , B. Blankenship , J. S. Bok , V. Borisov , K. Boyle , M. L. Brooks , J. Bryslawskyj , H. Buesching , 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 , A. Datta , M. S. Daugherity , G. David , C. T. Dean , K. DeBlasio , K. Dehmelt , A. Denisov , A. Deshpande , E. J. Desmond , L. Ding , A. Dion , V. Doomra , J. H. Do , A. Drees , K. A. Drees , J. M. Durham , A. Durum , H. En'yo , A. Enokizono , R. Esha , B. Fadem , W. Fan , N. Feege , D. E. Fields , M. Finger, , M. Finger , D. Firak , 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 , H. Guragain , Y. Gu , T. Hachiya , J. S. Haggerty , K. I. Hahn , H. Hamagaki , J. Hanks , S. Y. Han , M. Harvey , S. Hasegawa , T. K. Hemmick , X. He , J. C. Hill , A. Hodges , R. S. Hollis , K. Homma , B. Hong , T. Hoshino , J. Huang , Y. Ikeda , K. Imai , Y. Imazu , M. Inaba , A. Iordanova , D. Isenhower , D. Ivanishchev , B. V. Jacak , S. J. Jeon , M. Jezghani , X. Jiang , Z. Ji , B. M. Johnson , E. Joo , K. S. Joo , D. Jouan , D. S. Jumper , J. H. Kang , J. S. Kang , D. Kawall , A. V. Kazantsev , J. A. Key , V. Khachatryan , A. Khanzadeev , A. Khatiwada , K. Kihara , C. Kim , D. H. Kim , D. J. Kim , E. -J. Kim , H. -J. Kim , M. Kim , T. Kim , Y. K. Kim , D. Kincses , A. Kingan , E. Kistenev , J. Klatsky , D. Kleinjan , P. Kline , T. Koblesky , M. Kofarago , J. Koster , D. Kotov , L. Kovacs , B. Kurgyis , K. Kurita , M. Kurosawa , Y. Kwon , J. G. Lajoie , D. Larionova , A. Lebedev , K. B. Lee , S. H. Lee , M. J. Leitch , M. Leitgab , N. A. Lewis , S. H. Lim , M. X. Liu , 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 , B. Meredith , Y. Miake , A. C. Mignerey , A. J. Miller , A. Milov , D. K. Mishra , J. T. Mitchell , M. Mitrankova , Iu. Mitrankov , S. Miyasaka , S. Mizuno , M. M. Mondal , P. Montuenga , T. Moon , D. P. Morrison , T. V. Moukhanova , A. Muhammad , B. Mulilo , T. Murakami , J. Murata , A. Mwai , S. Nagamiya , J. L. Nagle , M. I. Nagy , I. Nakagawa , H. Nakagomi , K. Nakano , C. Nattrass , S. Nelson , P. K. Netrakanti , M. Nihashi , T. Niida , R. Nouicer , N. Novitzky , G. Nukazuka , A. S. Nyanin , E. O'Brien , C. A. Ogilvie , J. Oh , J. D. Orjuela Koop , M. Orosz , J. D. Osborn , A. Oskarsson , K. Ozawa , R. Pak , V. Pantuev , V. Papavassiliou , J. S. Park , S. Park , L. Patel , 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 , I. Ravinovich , K. F. Read , D. Reynolds , V. Riabov , Y. Riabov , D. Richford , N. Riveli , D. Roach , S. D. Rolnick , M. Rosati , Z. Rowan , J. G. Rubin , J. Runchey , N. Saito , T. Sakaguchi , H. Sako , V. Samsonov , M. Sarsour , S. Sato , S. Sawada , B. Schaefer , B. K. Schmoll , K. Sedgwick , J. Seele , R. Seidl , A. Sen , R. Seto , P. Sett , A. Sexton , D. Sharma , I. Shein , M. Shibata , T. -A. Shibata , K. Shigaki , M. Shimomura , Z. Shi , P. Shukla , A. Sickles , C. L. Silva , D. Silvermyr , 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 , M. Stepanov , S. P. Stoll , T. Sugitate , A. Sukhanov , T. Sumita , J. Sun , Z. Sun , J. Sziklai , R. Takahama , A. Takahara , A. Taketani , K. Tanida , M. J. Tannenbaum , S. Tarafdar , A. Taranenko , A. Timilsina , T. Todoroki , M. Tomášek , H. Torii , M. Towell , R. Towell , R. S. Towell , I. Tserruya , Y. Ueda , B. Ujvari , H. W. van Hecke , M. Vargyas , J. Velkovska , M. Virius , V. Vrba , E. Vznuzdaev , X. R. Wang , Z. Wang , D. Watanabe , Y. Watanabe , Y. S. Watanabe , F. Wei , S. Whitaker , S. Wolin , C. P. Wong , C. L. Woody , M. Wysocki , B. Xia , L. Xue , S. Yalcin , Y. L. Yamaguchi , A. Yanovich , I. Yoon , I. Younus , I. E. Yushmanov , W. A. Zajc , A. Zelenski , L. Zou

Dilepton spectra in p+p and Au+Au collisions at RHIC

This work presents measurements of electron-positron pairs from p+p collisions at sqrt(s) = 200 GeV collected during the 2005 RHIC run and compares them to results from Au+Au collisions at sqrt(s_NN) = 200 GeV taken in 2004 with the PHENIX…

Nuclear Experiment · Physics 2008-10-24 Torsten Dahms

Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p+p Collisions at sqrt(s)=200 GeV

The momentum distribution of electrons from semi-leptonic decays of charm and bottom for mid-rapidity |y|<0.35 in p+p collisions at sqrt(s)=200 GeV is measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) over the…

High Energy Physics - Experiment · Physics 2010-05-12 PHENIX Collaboration , A. Adare

Measurement of photons via conversion pairs in Au+Au collisions at sqrt(s_NN) = 200 GeV with the PHENIX experiment at RHIC

Thermal photons can provide information on the temperature of the new state of matter created at RHIC. In the p_T region of 1--3 GeV/c thermal photons are expected to be the dominant direct photon source. Therefore, a possible excess…

Nuclear Experiment · Physics 2019-08-13 Torsten Dahms

Measurement of prompt photon in sqrt(s)=200GeV pp collisions

This report presents the preliminary result for the prompt photon production cross section in proton-proton collisions in the mid-rapidity region using the PHENIX detector. The NLO pQCD calculation is in good agreement with the data. The…

High Energy Physics - Experiment · Physics 2019-08-14 K. Okada