Related papers: Production and evolution path of dileptons at HADE…

Measurements of Dielectron Production in Au$+$Au Collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV from the STAR Experiment

We report on measurements of dielectron ($e^+e^-$) production in Au$+$Au collisions at a center-of-mass energy of 200 GeV per nucleon-nucleon pair using the STAR detector at RHIC. Systematic measurements of the dielectron yield as a…

High Energy Physics - Experiment · Physics 2015-09-02 STAR Collaboration , L. Adamczyk , J. K. Adkins , G. Agakishiev , M. M. Aggarwal , Z. Ahammed , I. Alekseev , J. Alford , A. Aparin , D. Arkhipkin , E. C. Aschenauer , G. S. Averichev , A. Banerjee , R. Bellwied , A. Bhasin , A. K. Bhati , P. Bhattarai , J. Bielcik , J. Bielcikova , L. C. Bland , I. G. Bordyuzhin , J. Bouchet , A. V. Brandin , I. Bunzarov , T. P. Burton , J. Butterworth , H. Caines , M. Calderón de la Barca Sánchez , J. M. Campbell , D. Cebra , M. C. Cervantes , I. Chakaberia , P. Chaloupka , Z. Chang , S. Chattopadhyay , J. H. Chen , X. Chen , J. Cheng , M. Cherney , W. Christie , G. Contin , H. J. Crawford , S. Das , L. C. De Silva , R. R. Debbe , T. G. Dedovich , J. Deng , A. A. Derevschikov , B. di Ruzza , L. Didenko , C. Dilks , X. Dong , J. L. Drachenberg , J. E. Draper , C. M. Du , L. E. Dunkelberger , J. C. Dunlop , L. G. Efimov , J. Engelage , G. Eppley , R. Esha , O. Evdokimov , O. Eyser , R. Fatemi , S. Fazio , P. Federic , J. Fedorisin , Z. Feng , P. Filip , Y. Fisyak , C. E. Flores , L. Fulek , C. A. Gagliardi , D. Garand , F. Geurts , A. Gibson , M. Girard , L. Greiner , D. Grosnick , D. S. Gunarathne , Y. Guo , S. Gupta , A. Gupta , W. Guryn , A. Hamad , A. Hamed , R. Haque , J. W. Harris , L. He , S. Heppelmann , S. Heppelmann , A. Hirsch , G. W. Hoffmann , D. J. Hofman , S. Horvat , B. Huang , X. Huang , H. Z. Huang , P. Huck , T. J. Humanic , G. Igo , W. W. Jacobs , H. Jang , K. Jiang , E. G. Judd , S. Kabana , D. Kalinkin , K. Kang , K. Kauder , H. W. Ke , D. Keane , A. Kechechyan , Z. H. Khan , D. P. Kikola , I. Kisel , A. Kisiel , L. Kochenda , D. D. Koetke , T. Kollegger , L. K. Kosarzewski , A. F. Kraishan , P. Kravtsov , K. Krueger , I. Kulakov , L. Kumar , R. A. Kycia , M. A. C. Lamont , J. M. Landgraf , K. D. Landry , J. Lauret , A. Lebedev , R. Lednicky , J. H. Lee , X. Li , C. Li , W. Li , Z. M. Li , Y. Li , X. Li , M. A. Lisa , F. Liu , T. Ljubicic , W. J. Llope , M. Lomnitz , R. S. Longacre , X. Luo , Y. G. Ma , G. L. Ma , L. Ma , R. Ma , N. Magdy , R. Majka , A. Manion , S. Margetis , C. Markert , H. Masui , H. S. Matis , D. McDonald , K. Meehan , N. G. Minaev , S. Mioduszewski , B. Mohanty , M. M. Mondal , D. Morozov , M. K. Mustafa , B. K. Nandi , Md. Nasim , T. K. Nayak , G. Nigmatkulov , L. V. Nogach , S. Y. Noh , J. Novak , S. B. Nurushev , G. Odyniec , A. Ogawa , K. Oh , V. Okorokov , D. Olvitt , B. S. Page , R. Pak , Y. X. Pan , Y. Pandit , Y. Panebratsev , B. Pawlik , H. Pei , C. Perkins , A. Peterson , P. Pile , M. Planinic , J. Pluta , N. Poljak , K. Poniatowska , J. Porter , M. Posik , A. M. Poskanzer , N. K. Pruthi , J. Putschke , H. Qiu , A. Quintero , S. Ramachandran , R. Raniwala , S. Raniwala , R. L. Ray , H. G. Ritter , J. B. Roberts , O. V. Rogachevskiy , J. L. Romero , A. Roy , L. Ruan , J. Rusnak , O. Rusnakova , N. R. Sahoo , P. K. Sahu , I. Sakrejda , S. Salur , J. Sandweiss , A. Sarkar , J. Schambach , R. P. Scharenberg , A. M. Schmah , W. B. Schmidke , N. Schmitz , J. Seger , P. Seyboth , N. Shah , E. Shahaliev , P. V. Shanmuganathan , M. Shao , M. K. Sharma , B. Sharma , W. Q. Shen , S. S. Shi , Q. Y. Shou , E. P. Sichtermann , R. Sikora , M. Simko , M. J. Skoby , D. Smirnov , N. Smirnov , L. Song , P. Sorensen , H. M. Spinka , B. Srivastava , T. D. S. Stanislaus , M. Stepanov , R. Stock , M. Strikhanov , B. Stringfellow , M. Sumbera , B. Summa , X. Sun , Z. Sun , X. M. Sun , Y. Sun , B. Surrow , N. Svirida , M. A. Szelezniak , A. H. Tang , Z. Tang , T. Tarnowsky , A. N. Tawfik , J. H. Thomas , A. R. Timmins , D. Tlusty , M. Tokarev , S. Trentalange , R. E. Tribble , P. Tribedy , S. K. Tripathy , B. A. Trzeciak , O. D. Tsai , T. Ullrich , D. G. Underwood , I. Upsal , G. Van Buren , G. van Nieuwenhuizen , M. Vandenbroucke , R. Varma , A. N. Vasiliev , R. Vertesi , F. Videbæk , Y. P. Viyogi , S. Vokal , S. A. Voloshin , A. Vossen , G. Wang , Y. Wang , F. Wang , Y. Wang , H. Wang , J. S. Wang , J. C. Webb , G. Webb , L. Wen , G. D. Westfall , H. Wieman , S. W. Wissink , R. Witt , Y. F. Wu , Z. G. Xiao , W. Xie , K. Xin , Q. H. Xu , Z. Xu , H. Xu , N. Xu , Y. F. Xu , Q. Yang , Y. Yang , S. Yang , Y. Yang , C. Yang , Z. Ye , P. Yepes , L. Yi , K. Yip , I. -K. Yoo , N. Yu , H. Zbroszczyk , W. Zha , X. P. Zhang , J. Zhang , Y. Zhang , J. Zhang , J. B. Zhang , S. Zhang , Z. Zhang , J. Zhao , C. Zhong , L. Zhou , X. Zhu , Y. Zoulkarneeva , M. Zyzak

Elementary Collisions with HADES

The "High Acceptance DiElectron Spectrometer" (HADES) at GSI, Darmstadt, is investigating the production of e+e- pairs in A+A, p+A and N+N collisions. The latter program allows for the reconstruction of individual sources. This strategy…

Nuclear Experiment · Physics 2019-08-13 I. Froehlich

e+ e- pairs from pi- A reactions

We calculate dilepton production for the reactions $\pi^-$C and $\pi^-$Pb at 1.3 GeV within a semi-classical BUU transport model and compare our results to a previously published calculation. We show that a modified treatment of the…

Nuclear Theory · Physics 2009-10-31 M. Effenberger , E. L. Bratkovskaya , W. Cassing , U. Mosel

Proton distributions in $dp$ dielectron production within Regge theory

The processes of dielectron production in deuteron-proton collisions at intermediate incident deuteron beam energies are analyzed in the spectator model within the one-pion exchange reggeized approach. We focus mainly on the momentum and…

Nuclear Theory · Physics 2017-08-02 A. P. Jerusalimov , G. I. Lykasov

Dilepton production in nucleon-nucleon collisions reexamined

We present a fully relativistic and gauge invariant framework for calculating the cross sections of dilepton production in nucleon-nucleon ($NN$) collisions which is based on the meson-exchange approximation for the $NN$ scattering…

High Energy Physics - Phenomenology · Physics 2009-05-20 R. Shyam , U. Mosel

On a Possible Explanation of the DLS-Puzzle

The enhancement in the dilepton spectrum observed in heavy-ion collisions for invariant electron-positron masses in the range 0.15 GeV/c$^2 < M_{e^+e^-} <$ 0.6 GeV/c$^2$ has recently been traced back to a corresponding enhancement in $pn$…

Nuclear Experiment · Physics 2015-06-18 M. Bashkanov , H. Clement

Directed, elliptic and triangular flow of protons in Au+Au reactions at 1.23 AGeV: A theoretical analysis of the recent HADES data

Recently, the HADES experiment at GSI has provided preliminary data on the directed flow, $v_1$ elliptic flow, $v_2$ and triangular flow, $v_3$ of protons in Au+Au reactions at a beam energy of 1.23 A GeV. Here we present a theoretical…

Nuclear Theory · Physics 2018-08-01 Paula Hillmann , Jan Steinheimer , Marcus Bleicher

Energy dependence of acceptance-corrected dielectron excess mass spectrum at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}} = 19.6$ and 200 GeV

The acceptance-corrected dielectron excess mass spectra, where the known hadronic sources have been subtracted from the inclusive dielectron mass spectra, are reported for the first time at mid-rapidity $|y_{ee}|<1$ in minimum-bias Au+Au…

High Energy Physics - Experiment · Physics 2015-09-25 STAR Collaboration , L. Adamczyk , J. K. Adkins , G. Agakishiev , M. M. Aggarwal , Z. Ahammed , I. Alekseev , J. Alford , A. Aparin , D. Arkhipkin , E. C. Aschenauer , G. S. Averichev , A. Banerjee , R. Bellwied , A. Bhasin , A. K. Bhati , P. Bhattarai , J. Bielcik , J. Bielcikova , L. C. Bland , I. G. Bordyuzhin , J. Bouchet , A. V. Brandin , I. Bunzarov , T. P. Burton , J. Butterworth , H. Caines , M. Calder'on de la Barca S'anchez , J. M. campbell , D. Cebra , M. C. Cervantes , I. Chakaberia , P. Chaloupka , Z. Chang , S. Chattopadhyay , J. H. Chen , X. Chen , J. Cheng , M. Cherney , W. Christie , M. J. M. Codrington , G. Contin , H. J. Crawford , S. Das , L. C. De Silva , R. R. Debbe , T. G. Dedovich , J. Deng , A. A. Derevschikov , B. di Ruzza , L. Didenko , C. Dilks , X. Dong , J. L. Drachenberg , J. E. Draper , C. M. Du , L. E. Dunkelberger , J. C. Dunlop , L. G. Efimov , J. Engelage , G. Eppley , R. Esha , O. Evdokimov , O. Eyser , R. Fatemi , S. Fazio , P. Federic , J. Fedorisin , Feng , P. Filip , Y. Fisyak , C. E. Flores , L. Fulek , C. A. Gagliardi , D. Garand , F. Geurts , A. Gibson , M. Girard , L. Greiner , D. Grosnick , D. S. Gunarathne , Y. Guo , S. Gupta , A. Gupta , W. Guryn , A. Hamad , A. Hamed , R. Haque , J. W. Harris , L. He , S. Heppelmann , A. Hirsch , G. W. Hoffmann , D. J. Hofman , S. Horvat , H. Z. Huang , X. Huang , B. Huang , P. Huck , T. J. Humanic , G. Igo , W. W. Jacobs , H. Jang , K. Jiang , E. G. Judd , S. Kabana , D. Kalinkin , K. Kang , K. Kauder , H. W. Ke , D. Keane , A. Kechechyan , Z. H. Khan , D. P. Kikola , I. Kisel , A. Kisiel , S. R. Klein , D. D. Koetke , T. Kollegger , L. K. Kosarzewski , L. Kotchenda , A. F. Kraishan , P. Kravtsov , K. Krueger , I. Kulakov , L. Kumar , R. A. Kycia , M. A. C. Lamont , J. M. Landgraf , K. D. Landry , J. Lauret , A. Lebedev , R. Lednicky , J. H. Lee , X. Li , X. Li , W. Li , Z. M. Li , Y. Li , C. Li , M. A. Lisa , F. Liu , T. Ljubicic , W. J. Llope , M. Lomnitz , R. S. Longacre , X. Luo , L. Ma , R. Ma , G. L. Ma , Y. G. Ma , N. Magdy , R. Majka , A. Manion , S. Margetis , C. Markert , H. Masui , H. S. Matis , D. McDonald , K. Meehan , N. G. Minaev , S. Mioduszewski , B. Mohanty , M. M. Mondal , D. A. Morozov , M. K. Mustafa , B. K. Nandi , Md. Nasim , T. K. Nayak , G. Nigmatkulov , L. V. Nogach , S. Y. Noh , J. Novak , S. B. Nurushev , G. Odyniec , A. Ogawa , K. Oh , V. Okorokov , D. L. Olvitt , B. S. Page , Y. X. Pan , Y. Pandit , Y. Panebratsev , T. Pawlak , B. Pawlik , H. Pei , C. Perkins , A. Peterson , P. Pile , M. Planinic , J. Pluta , N. Poljak , K. Poniatowska , J. Porter , M. Posik , A. M. Poskanzer , N. K. Pruthi , J. Putschke , H. Qiu , A. Quintero , S. Ramachandran , R. Raniwala , S. Raniwala , R. L. Ray , H. G. Ritter , J. B. Roberts , O. V. Rogachevskiy , J. L. Romero , A. Roy , L. Ruan , J. Rusnak , O. Rusnakova , N. R. Sahoo , P. K. Sahu , I. Sakrejda , S. Salur , A. Sandacz , J. Sandweiss , A. Sarkar , J. Schambach , R. P. Scharenberg , A. M. Schmah , W. B. Schmidke , N. Schmitz , J. Seger , P. Seyboth , N. Shah , E. Shahaliev , P. V. Shanmuganathan , M. Shao , M. K. Sharma , B. Sharma , W. Q. Shen , S. S. Shi , Q. Y. Shou , E. P. Sichtermann , R. Sikora , M. Simko , M. J. Skoby , N. Smirnov , D. Smirnov , D. Solanki , L. Song , P. Sorensen , H. M. Spinka , B. Srivastava , T. D. S. Stanislaus , R. Stock , M. Strikhanov , B. Stringfellow , M. Sumbera , B. J. Summa , Y. Sun , Z. Sun , X. M. Sun , X. Sun , B. Surrow , D. N. Svirida , M. A. Szelezniak , J. Takahashi , A. H. Tang , Z. Tang , T. Tarnowsky , A. N. Tawfik , J. H. Thomas , A. R. Timmins , D. Tlusty , M. Tokarev , S. Trentalange , R. E. Tribble , P. Tribedy , S. K. Tripathy , B. A. Trzeciak , O. D. Tsai , T. Ullrich , D. G. Underwood , I. Upsal , G. Van Buren , G. van Nieuwenhuizen , M. Vandenbroucke , R. Varma , A. N. Vasiliev , R. Vertesi , F. Videbæk , Y. P. Viyogi , S. Vokal , S. A. Voloshin , A. Vossen , Y. Wang , F. Wang , H. Wang , J. S. Wang , G. Wang , Y. Wang , J. C. Webb , G. Webb , L. Wen , G. D. Westfall , H. Wieman , S. W. Wissink , R. Witt , Y. F. Wu , Z. Xiao , W. Xie , K. Xin , Z. Xu , Q. H. Xu , N. Xu , H. Xu , Y. F. Xu , Y. Yang , C. Yang , S. Yang , Q. Yang , Y. Yang , Z. Ye , P. Yepes , L. Yi , K. Yip , I. -K. Yoo , N. Yu , H. Zbroszczyk , W. Zha , J. B. Zhang , X. P. Zhang , S. Zhang , J. Zhang , Z. Zhang , Y. Zhang , J. L. Zhang , F. Zhao , J. Zhao , C. Zhong , L. Zhou , X. Zhu , Y. Zoulkarneeva , M. Zyzak

Dilepton production from SIS to LHC energies

We study e+e- pair production in proton-proton and in nucleus-nucleus collisions from SIS to LHC energies within the parton-hadron-string dynamics (PHSD) approach which incorporates explicit partonic degrees-of-freedom in terms of strongly…

Nuclear Theory · Physics 2015-06-05 E. L. Bratkovskaya , O. Linnyk , V. P. Konchakovski , W. Cassing , V. Ozvenchuk , J. Manninen , C. M. Ko

Enhancement of low-mass dileptons in heavy-ion collisions

Using a relativistic transport model for the expansion stage of S+Au collisions at 200 GeV/nucleon, we show that the recently observed enhancement of low-mass dileptons by the CERES collaboration can be explained by the decrease of vector…

Nuclear Theory · Physics 2010-11-01 G. Q. Li , C. M. Ko , G. E. Brown

Study of elementary reactions with the HADES dielectron spectrometer

Results obtained with the HADES dielectron spectrometer at GSI are discussed, with emphasis on dilepton production in elementary reactions.

Nuclear Experiment · Physics 2010-05-25 B. Ramstein

In-Medium Properties of Hadrons - Observables II

In this review we discuss the observable consequences of in-medium changes of hadronic properties in reactions with elementary probes, and in particular photons, on nuclei. After an outline of the theoretical method used we focus on a…

Nuclear Theory · Physics 2009-11-10 L. Alvarez-Ruso , T. Falter , U. Mosel , P. Muehlich

Central dileption production in proton-proton collisions with rapidity gap and with forward protons

We discuss photon-photon fusion mechanisms of dilepton production in proton-proton collisions with rapidity gap in the main detector and one forward proton in the forward proton detectors. This is relevant for the LHC measurements by…

High Energy Physics - Phenomenology · Physics 2021-07-29 Antoni Szczurek , Barbara Linek , Marta Luszczak

Collective flow and correlations measurements with HADES in Au+Au collisions at 1.23 AGeV

The HADES experiment provides a large acceptance combined with a high mass resolution and therefore makes it possible to study dielectron and hadron production in heavy-ion collisions with unprecedented precision. With the high statistics…

Nuclear Experiment · Physics 2019-01-23 Behruz Kardan

Dilepton Radiation in Heavy-Ion Collisions at Small Transverse Momentum

We study the invariant-mass distributions of dileptons produced in ultrarelativistic heavy-ion collisions at very low pair transverse momenta, $P_T\leq 0.15$ GeV. Specifically, we investigate the interplay of thermal radiation with initial…

Nuclear Theory · Physics 2019-01-30 Mariola Klusek-Gawenda , Ralf Rapp , Wolfgang Schäfer , Antoni Szczurek

Di-electrons from $\eta$ meson Dalitz decay in proton-proton collisions

The reaction $ pp \to pp \eta \to pp \gamma e^+ e^-$ is discussed within a covariant effective meson-nucleon theory. The model is adjusted to data of the subreaction $pp \to pp \eta$. Our focus is on di-electrons from Dalitz decays of…

Nuclear Theory · Physics 2008-11-26 L. P. Kaptari , B. Kampfer

On some properties of Deuteron and Antideuteron production in high energy lead-lead collisions at 158A GeV

We would attempt here to understand some properties of the transverse momentum ($p_T$) and rapidity ($y$) spectra on production of deuteron ($d$) and antideuteron($\overline{d}$) in lead-lead $(Pb+Pb)$ collisions at 158A GeV recently…

Nuclear Theory · Physics 2014-04-11 Goutam Sau , S. Bhattacharyya

Dilepton production by bremsstrahlung of meson fields in nuclear collisions

We study the bremsstrahlung of virtual omega mesons due to the collective deceleration of nuclei at the initial stage of an ultrarelativistic heavy-ion collision. It is shown that electromagnetic decays of these mesons may give an important…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. N. Mishustin , L. M. Satarov , H. Stoecker , W. Greiner

Dilepton radiation by vector mesons and off-shell partons in the hot and dense medium

According to the dynamical quasiparticle model (DQPM) - matched to reproduce lattice QCD results in thermodynamic limit, - the constituents of the strongly interacting quark-gluon plasma (sQGP) are massive and off-shell quasi-particles…

Nuclear Theory · Physics 2015-05-18 O. Linnyk , E. L. Bratkovskaya , W. Cassing

Production of deuterium, tritium, and $^3$He in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN SPS

Production of $d$, $t$, and $^3$He nuclei in central Pb+Pb interactions was studied at five collision energies ($\sqrt{s_{NN}}=$ 6.3, 7.6, 8.8, 12.3, and 17.3 GeV) with the NA49 detector at the CERN SPS. Transverse momentum spectra,…

Nuclear Experiment · Physics 2016-10-19 NA49 Collaboration , T. Anticic , B. Baatar , J. Bartke , H. Beck , L. Betev , H. Białkowska , C. Blume , B. Boimska , J. Book , M. Botje , P. Bunčić , P. Christakoglou , P. Chung , O. Chvala , J. G. Cramer , V. Eckardt , Z. Fodor , P. Foka , V. Friese , M. Gaździcki , K. Grebieszkow , C. Höhne , K. Kadija , A. Karev , V. I. Kolesnikov , M. Kowalski , D. Kresan , A. Laszlo , R. Lacey , M. van Leeuwen , M. Maćkowiak-Pawłowska , M. Makariev , A. I. Malakhov , G. L. Melkumov , M. Mitrovski , St. Mrówczyński , G. Pálla , A. D. Panagiotou , D. Prindle , F. Pühlhofer , R. Renfordt , C. Roland , G. Roland , A. Rustamov , M. Rybczyński , A. Rybicki , A. Sandoval , N. Schmitz , T. Schuster , P. Seyboth , F. Siklér , E. Skrzypczak , M. Slodkowski , G. Stefanek , R. Stock , H. Ströbele , T. Susa , M. Szuba , D. Varga , M. Vassiliou , G. I. Veres , G. Vesztergombi , D. Vranić , Z. Włodarczyk , A. Wojtaszek-Szwarc