A
A. Schmah
Researcher at Technische Universität München
Publications - 9
Citations - 460
A. Schmah is an academic researcher from Technische Universität München. The author has contributed to research in topics: Electron pair & Meson. The author has an hindex of 5, co-authored 9 publications receiving 404 citations.
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Journal ArticleDOI
The high-acceptance dielectron spectrometer HADES
G. Agakichiev,C. Agodi,H. Alvarez-Pol,E. V. Atkin,E. Badura,A. Balanda,A. Bassi,R. Bassini,G. Bellia,G. Bellia,D. Belver,Alexander Belyaev,M. Benovic,D. Bertini,Jaroslav Bielcik,M. Böhmer,C. Boiano,H. Bokemeyer,A. Bartolotti,J. L. Boyard,S. Brambilla,Peter Braun-Munzinger,P. Cabanelas,E. Castro,V. Chepurnov,S. P. Chernenko,T. Christ,R. Coniglione,Luigi Cosentino,M. Dahlinger,H. W. Daues,M. Destefanis,J. S. Díaz,F. Dohrmann,Rugard Dressler,I. Duran,A. Dybczak,Thomas Eberl,Wolfgang Enghardt,L. Fabbietti,O. V. Fateev,C. Fernandez,Paolo Finocchiaro,J. Friese,I. Fröhlich,B. Fuentes,Tetyana Galatyuk,C. Garabatos,J. A. Garzón,B. Genolini,R. Gernhäuser,C. Gilardi,H. Gilg,M. B. Golubeva,D. González-Díaz,Eckart Grosse,Fedor Guber,J. Hehner,K. Heidel,T. Heinz,T. Hennino,S. Hlavac,J. Hoffmann,R. Holzmann,J. Homolka,J. Hutsch,A.P. Ierusalimov,I. Iori,I. Iori,A. Ivashkin,M. Jaskula,J. C. Jourdain,M. Jurkovic,Burkhard Kampfer,M. Kajetanowicz,Kalliopi Kanaki,Tatiana Karavicheva,A. Kastenmüller,L. Kidon,Paul Kienle,D. Kirschner,I. Koenig,W. Koenig,H. J. Körner,B. W. Kolb,U. Kopf,K. Korcyl,R. Kotte,A. Kozuch,F. Krizek,R. Krücken,Wolfgang Kuhn,A. Kugler,R. Kulessa,A. B. Kurepin,T. Kurtukian-Nieto,S. Lang,J. S. Lange,K. Lapidus,J. Lehnert,U. Leinberger,C. Lichtblau,E. Lins,C. Lippmann,M. Lorenz,D. Magestro,L. Maier,P. Maier-Komor,C. Maiolino,A. Malarz,T. Marek,J. Markert,Volker Metag,B. Michalska,J. Michel,E. Migneco,E. Migneco,D. Mishra,E. Morinière,Jehad Mousa,M. Münch,C. Müntz,L. Naumann,A. Nekhaev,W. Niebur,Jan Novotny,R. W. Novotny,W. Ott,J. Otwinowski,Y. C. Pachmayer,Marek Palka,Y. Parpottas,V. Pechenov,O. Pechenova,T. Perez Cavalcanti,M. Petri,Paolo Piattelli,J. Pietraszko,R. Pleskac,M. Ploskon,V. Pospíšil,J. Pouthas,W. Prokopowicz,Witold Przygoda,B. Ramstein,Andrey Reshetin,James Ritman,G. Roche,G. Rodriguez-Prieto,K. Rosenkranz,P. Rosier,M. Roy-Stephan,A. Rustamov,J. Sabin-Fernandez,A. Sadovsky,B. Sailer,Piotr Salabura,C. Salz,M. Sánchez,Piera Sapienza,D. Schäfer,Rainer Martin Schicker,A. Schmah,H. Schön,W. Schön,C. Schroeder,S. Schroeder,E. Schwab,Peter Senger,K.A. Shileev,R.S. Simon,Maximilian W. A. Skoda,V. T. Smolyankin,L. Smykov,Manfred Sobiella,Yu. G. Sobolev,S. Spataro,B. Spruck,H. Stelzer,H. Ströbele,Joachim Stroth,C. Sturm,M. Sudol,M. Suk,M. Szczybura,A. Taranenko,A. Tarantola,K. Teilab,V. Tiflov,A. Tikhonov,P. Tlusty,A. Toia,M. Traxler,R. Trebacz,A. Yu. Troyan,H. Tsertos,I. Turzo,A. Ulrich,D. Vassiliev,A. Vazquez,Y. Volkov,V. Wagner,C. Wallner,W. Walus,Y. Wang,M. Weber,Jochen Wieser,S. Winkler,M. Wisniowski,T. Wojcik,J. Wüstenfeld,S. Yurevich,Yu.V. Zanevsky,Karl Zeitelhack,A. Zentek,P. Zhou,D. Zovinec,P. Zumbruch +217 more
TL;DR: HADES as discussed by the authors is a versatile magnetic spectrometer aimed at studying dielectron production in pion, proton and heavy-ion-induced collisions, which includes a ring imaging gas Cherenkov detector for electron-hadron discrimination, a tracking system consisting of a set of 6 superconducting coils producing a toroidal field and drift chambers, and a multiplicity and electron trigger array for additional electron hadron discrimination.
Journal ArticleDOI
Origin of the low-mass electron pair excess in light nucleus-nucleus collisions
G. Agakichiev,A. Balanda,D. Belver,Alexander Belyaev,A. Blanco,M. Böhmer,J. L. Boyard,Peter Braun-Munzinger,P. Cabanelas,E. Castro,S. P. Chernenko,T. Christ,M. Destefanis,J. S. Díaz,F. Dohrmann,A. Dybczak,Laura Fabbietti,O. V. Fateev,Paolo Finocchiaro,P. Fonte,J. Friese,I. Fröhlich,Tetyana Galatyuk,J. A. Garzón,R. Gernhäuser,A. Gil,C. Gilardi,K. Göbel,M. B. Golubeva,D. González-Díaz,Fedor Guber,T. Hennino,R. Holzmann,I. Iori,A. Ivashkin,M. Jurkovic,B. Kämpfer,Tatiana Karavicheva,D. Kirschner,I. Koenig,W. Koenig,B. W. Kolb,R. Kotte,Filip Krizek,R. Krücken,Wolfgang Kuhn,A. Kugler,A. B. Kurepin,S. Lang,J. S. Lange,K. Lapidus,T. Liu,L. Lopes,M. Lorenz,L. Maier,A. Mangiarotti,J. Markert,Volker Metag,B. Michalska,J. Michel,E. Morinière,Jehad Mousa,C. Müntz,L. Naumann,J. Otwinowski,Y. C. Pachmayer,Marek Palka,Y. Parpottas,V. Pechenov,O. Pechenova,J. Pietraszko,Witold Przygoda,B. Ramstein,Andrey Reshetin,A. Rustamov,A. Sadovsky,Piotr Salabura,A. Schmah,E. Schwab,Yu. G. Sobolev,S. Spataro,B. Spruck,H. Ströbele,Joachim Stroth,C. Sturm,M. Sudol,A. Tarantola,K. Teilab,P. Tlusty,M. Traxler,R. Trebacz,H. Tsertos,V. Wagner,M. Weber,M. Wisniowski,T. Wojcik,J. Wüstenfeld,S. Yurevich,Yu.V. Zanevsky,P. Zhou +99 more
TL;DR: In this article, the electron pairs were reconstructed for n + p reactions by detecting the proton spectator from the deuteron breakup with the HADES spectrometer, and the yield of electron pairs with invariant mass M e + e − > 0.15 GeV / c 2 was found to be an order of magnitude larger in N + P reactions as compared to N + p.
Journal ArticleDOI
Study of the quasi-free np → npπ + π − reaction with a deuterium beam at 1.25 GeV/nucleon
G. Agakishiev,A. Balanda,D. Belver,Alexander Belyaev,A. Blanco,M. Böhmer,J. L. Boyard,Peter Braun-Munzinger,P. Cabanelas,E. Castro,S. P. Chernenko,T. Christ,M. Destefanis,J. S. Díaz,F. Dohrmann,A. Dybczak,Laura Fabbietti,O. V. Fateev,Paolo Finocchiaro,P. Fonte,J. Friese,I. Fröhlich,Tetyana Galatyuk,J. A. Garzón,Roman Gernhäuser,A. Gil,C. Gilardi,Kathrin Göbel,M. B. Golubeva,D. González-Díaz,Fedor Guber,M. Gumberidze,T. Hennino,R. Holzmann,A.P. Ierusalimov,I. Iori,A. Ivashkin,M. Jurkovic,B. Kämpfer,Tatiana Karavicheva,D. Kirschner,I. Koenig,W. Koenig,B. W. Kolb,R. Kotte,Filip Krizek,R. Krücken,Wolfgang Kuhn,A. Kugler,A. B. Kurepin,A. K. Kurilkin,P. K. Kurilkin,V. P. Ladygin,S. Lang,J. S. Lange,Kirill Lapidus,T. Liu,L. Lopes,M. Lorenz,L. Maier,A. Mangiarotti,J. Markert,Volker Metag,B. Michalska,J. Michel,E. Morinière,Jehad Mousa,C. Müntz,L. Naumann,J. Otwinowski,Y. C. Pachmayer,Marek Palka,Y. Parpottas,V. Pechenov,O. Pechenova,J. Pietraszko,Witold Przygoda,B. Ramstein,Andrey Reshetin,A. Rustamov,A. Sadovsky,Piotr Salabura,A. Schmah,E. Schwab,Yu. G. Sobolev,S. Spataro,B. Spruck,H. Ströbele,Joachim Stroth,C. Sturm,A. Tarantola,K. Teilab,P. Tlusty,M. Traxler,R. Trebacz,H. Tsertos,V. Wagner,T. A. Vasiliev,Michael Weber,M. Wisniowski,T. Wojcik,J. Wüstenfeld,S. Yurevich,Yu.V. Zanevsky,P. Zhou +104 more
TL;DR: In this article, the authors compared the invariant mass and angular distributions for the np→npπ+π- reaction with different models and confirmed the dominance of the t-channel with δδ contribution.
Journal ArticleDOI
Measurement of charged pions in 12C + 12C collisions at 1 A GeV and 2 A GeV with HADES
G. Agakishiev,C. Agodi,A. Balanda,G. Bellia,G. Bellia,D. Belver,Alexander Belyaev,Jaroslav Bielcik,A. Blanco,A. Bortolotti,J. L. Boyard,Peter Braun-Munzinger,P. Cabanelas,S. P. Chernenko,T. Christ,R. Coniglione,M. Destefanis,J. S. Díaz,F. Dohrmann,I. Duran,A. Dybczak,T. Eberl,Laura Fabbietti,O. V. Fateev,R. Ferreira-Marques,Paolo Finocchiaro,P. Fonte,J. Friese,I. Fröhlich,T. Galatyuk,J. A. Garzón,Roman Gernhäuser,A. Gil,C. Gilardi,M. B. Golubeva,D. González-Díaz,E. Grosse,Fedor Guber,M. Heilmann,T. Heinz,T. Hennino,R. Holzmann,A.P. Ierusalimov,I. Iori,I. Iori,A. Ivashkin,M. Jurkovic,B. Kämpfer,Kalliopi Kanaki,Tatiana Karavicheva,D. Kirschner,I. Koenig,W. Koenig,B. W. Kolb,R. Kotte,A. Kozuch,A. Krása,F. Křížek,R. Krücken,Wolfgang Kuhn,A. Kugler,A. B. Kurepin,J. Lamas-Valverde,S. Lang,J. S. Lange,K. Lapidus,L. Lopes,M. Lorenz,L. Maier,C. Maiolino,A. Mangiarotti,J. Marín,J. Markert,Volker Metag,B. Michalska,J. Michel,E. Morinière,Jehad Mousa,M. Münch,C. Müntz,L. Naumann,R. W. Novotny,J. Otwinowski,Y. C. Pachmayer,Marek Palka,Y. Parpottas,V. Pechenov,O. Pechenova,T. Perez Cavalcanti,Paolo Piattelli,J. Pietraszko,V. Pospíšil,Witold Przygoda,B. Ramstein,Andrey Reshetin,M. Roy-Stephan,A. Rustamov,A. Sadovsky,B. Sailer,Piotr Salabura,Piera Sapienza,A. Schmah,C. Schroeder,E. Schwab,R.S. Simon,Yu. G. Sobolev,S. Spataro,B. Spruck,H. Ströbele,Joachim Stroth,C. Sturm,M. Sudol,A. Tarantola,K. Teilab,P. Tlustý,M. Traxler,R. Trebacz,H. Tsertos,V. Wagner,M. Weber,M. Wisniowski,T. Wojcik,J. Wüstenfeld,S. Yurevich,Yu.V. Zanevsky,P. Zhou,P. Zumbruch +126 more
TL;DR: In this article, the authors present the results of a study of charged-pion production in 12C + 12C collisions at incident beam energies of 1A GeV and 2a GeV using the HADES spectrometer at GSI.
Journal ArticleDOI
The HADES Collaboration
A. Balanda,D. Belver,Alexander Belyaev,A. Blanco,M. Böhmer,J. L. Boyard,Peter Braun-Munzinger,P. Cabanelas,E. Castro,S. P. Chernenko,J. S. Díaz,A. Dybczak,E. Epple,Laura Fabbietti,O. V. Fateev,Paolo Finocchiaro,P. Fonte,J. Friese,I. Fröhlich,Tetyana Galatyuk,J. A. Garzón,Roman Gernhäuser,A. Gil,M. B. Golubeva,D. González-Díaz,Fedor Guber,T. Hennino,R. Holzmann,P. Huck,A.P. Ierusalimov,I. Iori,I. Iori,A. Ivashkin,M. Jurkovic,Burkhard Kampfer,Tatiana Karavicheva,I. Koenig,W. Koenig,B. W. Kolb,A. Kopp,R. Kotte,A. Kozuch,A. Krása,Filip Krizek,R. Krücken,Wolfgang Kuhn,A. Kugler,A. B. Kurepin,P. K. Kählitz,J. Lamas-Valverde,S. Lang,J. S. Lange,K. Lapidus,T. Liu,L. Lopes,M. Lorenz,L. Maier,A. Mangiarotti,J. Markert,V. Metag,B. Michalska,J. Michel,E. Morinière,Jehad Mousa,C. Müntz,L. Naumann,Y. C. Pachmayer,Marek Palka,Y. Parpottas,V. Pechenov,J. Pietraszko,Witold Przygoda,B. Ramstein,Andrey Reshetin,J. Roskoss,A. Rustamov,A. Sadovsky,Piotr Salabura,A. Schmah,J. Siebenson,R.S. Simon,Yu. G. Sobolev,B. Spruck,H. Ströbele,Joachim Stroth,C. Sturm,M. Sudol,A. Tarantola,K. Teilab,P. Tlusty,M. Traxler,R. Trebacz,H. Tsertos,I. Veretenkin,V. Wagner,M. Weber,M. Wisniowski,J. Wüstenfeld,S. Yurevich,Yu.V. Zanevsky +99 more
TL;DR: In this article, the authors proposed a method to solve the problem of how to find the minimum number of nuclei for a given set of experiments in order to obtain the maximum number of nodes.