M
M. Amarian
Researcher at Istituto Superiore di Sanità
Publications - 10
Citations - 746
M. Amarian is an academic researcher from Istituto Superiore di Sanità. The author has contributed to research in topics: Deep inelastic scattering & Scattering. The author has an hindex of 10, co-authored 10 publications receiving 703 citations.
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Journal ArticleDOI
Measurement of the Beam-Spin Azimuthal Asymmetry Associated with Deeply-Virtual Compton Scattering
A. Airapetian,N. Akopov,Z. Akopov,M. Amarian,E. C. Aschenauer,H. Avakian,R.O. Avakian,A. Avetissian,E. Avetissian,P. Bailey,B. Bains,V. Baturin,C. Baumgarten,M. Beckmann,S. Belostotski,S. Bernreuther,Nicola Bianchi,H. Böttcher,A. Borissov,Othmane Bouhali,M. Bouwhuis,Jeffrey Brack,S. Brauksiepe,W. Brückner,A. Brüll,I. Brunn,H. J. Bulten,G. P. Capitani,P. Chumney,Evaristo Cisbani,G. Ciullo,G.R. Court,P. F. Dalpiaz,R. De Leo,L. De Nardo,E. De Sanctis,D. De Schepper,E. Devitsin,P.K.A. de Witt Huberts,P. Di Nezza,M. Düren,M. Ehrenfried,G. Elbakian,Frank Ellinghaus,J. Ely,R. Fabbri,Alessandra Fantoni,A. Fechtchenko,L. Felawka,B. W. Filippone,H. Fischer,B. D. Fox,J. Franz,Salvatore Frullani,Y. Gärber,Franco Garibaldi,Erika Garutti,G. Gavrilov,V. Gharibyan,A. Golendukhin,G. Graw,O. Grebeniouk,P.W. Green,P.W. Green,L. G. Greeniaus,L. G. Greeniaus,A. Gute,W. Haeberli,K. Hafidi,M. Hartig,D. Hasch,D. Heesbeen,F.H. Heinsius,M. Henoch,Ralf Hertenberger,W.H.A. Hesselink,G. Hofman,Y. Holler,R. J. Holt,B. Hommez,G. Iarygin,Andrey V. Izotov,H. E. Jackson,A. Jgoun,Peter Jung,Ralf Kaiser,J. Kanesaka,E. R. Kinney,A. Kisselev,A. Kisselev,P. Kitching,Hiroaki Kobayashi,N. Koch,K. Königsmann,H. Kolster,V. A. Korotkov,E. Kotik,V. A. Kozlov,B. Krauss,V. G. Krivokhijine,G. S. Kyle,L. Lagamba,A. Laziev,P. Lenisa,P. Liebing,T. Lindemann,Wolfgang Lorenzon,Axel Maas,Naomi C R Makins,H. Marukyan,F. Masoli,M. McAndrew,K. McIlhany,K. McIlhany,F. Meissner,F. Meissner,F. Menden,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,Ross Milner,Valeria Muccifora,R. Mussa,A. Nagaitsev,Eugenio Nappi,Y. Naryshkin,A. Nass,K. Negodaeva,W.-D. Nowak,K. Oganessyan,Thomas O'Neill,B. R. Owen,S. F. Pate,S. Potashov,D. H. Potterveld,Martin Raithel,G. Rakness,V. Rappoport,R. P. Redwine,D. Reggiani,A. R. Reolon,Klaus Rith,D. Robinson,A. Rostomyan,M. Ruh,Dirk Ryckbosch,Yasuhiro Sakemi,I. Sanjiev,I. Sanjiev,F. Sato,I.A. Savin,C. Scarlett,Andreas Schäfer,Christian Schill,F. Schmidt,G. Schnell,K. P. Schüler,A. Schwind,J. Seibert,B. Seitz,T. A. Shibata,V. Shutov,M. C. Simani,A. Simon,K. Sinram,E. Steffens,J. J. M. Steijger,J. Stewart,J. Stewart,J. Stewart,U. Stosslein,K. Suetsugu,S. Taroian,Adel Terkulov,S. Tessarin,E. Thomas,B. Tipton,Michael Tytgat,G. M. Urciuoli,J. F. J. van den Brand,G. van der Steenhoven,R. Van de Vyver,J. van Hunen,Michel Vetterli,Michel Vetterli,V. Vikhrov,Manuella Vincter,J. Visser,C. Weiskopf,J. Wendland,J. Wendland,J. Wilbert,T. Wise,S. Yen,S. Yoneyama,H. Zohrabian +196 more
TL;DR: The beam-spin asymmetry in hard electroproduction of photons has been measured in this paper, where the data have been accumulated by the HERMES experiment at DESY using the HERA 27.6 GeV longitudinally polarized positron beam and an unpolarized hydrogen gas target.
Journal ArticleDOI
Flavor decomposition of the polarized quark distributions in the nucleon from inclusive and semi-inclusive deep-inelastic scattering
K. Ackerstaff,A. Airapetian,N. Akopov,Igor Akushevich,M. Amarian,E.C. Aschenauer,H. Avakian,R.O. Avakian,A. Avetissian,B. Bains,S. Barrow,C. Baumgarten,M. Beckmann,S. Belostotski,J. E. Belz,J. E. Belz,Th. Benisch,S. Bernreuther,Nicola Bianchi,Sean Blanchard,J. Blouw,H. Böttcher,A. Borissov,Jeffrey Brack,B. Bray,S. Brauksiepe,B. Braun,B. Braun,S. Brons,W. Brückner,A. Brull,E. E. W. Bruins,H. J. Bulten,H. J. Bulten,R. V. Cadman,G. P. Capitani,P. Carter,P. Chumney,Evaristo Cisbani,G.R. Court,P. F. Dalpiaz,R. De Leo,P. P. J. Delheij,E. De Sanctis,D. De Schepper,D. De Schepper,E. Devitsin,P.K.A. de Witt Huberts,P. Di Nezza,M. Düren,A. Dvoredsky,J. Ely,G. Elbakian,Joseph Emerson,Joseph Emerson,Alessandra Fantoni,A. Fechtchenko,M. Ferstl,D. Fick,K. Fiedler,B. W. Filippone,H. Fischer,H. T. Fortune,B. D. Fox,S. Frabetti,J. Franz,S. Frullani,M.-A. Funk,N.D. Gagunashvili,P. Galumian,Haiyan Gao,Haiyan Gao,Haiyan Gao,Y. Gärber,Franco Garibaldi,G. Gavrilov,P. Geiger,V. Gharibyan,A. Golendukhin,G. Graw,O. Grebeniouk,P.W. Green,P.W. Green,L. G. Greeniaus,L. G. Greeniaus,C. Grosshauser,M. Guidal,A. Gute,V. Gyurjyan,J. P. Haas,W. Haeberli,J.-O. Hansen,D. Hasch,O. Häusser,O. Häusser,Robert Henderson,F.H. Heinsius,Th. Henkes,M. Henoch,Ralf Hertenberger,Y. Holler,R. J. Holt,W. Hoprich,H. Ihssen,M. Iodice,A. Izotov,H. E. Jackson,A. Jgoun,C. E. Jones,Ralf Kaiser,Ralf Kaiser,M. Kestel,E. R. Kinney,M. Kirsch,A. Kisselev,P. Kitching,Hiroaki Kobayashi,N. Koch,K. Königsmann,M. Kolstein,H. Kolster,V. Korotkov,Wolfgang Korsch,Wolfgang Korsch,V. A. Kozlov,L. H. Kramer,L. H. Kramer,B. Krause,V. G. Krivokhijine,M. Kückes,F. Kümmell,M. Kurisuno,G. S. Kyle,W. Lachnit,Wolfgang Lorenzon,Wolfgang Lorenzon,A. Lung,Naomi C R Makins,Naomi C R Makins,F. K. Martens,J. W. Martin,H. Marukyan,F. Masoli,A.O. Mateos,M. Maul,M. McAndrew,K. McIlhany,K. McIlhany,R. D. McKeown,F. Meissner,F. Menden,F. Menden,D. Mercer,A. Metz,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,M. A. Miller,Ross Milner,Valeri Valentinovitch Mitsyn,R. Mozzetti,Valeria Muccifora,A. Nagaitsev,E. Nappi,Y. Naryshkin,Alan M. Nathan,F. Neunreither,J. M. Niczyporuk,J. M. Niczyporuk,W.-D. Nowak,M. Nupieri,P. Oelwein,H. Ogami,Thomas O'Neill,R. Openshaw,B. R. Owen,Jinsong Ouyang,V. Papavassiliou,S. F. Pate,S. F. Pate,Michael Pitt,H. R. Poolman,S. Potashov,D. H. Potterveld,G. Rakness,A. Reali,R. P. Redwine,A. R. Reolon,R. A. Ristinen,Klaus Rith,G. Röper,P. Rossi,S. Rudnitsky,S. Rudnitsky,M. Ruh,Dirk Ryckbosch,Yasuhiro Sakemi,I.A. Savin,C. Scarlett,Andreas Schäfer,F. Schmidt,H. Schmitt,G. Schnell,K. P. Schüler,A. Schwind,J. Seibert,T. A. Shibata,K. Shibatani,T. Shin,V. Shutov,C. Simani,A. Simon,A. Simon,K. Sinram,P. Slavich,W.R. Smythe,J. Sowinski,M. Spengos,E. Steffens,J. Stenger,J. Stewart,F. Stock,F. Stock,U. Stoesslein,M. Sutter,H. Tallini,S. Taroian,Adel Terkulov,D.M. Thiessen,D.M. Thiessen,B. Tipton,E. Thomas,A. Trudel,Michael Tytgat,G. M. Urciuoli,J. van Hunen,R. Van de Vyver,J. F. J. van den Brand,G. van der Steenhoven,Michel Vetterli,Michel Vetterli,V. Vikhrov,Manuella Vincter,J. Visser,E. Volk,W. Wander,W. Wander,T. P. Welch,J. Wendland,J. Wendland,S. E. Williamson,T. Wise,K. Woller,S. Yoneyama,K. Zapfe,H. Zohrabian,R. Zurmühle +257 more
TL;DR: In this article, the first moments of the polarized quark distributions were compared to predictions based on SU(3)f flavor symmetry and to a prediction from lattice QCD.
Journal ArticleDOI
Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering
A. Airapetian,N. Akopov,Z. Akopov,M. Amarian,E. C. Aschenauer,H. Avakian,R.O. Avakian,A. Avetissian,E. Avetissian,P. Bailey,B. Bains,V. Baturin,C. Baumgarten,M. Beckmann,S. Belostotski,S. Bernreuther,Nicola Bianchi,H. Böttcher,A. Borissov,Othmane Bouhali,M. Bouwhuis,Jeffrey Brack,S. Brauksiepe,W. Brückner,A. Brüll,I. Brunn,H. J. Bulten,G. P. Capitani,P. Chumney,Evaristo Cisbani,G. Ciullo,G.R. Court,P. F. Dalpiaz,R. De Leo,L. De Nardo,E. De Sanctis,D. De Schepper,E. Devitsin,P.K.A. de Witt Huberts,P. Di Nezza,V. Djordjadze,M. Düren,M. Ehrenfried,G. Elbakian,Frank Ellinghaus,J. Ely,Alessandra Fantoni,A. Fechtchenko,L. Felawka,B. W. Filippone,H. Fischer,B. D. Fox,J. Franz,Salvatore Frullani,Y. Gärber,Franco Garibaldi,Erika Garutti,G. Gavrilov,V. Gharibyan,A. Golendukhin,G. Graw,O. Grebeniouk,P.W. Green,P.W. Green,L. G. Greeniaus,L. G. Greeniaus,A. Gute,W. Haeberli,K. Hafidi,M. Hartig,D. Hasch,D. Heesbeen,F.H. Heinsius,M. Henoch,Ralf Hertenberger,W.H.A. Hesselink,G. Hofman,Y. Holler,R. J. Holt,R. J. Holt,B. Hommez,G. Iarygin,Andrey V. Izotov,H. E. Jackson,A. Jgoun,Peter Jung,Ralf Kaiser,J. Kanesaka,E. R. Kinney,A. Kisselev,A. Kisselev,P. Kitching,Hiroaki Kobayashi,N. Koch,K. Königsmann,H. Kolster,V. A. Korotkov,E. Kotik,V. A. Kozlov,B. Krauss,V. G. Krivokhijine,G. S. Kyle,L. Lagamba,A. Laziev,P. Lenisa,P. Liebing,T. Lindemann,Wolfgang Lorenzon,Axel Maas,Naomi C R Makins,H. Marukyan,F. Masoli,M. McAndrew,K. McIlhany,K. McIlhany,F. Meissner,F. Menden,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,Ross Milner,Valeria Muccifora,R. Mussa,A. Nagaitsev,Eugenio Nappi,Y. Naryshkin,A. Nass,K. Negodaeva,W.-D. Nowak,K. Oganessyan,Thomas O'Neill,B. R. Owen,S. F. Pate,S. Potashov,D. H. Potterveld,Martin Raithel,G. Rakness,V. Rappoport,R. P. Redwine,D. Reggiani,A. R. Reolon,Klaus Rith,D. Robinson,A. Rostomyan,M. Ruh,Dirk Ryckbosch,Yasuhiro Sakemi,I. Sanjiev,I. Sanjiev,F. Sato,I.A. Savin,C. Scarlett,Andreas Schäfer,Christian Schill,F. Schmidt,G. Schnell,K. P. Schüler,A. Schwind,J. Seibert,B. Seitz,T. A. Shibata,V. Shutov,M. C. Simani,A. Simon,K. Sinram,E. Steffens,J. J. M. Steijger,J. Stewart,U. Stosslein,K. Suetsugu,S. Taroian,Adel Terkulov,O.V. Teryaev,O.V. Teryaev,S. Tessarin,E. Thomas,B. Tipton,Michael Tytgat,G. M. Urciuoli,J. F. J. van den Brand,G. van der Steenhoven,R. Van de Vyver,J. van Hunen,Michel Vetterli,Michel Vetterli,V. Vikhrov,Manuella Vincter,J. Visser,C. Weiskopf,J. Wendland,J. Wendland,J. Wilbert,T. Wise,S. Yen,S. Yoneyama,H. Zohrabian +196 more
TL;DR: In this paper, a single-spin asymmetry in the azimuthal distribution of neutral pions relative to the lepton scattering plane has been measured for the first time in deepinelastic scattering of positrons off longitudinally polarized protons.
Journal ArticleDOI
Evidence for quark-hadron duality in the proton spin asymmetry A(1)
A. Airapetian,N. Akopov,Z. Akopov,M. Amarian,V. V. Ammosov,E. C. Aschenauer,H. Avakian,R.O. Avakian,A. Avetissian,E. Avetissian,P. Bailey,V. Baturin,C. Baumgarten,M. Beckmann,S. Belostotski,S. Bernreuther,Nicola Bianchi,H. P. Blok,H. Böttcher,A. Borissov,Othmane Bouhali,M. Bouwhuis,Jeffrey Brack,S. Brauksiepe,A. Brüll,I. Brunn,H. J. Bulten,G. P. Capitani,Evaristo Cisbani,G. Ciullo,G.R. Court,P. F. Dalpiaz,R. De Leo,L. De Nardo,E. De Sanctis,E. Devitsin,P.K.A. de Witt Huberts,P. Di Nezza,Michael Düren,M. Ehrenfried,G. Elbakian,Frank Ellinghaus,U. Elschenbroich,U. Elschenbroich,J. Ely,R. Fabbri,Alessandra Fantoni,A. Fechtchenko,L. Felawka,B. W. Filippone,H. Fischer,B. D. Fox,J. Franz,Salvatore Frullani,Y. Gärber,V. A. Gapienko,Franco Garibaldi,Erika Garutti,G. Gavrilov,V. Gharibyan,G. Graw,O. Grebeniouk,P.W. Green,P.W. Green,L. G. Greeniaus,L. G. Greeniaus,A. Gute,W. Haeberli,K. Hafidi,M. Hartig,D. Hasch,D. Heesbeen,F.H. Heinsius,M. Henoch,Ralf Hertenberger,W.H.A. Hesselink,G. Hofman,Y. Holler,R. J. Holt,B. Hommez,G. Iarygin,Andrey V. Izotov,H. E. Jackson,A. Jgoun,Peter Jung,Ralf Kaiser,E. R. Kinney,A. Kisselev,P. Kitching,K. Königsmann,H. Kolster,M. Kopytin,V. A. Korotkov,E. Kotik,V. A. Kozlov,B. Krauss,V. G. Krivokhijine,G. S. Kyle,L. Lagamba,A. Laziev,P. Lenisa,P. Liebing,T. Lindemann,Wolfgang Lorenzon,Axel Maas,Naomi C R Makins,H. Marukyan,F. Masoli,F. Menden,V. Mexner,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,Valeria Muccifora,A. Nagaitsev,Eugenio Nappi,Y. Naryshkin,A. Nass,K. Negodaeva,W.-D. Nowak,K. Oganessyan,G. Orlandi,S. Podiatchev,S. Potashov,D. H. Potterveld,Martin Raithel,V. Rappoport,D. Reggiani,P. E. Reimer,A. Reischl,A. R. Reolon,Klaus Rith,A. Rostomyan,Dirk Ryckbosch,Yasuhiro Sakemi,I. Sanjiev,I. Sanjiev,F. Sato,I.A. Savin,C. Scarlett,Andreas Schäfer,Christian Schill,F. Schmidt,G. Schnell,K. P. Schüler,A. Schwind,J. Seibert,B. Seitz,R. Shanidze,T. A. Shibata,V. Shutov,M. C. Simani,K. Sinram,M. Stancari,E. Steffens,J. J. M. Steijger,J. Stewart,U. Stosslein,K. Suetsugu,S. Taroian,Adel Terkulov,S. Tessarin,E. Thomas,B. Tipton,Michael Tytgat,G. M. Urciuoli,J. F. J. van den Brand,G. van der Steenhoven,R. Van de Vyver,Michel Vetterli,Michel Vetterli,V. Vikhrov,Manuella Vincter,J. Visser,J. Volmer,C. Weiskopf,J. Wendland,J. Wendland,J. Wilbert,T. Wise,S. Yen,S. Yoneyama,B. Zihlmann,H. Zohrabian +184 more
TL;DR: The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable x.
Journal ArticleDOI
Q 2 dependence of nuclear transparency for exclusive rho 0 production
A. Airapetian,N. Akopov,Z. Akopov,M. Amarian,V. V. Ammosov,A. Andrus,E. C. Aschenauer,W. Augustyniak,R.O. Avakian,A. Avetissian,E. Avetissian,P. Bailey,V. Baturin,C. Baumgarten,M. Beckmann,S. Belostotski,S. Bernreuther,Nicola Bianchi,H. P. Blok,H. Böttcher,A. Borissov,M. Bouwhuis,Jeffrey Brack,A. Brüll,I. Brunn,G. P. Capitani,H. C. Chiang,G. Ciullo,M. Contalbrigo,G.R. Court,P. F. Dalpiaz,R. De Leo,L. De Nardo,E. De Sanctis,E. Devitsin,P. Di Nezza,Michael Düren,M. Ehrenfried,A. Elalaoui-Moulay,G. Elbakian,Frank Ellinghaus,U. Elschenbroich,J. Ely,R. Fabbri,Alessandra Fantoni,A. Fechtchenko,L. Felawka,B. D. Fox,J. Franz,Salvatore Frullani,Y. Gärber,G. Gapienko,V. Gapienko,Franco Garibaldi,Erika Garutti,D. Gaskell,G. Gavrilov,V. Gharibyan,G. Graw,O. Grebeniouk,L. G. Greeniaus,L. G. Greeniaus,W. Haeberli,K. Hafidi,M. Hartig,D. Hasch,D. Heesbeen,M. Henoch,Ralf Hertenberger,W.H.A. Hesselink,A. Hillenbrand,Y. Holler,B. Hommez,G. Iarygin,Andrey V. Izotov,H. E. Jackson,A. Jgoun,Ralf Kaiser,E. R. Kinney,A. Kisselev,K. Königsmann,H. Kolster,M. Kopytin,V. A. Korotkov,V. A. Kozlov,B. Krauss,V. G. Krivokhijine,L. Lagamba,L. Lapikás,A. Laziev,P. Lenisa,P. Liebing,T. Lindemann,Wolfgang Lorenzon,Naomi C R Makins,H. Marukyan,F. Masoli,F. Menden,V. Mexner,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,Y. Miyachi,Valeria Muccifora,A. Nagaitsev,Eugenio Nappi,Y. Naryshkin,A. Nass,K. Negodaeva,W.-D. Nowak,K. Oganessyan,H. Ohsuga,G. Orlandi,S. Podiatchev,S. Potashov,D. H. Potterveld,Martin Raithel,D. Reggiani,P. E. Reimer,A. Reischl,A. R. Reolon,Klaus Rith,G. Rosner,A. Rostomyan,Dirk Ryckbosch,I. Sanjiev,I. Sanjiev,I.A. Savin,C. Scarlett,Andreas Schäfer,Christian Schill,G. Schnell,K. P. Schüler,A. Schwind,J. Seibert,B. Seitz,R. Shanidze,T. A. Shibata,V. Shutov,M. C. Simani,K. Sinram,M. Stancari,M. Statera,E. Steffens,J. J. M. Steijger,J. Stewart,U. Stosslein,Hidekazu Tanaka,S. Taroian,B. Tchuiko,A. Terkulov,S. Tessarin,E. Thomas,A. Tkabladze,A. Trzcinski,Michael Tytgat,G. M. Urciuoli,P. B. van der Nat,G. van der Steenhoven,R. Van de Vyver,Michel Vetterli,Michel Vetterli,V. Vikhrov,Manuella Vincter,J. Visser,M. Vogt,J. Volmer,C. Weiskopf,J. Wendland,J. Wendland,J. Wilbert,T. Wise,S. Yen,S. Yoneyama,B. Zihlmann,H. Zohrabian,P. Zupranski +177 more
TL;DR: In this article, the authors studied coherent and incoherent electroproduction of the rho(0) meson from H-1 and N-14 targets at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual photon, and squared four-momentum of virtual photon (-Q(2)).