M
M. Amarian
Researcher at Yerevan Physics Institute
Publications - 42
Citations - 3172
M. Amarian is an academic researcher from Yerevan Physics Institute. The author has contributed to research in topics: HERA & HERMES experiment. The author has an hindex of 26, co-authored 38 publications receiving 2900 citations.
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Journal ArticleDOI
Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target.
A. Airapetian,N. Akopov,Z. Akopov,M. Amarian,A. Andrus,E. C. Aschenauer,W. Augustyniak,R.O. Avakian,A. Avetissian,E. Avetissian,Alessandro Bacchetta,P. Bailey,D. Balin,M. Beckmann,S. Belostotski,N. Bianchi,H. P. Blok,H. Böttcher,A. Borissov,A. Borysenko,M. Bouwhuis,A. Brüll,V. Bryzgalov,G. P. Capitani,M. Cappiluppi,T. Chen,G. Ciullo,M. Contalbrigo,P. F. Dalpiaz,R. De Leo,M. Demey,L. De Nardo,E. De Sanctis,E. Devitsin,P. Di Nezza,Michael Düren,M. Ehrenfried,A. Elalaoui-Moulay,G. Elbakian,Frank Ellinghaus,U. Elschenbroich,Riccardo Fabbri,Alessandra Fantoni,A. Fechtchenko,L. Felawka,S. Frullani,G. Gapienko,V. A. Gapienko,F. Garibaldi,K. Garrow,G. Gavrilov,V. Gharibyan,O. Grebeniouk,I. M. Gregor,Cynthia Marie Hadjidakis,K. Hafidi,M. Hartig,D. Hasch,M. Henoch,W.H.A. Hesselink,A. Hillenbrand,M. Hoek,Y. Holler,B. Hommez,Ivana Hristova,G. Iarygin,Alexander Ilyichev,A. Ivanilov,Andrey V. Izotov,H. E. Jackson,A. Jgoun,Ralf Kaiser,E. R. Kinney,A. Kisselev,Tsutomu Kobayashi,M. Kopytin,V. A. Korotkov,V. A. Kozlov,B. Krauss,V. G. Krivokhijine,L. Lagamba,L. Lapikás,A. Laziev,P. Lenisa,P. Liebing,L. A. Linden-Levy,Wolfgang Lorenzon,H. Y. Lu,J. Lu,S. Lu,B. Q. Ma,B. Maiheu,Naomi C R Makins,Y. J. Mao,B. Marianski,H. Marukyan,F. Masoli,V. Mexner,N. Meyners,T. Michler,O. Mikloukho,C. A. Miller,Y. Miyachi,V. Muccifora,A. Nagaitsev,Eugenio Nappi,Y. Naryshkin,A. Nass,M. Negodaev,W.-D. Nowak,K. Oganessyan,H. Ohsuga,A. Osborne,N. Pickert,D. H. Potterveld,Martin Raithel,D. Reggiani,P. E. Reimer,A. Reischl,A. R. Reolon,C. Riedl,Klaus Rith,G. Rosner,A. Rostomyan,L. Rubacek,J. G. Rubin,Dirk Ryckbosch,Y. Salomatin,I. Sanjiev,I.A. Savin,Andreas Schäfer,Christian Schill,G. Schnell,K. P. Schüler,J. Seele,R. Seidl,B. Seitz,Rezo Shanidze,C. Shearer,T. A. Shibata,Vitaly Shutov,K. Sinram,W. Sommer,M. Stancari,M. Statera,E. Steffens,J. J. M. Steijger,Hasko Stenzel,J. Stewart,F. Stinzing,P. Tait,Hidekazu Tanaka,S. Taroian,B. Tchuiko,Adel Terkulov,A. Trzcinski,Michael Tytgat,Arne Vandenbroucke,P. B. van der Nat,G. van der Steenhoven,Y. Van Haarlem,Michel Vetterli,V. Vikhrov,Manuella Vincter,C. Vogel,J. Volmer,S. Wang,J. Wendland,J. Wilbert,G. V. Ybeles Smit,Y. X. Ye,Z. Ye,S. Yen,B. Zihlmann,P. Zupranski +174 more
TL;DR: Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization, and the Sivers asymmetry may be affected by exclusive vector meson production.
Journal ArticleDOI
The HERMES Spectrometer
K. Ackerstaff,A. Airapetian,N. Akopov,M. Amarian,V. Andreev,E.C. Aschenauer,R. Avakian,H. Avakian,A. Avetissian,B. Bains,S. Barrow,W. Beckhusen,M. Beckmann,St. Belostotski,E. Belz,Th. Benisch,S. Bernreuther,N. Bianchi,J. Blouw,H. Böttcher,A. Borissov,Jeffrey Brack,B. Braun,B. Braun,B. Bray,S. Brons,W. Brückner,A. Brull,H. J. Bulten,G.P. Capitani,P. Carter,P. Chumney,E. Cisbani,S. Clark,S. Colilli,H. Coombes,G.R. Court,P. P. J. Delheij,E. Devitsin,C. W. de Jager,E. De Sanctis,D. De Schepper,D. De Schepper,P.K.A. de Witt Huberts,P. Di Nezza,M. Doets,M. Düren,A. Dvoredsky,G. Elbakian,Joseph Emerson,Joseph Emerson,A. Fantoni,A. Fechtchenko,M. Ferstl,D. Fick,K. Fiedler,B. W. Filippone,H. Fischer,H. T. Fortune,J. Franz,S. Frullani,M.-A. Funk,N.D. Gagunashvili,P. Galumian,Haiyan Gao,Y. Gärber,F. Garibaldi,G. Gavrilov,P. Geiger,V. Gharibyan,V. Giordjian,F. Giuliani,A. Golendoukhin,B. Grabowski,G. Graw,O. Grebeniouk,P.W. Green,P.W. Green,G. Greeniaus,G. Greeniaus,M. Gricia,C. Grosshauser,A. Gute,J. P. Haas,K. Hakelberg,W. Haeberli,J. O. Hansen,D. Hasch,O. Häusser,O. Häusser,Robert Henderson,Th. Henkes,Ralf Hertenberger,Y. Holler,R. J. Holt,H. Ihssen,A. Izotov,M. Iodice,H. E. Jackson,A. Jgoun,C. E. Jones,Ralf Kaiser,Ralf Kaiser,J. Kelsey,E. R. Kinney,M. Kirsch,A. Kisselev,P. Kitching,Hiroaki Kobayashi,E. Kok,K. Königsmann,M. Kolstein,H. Kolster,Wolfgang Korsch,S. Kozlov,V. Kozlov,R.S. Kowalczyk,Laird Kramer,B. Krause,A. Krivchitch,V. G. Krivokhijine,M. Kueckes,P. Kutt,G. S. Kyle,W. Lachnit,R. R. Langstaff,Wolfgang Lorenzon,M. Lucentini,A. Lung,Naomi C R Makins,Victor Maleev,S. I. Manaenkov,K. Martens,A.O. Mateos,K. McIlhany,R. D. McKeown,F. Meißner,F. Menden,D. Mercer,A. Metz,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,M. A. Miller,Richard G. Milner,Valeri Valentinovitch Mitsyn,G. Modrak,J.M. Morton,R. Mozzetti,V. Muccifora,A. Nagaitsev,Y. Naryshkin,Alan M. Nathan,F. Neunreither,M. Niczyporuk,W.-D. Nowak,M. Nupieri,P. Oelwein,H. Ogami,Thomas O'Neill,R. Openshaw,V. Papavassiliou,S. F. Pate,S. F. Pate,S. Patrichev,Michael Pitt,H.J. Plett,H. R. Poolman,S. Potashov,D. H. Potterveld,Bogdan Povh,V. Prahl,G. Rakness,V. Razmyslovich,R. P. Redwine,A. R. Reolon,R. A. Ristinen,Klaus Rith,H.O. Roloff,G. Röper,P. Rossi,S. Rudnitsky,H Russo,Dirk Ryckbosch,Yasuhiro Sakemi,F. Santavenere,I.A. Savin,F. Schmidt,H. Schmitt,G. Schnell,K. P. Schüler,A. Schwind,T. A. Shibata,T. Shin,B. Siebels,A. Simon,A. Simon,K. Sinram,W.R. Smythe,J. Sowinski,M. Spengos,K. Sperber,E. Steffens,J. Stenger,J. Stewart,F. Stock,F. Stock,U. Stößlein,M. Sutter,H. Tallini,S. Taroian,Adel Terkulov,D.M. Thiessen,D.M. Thiessen,B. Tipton,V. Trofimov,A. Trudel,Michael Tytgat,G. M. Urciuoli,R. Van de Vyver,J. F. J. van den Brand,G. van der Steenhoven,J. van Hunen,D. van Westrum,A. Vassiliev,Michel Vetterli,Michel Vetterli,Manuella Vincter,E. Volk,W. Wander,T. P. Welch,S. E. Williamson,T. Wise,G. Wöbke,K. Woller,S. Yoneyama,K. Zapfe-Düren,T. Zeuli,H. Zohrabian +239 more
TL;DR: The HERMES experiment as mentioned in this paper collects data on inclusive and semi-inclusive deep inelastic scattering of polarised positrons from polarised targets of H, D, and 3 He.
Journal ArticleDOI
Evidence for a single-spin azimuthal asymmetry in semi-inclusive pion electroproduction.
A. Airapetian,M. Amarian,E. C. Aschenauer,J. Blouw,H. J. Bulten,de P.K.A. Witt Huberts,M. Guidal,Th. Henkes,H. Ihssen,M. Kolstein,van den J.F.J. Brand,van der G Steenhoven,van J.J. Hunen,J. Visser +13 more
TL;DR: In this paper, a significant target-spin asymmetry of the distribution in the azimuthal angle φ of the pion relative to the lepton scattering plane was formed for π^+ electroproduction on a longitudinally polarized hydrogen target.
Journal ArticleDOI
Evidence for a narrow |S |= 1 baryon state at a mass of 1528 MeV in quasi-real photoproduction
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,D. Balin,V. Baturin,M. Beckmann,S. Belostotski,S. Bernreuther,N. Bianchi,H. P. Blok,H. Böttcher,A. Borissov,A. Borysenko,M. Bouwhuis,Jeffrey Brack,A. Brüll,V. Bryzgalov,G.P. Capitani,T. Chen,Xun Chen,H. C. Chiang,G. Ciullo,M. Contalbrigo,P.F. Dalpiaz,Wouter Deconinck,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,Riccardo Fabbri,A. Fantoni,A. Fechtchenko,L. Felawka,B. D. Fox,S. Frullani,G. Gapienko,V. A. Gapienko,F. Garibaldi,K. Garrow,Erika Garutti,D. Gaskell,G. Gavrilov,V. Gharibyan,G. Graw,O. Grebeniouk,L. G. Greeniaus,Ingrid-Maria Gregor,K. Hafidi,M. Hartig,D. Hasch,D. Heesbeen,M. Henoch,Ralf Hertenberger,W.H.A. Hesselink,A. Hillenbrand,M. Hoek,Y. Holler,B. Hommez,G. Iarygin,A. Ivanilov,Andrey V. Izotov,H. E. Jackson,A. Jgoun,Ralf Kaiser,E. R. Kinney,A. Kisselev,M. Kopytin,V. A. Korotkov,V. Kozlov,B. Krauss,V. G. Krivokhijine,L. Lagamba,L. Lapikás,A. Laziev,P. Lenisa,P. Liebing,L. A. Linden-Levy,Katerina Lipka,Wolfgang Lorenzon,H. Y. Lu,J. Lu,S. Lu,X. R. Lu,Bo-Qiang Ma,B. Maiheu,Naomi C R Makins,Y. Mao,B. Marianski,H. Marukyan,F. Masoli,V. Mexner,N. Meyners,O. Mikloukho,C. A. Miller,Y. Miyachi,V. Muccifora,A. Nagaitsev,E. Nappi,Y. Naryshkin,A. Nass,M. Negodaev,W.-D. Nowak,K. Oganessyan,H. Ohsuga,N. Pickert,S. Potashov,D. H. Potterveld,Martin Raithel,D. Reggiani,P. E. Reimer,A. Reischl,A. R. Reolon,C. Riedl,Klaus Rith,G. Rosner,A. Rostomyan,L. Rubacek,J. G. Rubin,Dirk Ryckbosch,Y. Salomatin,I. Sanjiev,I. Sanjiev,I.A. Savin,Andreas Schäfer,C. Schill,G. Schnell,K. P. Schüler,J. Seele,R. Seidl,B. Seitz,R. Shanidze,C. Shearer,T. A. Shibata,V. Shutov,M. C. Simani,K. Sinram,M. Stancari,M. Statera,E. Steffens,J. J. M. Steijger,Hasko Stenzel,J. Stewart,F. Stinzing,U. Stosslein,P. Tait,Hidekazu Tanaka,S. Taroian,B. Tchuiko,Adel Terkulov,A. Tkabladze,A. Trzcinski,Michael Tytgat,Arne Vandenbroucke,P. B. van der Nat,G. van der Steenhoven,Michel Vetterli,V. Vikhrov,Manuella Vincter,C. Vogel,M. Vogt,J. Volmer,C. Weiskopf,J. Wendland,J. Wilbert,G. V. Ybeles Smit,Y. X. Ye,Z. Ye,S. Yen,W. Yu,B. Zihlmann,H. Zohrabian,P. Zupranski +188 more
TL;DR: In this article, a narrow baryon state is found in quasi-real photoproduction on a deuterium target through the decay channel pK0S→pπ+π−.
Journal ArticleDOI
Measurements of the Elastic Electromagnetic Form Factor Ratio Mu(P)G(Ep)/G(Mp) Via Polarization Transfer
Olivier Gayou,Olivier Gayou,K. Wijesooriya,Andrei Afanasev,Andrei Afanasev,M. Amarian,K. A. Aniol,S. Becher,K. Benslama,L. Bimbot,P. Bosted,E. J. Brash,J. R. Calarco,Z. Chai,C. C. Chang,T. Chang,Jian-Ping Chen,Seonho Choi,E. Chudakov,S. Churchwell,D. Crovelli,Sonja Dieterich,S. Dumalski,Dipanwita Dutta,M. B. Epstein,Kevin Fissum,B. D. Fox,S. Frullani,Haiyan Gao,J. Gao,F. Garibaldi,Ronald Gilman,Ronald Gilman,S. Glamazdin,Charles Glashausser,J. Gomez,V. Gorbenko,Olfred Hansen,R. J. Holt,J. Hovdebo,G. M. Huber,C. W. de Jager,X. Jiang,C. E. Jones,M. K. Jones,James J. Kelly,E. R. Kinney,Edgar E. Kooijman,G. Kumbartzki,M. Kuss,J. J. LeRose,M. Liang,R. A. Lindgren,Nilanga Liyanage,S. Malov,D. J. Margaziotis,Pete Markowitz,K. McCormick,D. Meekins,Z. E. Meziani,R. Michaels,John C. Mitchell,L. Morand,C. F. Perdrisat,R. I. Pomatsalyuk,V. A. Punjabi,Ronald Ransome,R. Roche,M. Rvachev,A. Saha,A. J. Sarty,A. J. Sarty,E. Schulte,E. Schulte,Daniel Simon,Steffen Strauch,R. Suleiman,L. Todor,P. E. Ulmer,G. M. Urciuoli,Bogdan Wojtsekhowski,F. Xiong,W. Xu +82 more
TL;DR: In this paper, the authors used the Jefferson Lab Hall Focal Plane Polarimeter to determine the longitudinal and transverse components of the recoil proton polarization in ep elastic scattering; the ratio of these polarization components is proportional to the proportion of the two form factors.