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Page 1
Beam-helicity asymmetries in double-pion photoproduction off the proton.
Krambrich D, Zehr F, Fix A, Roca L, Aguar P, Ahrens J, Annand JR, Arends HJ, Beck R, Bekrenev V, Boillat B, Braghieri A, Branford D, Briscoe WJ, Brudvik J, Cherepnya S, Codling R, Downie EJ, Dexler P, Glazier DI, Grabmayr P, Gregor R, Heid E, Hornidge D, Jahn O, Kashevarov VL, Knezevic A, Kondratiev R, Korolija M, Kotulla M, Krusche B, Kulbardis A, Lang M, Lisin V, Livingston K, Lugert S, MacGregor IJ, Manley DM, Martinez M, McGeorge JC, Mekterovic D, Metag V, Nefkens BM, Nikolaev A, Pedroni P, Pheron F, Polonski A, Prakhov SN, Price JW, Rosner G, Rost M, Rostomyan T, Schumann S, Sober D, Starostin A, Supek I, Tarbert CM, Thomas A, Unverzagt M, Walcher T, Watts DP; Crystal Ball at MAMI, TAPS, and A2 Collaborations. Krambrich D, et al. Among authors: ahrens j. Phys Rev Lett. 2009 Jul 31;103(5):052002. doi: 10.1103/PhysRevLett.103.052002. Epub 2009 Jul 30. Phys Rev Lett. 2009. PMID: 19792489
Helicity dependence of gammap --> Npi below 450 MeV and contribution to the Gerasimov-Drell-Hearn sum rule.
Ahrens J, Altieri S, Annand JR, Anton G, Arends H, Aulenbacher K, Beck R, Bradtke C, Braghieri A, Degrande N, d'Hose N, Dutz H, Goertz S, Grabmayr P, Hansen K, Harmsen J, von Harrach D, Hasegawa S, Hasegawa T, Heid E, Helbing K, Holvoet H, Van Hoorebeke L, Horikawa N, Iwata T, Jennewein P, Kageya T, Kiel B, Klein F, Kondratiev R, Kossert K, Krimmer J, Lang M, Lannoy B, Leukel R, Lisin V, Matsuda T, McGeorge JC, Meier A, Menze D, Meyer W, Michel T, Naumann J, Owens RO, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E. Ahrens J, et al. Phys Rev Lett. 2000 Jun 26;84(26 Pt 1):5950-4. doi: 10.1103/PhysRevLett.84.5950. Phys Rev Lett. 2000. PMID: 10991096
Test of low-energy theorems for 1H(--> gamma, pi(0))(H)in the threshold hegion.
Schmidt A, Achenbach P, Ahrens J, Arends HJ, Beck R, Bernstein AM, Hejny V, Kotulla M, Krusche B, Kuhr V, Leukel R, MacGregor IJ, McGeorge JC, Metag V, Olmos De León VM, Rambo F, Siodlaczek U, Ströher H, Walcher T, Weiss J, Wissmann F, Wolf M. Schmidt A, et al. Among authors: ahrens j. Phys Rev Lett. 2001 Dec 3;87(23):232501. doi: 10.1103/PhysRevLett.87.232501. Epub 2001 Nov 15. Phys Rev Lett. 2001. PMID: 11736448
Helicity amplitudes A1/2 and A3/2 for the D13(1520) resonance obtained from the gamma-->p-->-->ppi(0) Reaction.
Ahrens J, Altieri S, Annand JR, Anton G, Arends HJ, Aulenbacher K, Beck R, Bradtke C, Braghieri A, Degrande N, D'Hose N, Drechsel D, Dutz H, Goertz S, Grabmayr P, Hansen K, Harmsen J, Von Harrach D, Hasegawa S, Hasegawa T, Heid E, Helbing K, Holvoet H, Van Hoorebeke L, Horikawa N, Iwata T, Jahn O, Jennewein P, Kageya T, Kamalov S, Kiel B, Klein F, Kondratiev R, Kossert K, Krimmer J, Lang M, Lannoy B, Leukel R, Lisin V, Matsuda T, McGeorge JC, Meier A, Menze D, Meyer W, Michel T, Naumann J, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E, Reichert E, Reicherz G, Rohlof Ch, Rosner G, Ryckbosch D, Sauer M, Schoch B, Schumacher M, Seitz B, Speckner T, Takabayashi N, Tamas G, Thomas A, Tiator L, Van Vyver R, Wakai A, Weihofen W, Wissmann F, Zapadtka F, Zeitler G. Ahrens J, et al. Phys Rev Lett. 2002 Jun 10;88(23):232002. doi: 10.1103/PhysRevLett.88.232002. Epub 2002 May 24. Phys Rev Lett. 2002. PMID: 12059355
The reaction gammap-->pi0gamma'p and the magnetic dipole moment of the Delta+ 1232 resonance.
Kotulla M, Ahrens J, Annand JR, Beck R, Caselotti G, Fog LS, Hornidge D, Janssen S, Krusche B, McGeorge JC, McGregor IJ, Mengel K, Messchendorp JG, Metag V, Novotny R, Pfeiffer M, Rost M, Sack S, Sanderson R, Schadmand S, Watts DP. Kotulla M, et al. Among authors: ahrens j. Phys Rev Lett. 2002 Dec 30;89(27):272001. doi: 10.1103/PhysRevLett.89.272001. Epub 2002 Dec 16. Phys Rev Lett. 2002. PMID: 12513194
Photoproduction of eta-mesic 3He.
Pfeiffer M, Ahrens J, Annand JR, Beck R, Caselotti G, Cherepnya S, Föhl K, Fog LS, Hornidge D, Janssen S, Kashevarov V, Kondratiev R, Kotulla M, Krusche B, McGeorge JC, MacGregor IJ, Mengel K, Messchendorp JG, Metag V, Novotny R, Rost M, Sack S, Sanderson R, Schadmand S, Thomas A, Watts DP. Pfeiffer M, et al. Among authors: ahrens j. Phys Rev Lett. 2004 Jun 25;92(25 Pt 1):252001. doi: 10.1103/PhysRevLett.92.252001. Epub 2004 Jun 24. Phys Rev Lett. 2004. PMID: 15244998
Measurement of helicity-dependent photoabsorption cross sections on the neutron from 815 to 1825 MeV.
Dutz H, Helbing K, Krimmer J, Speckner T, Zeitler G, Ahrens J, Altieri S, Annand JR, Anton G, Arends HJ, Beck R, Bock A, Bradtke C, Braghieri A, v Drachenfels W, Frommberger F, Godo M, Goertz S, Grabmayr P, Hasegawa S, Hansen K, Harmsen J, Heid E, Hillert W, Holvoet H, Horikawa N, Iwata T, Van Hoorebeke L, d'Hose N, Jennewein P, Kiel B, Klein F, Kondratiev R, Lang M, Lannoy B, Leukel R, Lisin V, Menze D, Meyer W, Michel T, Naumann J, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E, Reicherz G, Rohlof C, Rostomyan T, Sauer M, Schoch B, Schumacher M, Tamas G, Thomas A, van de Vyver R, Weihofen W, Zapadtka F; GDH Collaboration. Dutz H, et al. Among authors: ahrens j. Phys Rev Lett. 2005 Apr 29;94(16):162001. doi: 10.1103/PhysRevLett.94.162001. Epub 2005 Apr 28. Phys Rev Lett. 2005. PMID: 15904214
Measurement of the Gerasimov-Drell-Hearn Integrand for 2H from 200 to 800 MeV.
Ahrens J, Altieri S, Annand JR, Arends HJ, Beck R, Bradtke C, Braghieri A, d'Hose N, Dutz H, Goertz S, Grabmayr P, Hasegawa S, Heid E, Holvoet H, Van Hoorebeke L, Horikawa N, Iwata T, Jahn O, Jennewein P, Klein F, Kondratiev R, Lang M, Lannoy B, Lisin V, Martinez-Fabregate M, McGeorge JC, Meyer W, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Reicherz G, Rohlof Ch, Rosner G, Rost M, Rostomyan T, Ryckbosch D, Schumacher M, Seitz B, Tamas G, Thomas A, Van de Vyver R, Zapadtka F; GDH and A2 Collaborations. Ahrens J, et al. Phys Rev Lett. 2006 Nov 17;97(20):202303. doi: 10.1103/PhysRevLett.97.202303. Epub 2006 Nov 17. Phys Rev Lett. 2006. PMID: 17155680
Incoherent neutral pion photoproduction on 12C.
Tarbert CM, Watts DP, Aguar P, Ahrens J, Annand JR, Arends HJ, Beck R, Bekrenev V, Boillat B, Braghieri A, Branford D, Briscoe WJ, Brudvik J, Cherepnya S, Codling R, Downie EJ, Föhl K, Glazier DI, Grabmayr P, Gregor R, Heid E, Hornidge D, Jahn O, Kashevarov VL, Knezevic A, Kondratiev R, Korolija M, Kotulla M, Krambrich D, Krusche B, Lang M, Lisin V, Livingston K, Lugert S, Macgregor IJ, Manley DM, Martinez M, McGeorge JC, Mekterovic D, Metag V, Nefkens BM, Nikolaev A, Novotny R, Owens RO, Pedroni P, Polonski A, Prakhov SN, Price JW, Rosner G, Rost M, Rostomyan T, Schadmand S, Schumann S, Sober D, Starostin A, Supek I, Thomas A, Unverzagt M, Walcher T, Zehr F; Crystal Ball at MAMI Collaboration; A2 Collaboration. Tarbert CM, et al. Among authors: ahrens j. Phys Rev Lett. 2008 Apr 4;100(13):132301. doi: 10.1103/PhysRevLett.100.132301. Epub 2008 Apr 1. Phys Rev Lett. 2008. PMID: 18517938
Narrow structure in the excitation function of η photoproduction off the neutron.
Werthmüller D, Witthauer L, Keshelashvili I, Aguar-Bartolomé P, Ahrens J, Annand JR, Arends HJ, Bantawa K, Beck R, Bekrenev V, Braghieri A, Branford D, Briscoe WJ, Brudvik J, Cherepnya S, Demissie B, Dieterle M, Downie EJ, Drexler P, Fil'kov LV, Fix A, Glazier DI, Hamilton D, Heid E, Hornidge D, Howdle D, Huber GM, Jaegle I, Jahn O, Jude TC, Käser A, Kashevarov VL, Kondratiev R, Korolija M, Kruglov SP, Krusche B, Kulbardis A, Lisin V, Livingston K, MacGregor IJ, Maghrbi Y, Mancell J, Manley DM, Marinides Z, Martinez M, McGeorge JC, McNicoll EF, Metag V, Middleton DG, Mushkarenkov A, Nefkens BM, Nikolaev A, Novotny R, Oberle M, Ostrick M, Oussena B, Pedroni P, Pheron F, Polonski A, Prakhov SN, Robinson J, Rosner G, Rostomyan T, Schumann S, Sikora MH, Sober D, Starostin A, Supek I, Thiel M, Thomas A, Unverzagt M, Watts DP; Crystal Ball/TAPS experiment at MAMI, A2 Collaboration. Werthmüller D, et al. Among authors: ahrens j. Phys Rev Lett. 2013 Dec 6;111(23):232001. doi: 10.1103/PhysRevLett.111.232001. Epub 2013 Dec 4. Phys Rev Lett. 2013. PMID: 24476257 Free article.
263 results