Phys. Rev. C
71,
054609
(2005)
[14 pages]
Radiative decays of the Σ0(1385) and Λ(1520) hyperons
S. Taylor et al. CLAS Collaboration
Show All Authors/Affiliations
Hide All Authors/Affiliations
S. Taylor21, G. S. Mutchler32, G. Adams31, P. Ambrozewicz10, E. Anciant2, M. Anghinolfi16, B. Asavapibhop22, G. Asryan40, G. Audit2, H. Avakian35,15, H. Bagdasaryan27, J. P. Ball1, S. Barrow11, V. Batourine20, M. Battaglieri16, K. Beard19, M. Bektasoglu27, M. Bellis4, N. Benmouna13, B. L. Berman13, N. Bianchi15, A. S. Biselli4, S. Boiarinov35,18, B. E. Bonner32, S. Bouchigny17,35, R. Bradford4, D. Branford9, W. J. Briscoe13, W. K. Brooks35, S. Bültmann27, V. D. Burkert35, C. Butuceanu39, J. R. Calarco24, D. S. Carman26, B. Carnahan5, S. Chen11, P. L. Cole5,35, D. Cords35,*, P. Corvisiero16, D. Crabb38, H. Crannell5, J. P. Cummings31, E. De Sanctis15, R. DeVita16, P. V. Degtyarenko35, H. Denizli29, L. Dennis11, A. Deur35, K. V. Dharmawardane27, C. Djalali34, G. E. Dodge27, D. Doughty6,35, P. Dragovitsch11, M. Dugger1, S. Dytman29, O. P. Dzyubak34, H. Egiyan35, K. S. Egiyan40, L. Elouadrhiri35,6, A. Empl31, P. Eugenio11, R. Fatemi38, G. Feldman13, R. G. Fersch39, R. J. Feuerbach35, T. A. Forest27, H. Funsten39, M. Garçon2, G. Gavalian27, G. P. Gilfoyle33, K. L. Giovanetti19, E. Golovatch16,†, C. I. O. Gordon14, R. W. Gothe34, K. A. Griffioen39, M. Guidal17, M. Guillo34, N. Guler27, L. Guo35, V. Gyurjyan35, C. Hadjidakis17, R. S. Hakobyan5, J. Hardie6,35, D. Heddle6,35, F. W. Hersman24, K. Hicks26, I. Hleiqawi26, M. Holtrop24, J. Hu31, M. Huertas34, C. E. Hyde-Wright27, Y. Ilieva13, D. G. Ireland14, M. M. Ito35, D. Jenkins37, K. Joo7,38, H. G. Juengst13, J. D. Kellie14, M. Khandaker25, K. Y. Kim29, K. Kim20, W. Kim20, A. Klein27, F. J. Klein5, A. V. Klimenko27, M. Klusman31, M. Kossov18, V. Koubarovski31, L. H. Kramer10,35, S. E. Kuhn27, J. Kuhn4, J. Lachniet4, J. M. Laget2, J. Langheinrich34, D. Lawrence22, T. Lee24, Ji Li31, A. C. S. Lima13, K. Livingston14, K. Lukashin35,‡, J. J. Manak35, C. Marchand2, S. McAleer11, J. W. C McNabb28, B. A. Mecking35, J. J. Melone14, M. D. Mestayer35, C. A. Meyer4, K. Mikhailov18, M. Mirazita15, R. Miskimen22, V. Mokeev23, L. Morand2, S. A. Morrow2,17, V. Muccifora15, J. Mueller29, J. Napolitano31, R. Nasseripour10, S. Niccolai17,13, G. Niculescu19,26, I. Niculescu19,13, B. B. Niczyporuk35, R. A. Niyazov35,27, M. Nozar35, G. V. O'Rielly13, M. Osipenko16, A. I. Ostrovidov11, K. Park20, E. Pasyuk1, S. A. Philips13, N. Pivnyuk18, D. Pocanic38, O. Pogorelko18, E. Polli15, S. Pozdniakov18, B. M. Preedom34, J. W. Price3, Y. Prok38, D. Protopopescu14, L. M. Qin27, B. S. Raue10,35, G. Riccardi11, G. Ricco16, M. Ripani16, B. G. Ritchie1, F. Ronchetti15, G. Rosner14, P. Rossi15, D. Rowntree21, P. D. Rubin33, F. Sabatié2,27, C. Salgado25, J. P. Santoro37,35, V. Sapunenko35,16, R. A. Schumacher4, V. S. Serov18, A. Shafi13, Y. G. Sharabian35,40, J. Shaw22, S. Simionatto13, A. V. Skabelin21, E. S. Smith35, L. C. Smith38, D. I. Sober5, M. Spraker8, A. Stavinsky18, S. Stepanyan35, S. S. Stepanyan20, B. E. Stokes11, P. Stoler31, I. I. Strakovsky13, S. Strauch13, R. Suleiman21, M. Taiuti16, D. J. Tedeschi34, U. Thoma12,35, R. Thompson29, A. Tkabladze26, L. Todor33, C. Tur34, M. Ungaro7,31, M. F. Vineyard36,33, A. V. Vlassov18, K. Wang38, L. B. Weinstein27, H. Weller8, D. P. Weygand35, C. S. Whisnant34,§, M. Williams4, E. Wolin35, M. H. Wood34, A. Yegneswaran35, J. Yun27, and L. Zana24 (CLAS Collaboration)
1Arizona State University, Tempe, Arizona 85287-1504, USA
2Commisariat à l’Energie Atomique-Saclay, Service de Physique Nucléaire, F-91191 Gif-sur-Yvette, Cedex, France
3University of California at Los Angeles, Los Angeles, California 90095-1547, USA
4Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
5Catholic University of America, Washington, DC 20064, USA
6Christopher Newport University, Newport News, Virginia 23606, USA
7University of Connecticut, Storrs, Connecticut 06269, USA
8Duke University, Durham, North Carolina 27708-0305, USA
9Edinburgh University, Edinburgh EH9 3JZ, United Kingdom
10Florida International University, Miami, Florida 33199, USA
11Florida State University, Tallahassee, Florida 32306, USA
12Physikalisches Institut der Universitaet Giessen, D-35392 Giessen, Germany
13The George Washington University, Washington, DC 20052, USA
14University of Glasgow, Glasgow G12 8QQ, United Kingdom
15Instituto Nazionali di fisica Nucleare, Laboratori Nazionali di Frascati, Frascati, Italy
16Instituto Nazionali di fisica Nucleare, Sezione di Genova, I-16146 Genova, Italy
17Institut de Physique Nucleaire ORSAY, Orsay, France
18Institute of Theoretical and Experimental Physics, Moscow, RU-117259, Russia
19James Madison University, Harrisonburg, Virginia 22807, USA
20Kyungpook National University, Daegu 702-701, South Korea
21Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
22University of Massachusetts, Amherst, Massachusetts 01003, USA
23Moscow State University, General Nuclear Physics Institute, RU-119899 Moscow, Russia
24University of New Hampshire, Durham, New Hampshire 03824-3568, USA
25Norfolk State University, Norfolk, Virginia 23504, USA
26Ohio University, Athens, Ohio 45701, USA
27Old Dominion University, Norfolk, Virginia 23529, USA
28Penn State University, University Park, Pennsylvania 16802, USA
29University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
30Universita’ di ROMA III, I-00146 Roma, Italy
31Rensselaer Polytechnic Institute, Troy, New York 12180-3590, USA
32Rice University, Houston, Texas 77005-1892, USA
33University of Richmond, Richmond, Virginia 23173, USA
34University of South Carolina, Columbia, South Carolina 29208, USA
35Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
36Union College, Schenectady, New York 12308, USA
37Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0435, USA
38University of Virginia, Charlottesville, Virginia 22901, USA
39College of William and Mary, Williamsburg, Virginia 23187-8795, USA
40Yerevan Physics Institute, 375036 Yerevan, Armenia
See Also:
Erratum
Received 16 July 2004; revised 18 January 2005; published 31 May 2005
The electromagnetic decays of the Σ0(1385) and Λ(1520) hyperons were studied in photon-induced reactions γp→K+Λ(1116)γ in the Large Acceptance Spectrometer detector at the Thomas Jefferson National Accelerator Facility. We report the first observation of the radiative decay of the Σ0(1385) and a measurement of the Λ(1520) radiative decay width. For the Σ0(1385)→Λ(1116)γ transition, we measured a partial width of 479±120(stat)-100+81(sys) keV, larger than all of the existing model predictions. For the Λ(1520)→Λ(1116)γ transition, we obtained a partial width of 167±43(stat)-12+26(sys) keV.
© 2005 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.71.054609
DOI:
10.1103/PhysRevC.71.054609
PACS:
14.20.Jn, 13.30.Ce, 13.40.Hq
*Deceased. †Current address: Moscow State University, General Nuclear Physics Institute, RU-119899 Moscow, Russia. ‡Current address: Catholic University of America, Washington, DC 20064. §Current address: James Madison University, Harrisonburg, VA 22807.
See Also
Erratum:
S. Taylor et al. CLAS Collaboration,
Erratum: Radiative decays of the Σ0(1385) and Λ(1520) hyperons [Phys. Rev. C 71, 054609 (2005)],
Phys. Rev. C 72, 039902 (2005).
|
|
