Measurement of the Σ π photoproduction line shapes near the Λ ( 1405 )

The reaction gamma + p -> K+ + Sigma + pi was used to determine the invariant mass distributions or "line shapes" of the Sigma+ pi-, Sigma- pi+ and Sigma0 pi0 final states, from threshold at 1328 MeV/c^2 through the mass range of the Lambda(1405) and the Lambda(1520). The measurements w...

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Veröffentlicht in:Phys. Rev. C 2013-03, Vol.87 (3), Article 035206
Hauptverfasser: Moriya, K., Schumacher, R. A., Adhikari, K. P., Adikaram, D., Aghasyan, M., Anderson, M. D., Anefalos Pereira, S., Ball, J., Baltzell, N. A., Battaglieri, M., Batourine, V., Bedlinskiy, I., Bellis, M., Biselli, A. S., Bono, J., Boiarinov, S., Briscoe, W. J., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Cole, P. L., Collins, P., Crede, V., D’Angelo, A., Dashyan, N., De Sanctis, E., De Vita, R., Deur, A., Dey, B., Djalali, C., Doughty, D., Dupre, R., Egiyan, H., El Fassi, L., Eugenio, P., Fedotov, G., Fegan, S., Fersch, R., Fleming, J. A., Gevorgyan, N., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Gohn, W., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Heddle, D., Hicks, K., Ho, D., Holtrop, M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jo, H. S., Keller, D., Khandaker, M., Khetarpal, P., Kim, A., Kim, W., Klein, A., Klein, F. J., Koirala, S., Kubarovsky, A., Kubarovsky, V., Kuleshov, S. V., Kvaltine, N. D., Livingston, K., Lu, H. Y., MacGregor, I. J. D., Markov, N., Mayer, M., McCracken, M., McKinnon, B., Mestayer, M. D., Meyer, C. A., Mirazita, M., Mineeva, T., Mokeev, V., Montgomery, R. A., Munevar, E., Munoz Camacho, C., Nadel-Turonski, P., Nasseripour, R., Nepali, C. S., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A. I.
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container_issue 3
container_start_page
container_title Phys. Rev. C
container_volume 87
creator Moriya, K.
Schumacher, R. A.
Adhikari, K. P.
Adikaram, D.
Aghasyan, M.
Anderson, M. D.
Anefalos Pereira, S.
Ball, J.
Baltzell, N. A.
Battaglieri, M.
Batourine, V.
Bedlinskiy, I.
Bellis, M.
Biselli, A. S.
Bono, J.
Boiarinov, S.
Briscoe, W. J.
Burkert, V. D.
Carman, D. S.
Celentano, A.
Chandavar, S.
Charles, G.
Cole, P. L.
Collins, P.
Crede, V.
D’Angelo, A.
Dashyan, N.
De Sanctis, E.
De Vita, R.
Deur, A.
Dey, B.
Djalali, C.
Doughty, D.
Dupre, R.
Egiyan, H.
El Fassi, L.
Eugenio, P.
Fedotov, G.
Fegan, S.
Fersch, R.
Fleming, J. A.
Gevorgyan, N.
Gilfoyle, G. P.
Giovanetti, K. L.
Girod, F. X.
Goetz, J. T.
Gohn, W.
Golovatch, E.
Gothe, R. W.
Griffioen, K. A.
Guidal, M.
Hafidi, K.
Hakobyan, H.
Hanretty, C.
Harrison, N.
Heddle, D.
Hicks, K.
Ho, D.
Holtrop, M.
Hyde, C. E.
Ilieva, Y.
Ireland, D. G.
Ishkhanov, B. S.
Isupov, E. L.
Jo, H. S.
Keller, D.
Khandaker, M.
Khetarpal, P.
Kim, A.
Kim, W.
Klein, A.
Klein, F. J.
Koirala, S.
Kubarovsky, A.
Kubarovsky, V.
Kuleshov, S. V.
Kvaltine, N. D.
Livingston, K.
Lu, H. Y.
MacGregor, I. J. D.
Markov, N.
Mayer, M.
McCracken, M.
McKinnon, B.
Mestayer, M. D.
Meyer, C. A.
Mirazita, M.
Mineeva, T.
Mokeev, V.
Montgomery, R. A.
Munevar, E.
Munoz Camacho, C.
Nadel-Turonski, P.
Nasseripour, R.
Nepali, C. S.
Niccolai, S.
Niculescu, G.
Niculescu, I.
Osipenko, M.
Ostrovidov, A. I.
description The reaction gamma + p -> K+ + Sigma + pi was used to determine the invariant mass distributions or "line shapes" of the Sigma+ pi-, Sigma- pi+ and Sigma0 pi0 final states, from threshold at 1328 MeV/c^2 through the mass range of the Lambda(1405) and the Lambda(1520). The measurements were made with the CLAS system at Jefferson Lab using tagged real photons, for center-of-mass energies 1.95 < W < 2.85 GeV. The three mass distributions differ strongly in the vicinity of the I=0 \Lambda(1405), indicating the presence of substantial I=1 strength in the reaction. Background contributions to the data from the Sigma0(1385) and from K^* Sigma production were studied and shown to have negligible influence. To separate the isospin amplitudes, Breit-Wigner model fits were made that included channel-coupling distortions due to the NKbar threshold. A best fit to all the data was obtained after including a phenomenological I=1, J^P = 1/2^- amplitude with a centroid at 1394\pm20 MeV/c^2 and a second I=1 amplitude at 1413\pm10 MeV/c^2. The centroid of the I=0 Lambda(1405) strength was found at the Sigma pi threshold, with the observed shape determined largely by channel-coupling, leading to an apparent overall peak near 1405 MeV/c^2.
doi_str_mv 10.1103/PhysRevC.87.035206
format Article
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A. ; Adhikari, K. P. ; Adikaram, D. ; Aghasyan, M. ; Anderson, M. D. ; Anefalos Pereira, S. ; Ball, J. ; Baltzell, N. A. ; Battaglieri, M. ; Batourine, V. ; Bedlinskiy, I. ; Bellis, M. ; Biselli, A. S. ; Bono, J. ; Boiarinov, S. ; Briscoe, W. J. ; Burkert, V. D. ; Carman, D. S. ; Celentano, A. ; Chandavar, S. ; Charles, G. ; Cole, P. L. ; Collins, P. ; Crede, V. ; D’Angelo, A. ; Dashyan, N. ; De Sanctis, E. ; De Vita, R. ; Deur, A. ; Dey, B. ; Djalali, C. ; Doughty, D. ; Dupre, R. ; Egiyan, H. ; El Fassi, L. ; Eugenio, P. ; Fedotov, G. ; Fegan, S. ; Fersch, R. ; Fleming, J. A. ; Gevorgyan, N. ; Gilfoyle, G. P. ; Giovanetti, K. L. ; Girod, F. X. ; Goetz, J. T. ; Gohn, W. ; Golovatch, E. ; Gothe, R. W. ; Griffioen, K. A. ; Guidal, M. ; Hafidi, K. ; Hakobyan, H. ; Hanretty, C. ; Harrison, N. ; Heddle, D. ; Hicks, K. ; Ho, D. ; Holtrop, M. ; Hyde, C. E. ; Ilieva, Y. ; Ireland, D. G. ; Ishkhanov, B. S. ; Isupov, E. L. ; Jo, H. 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L. ; Collins, P. ; Crede, V. ; D’Angelo, A. ; Dashyan, N. ; De Sanctis, E. ; De Vita, R. ; Deur, A. ; Dey, B. ; Djalali, C. ; Doughty, D. ; Dupre, R. ; Egiyan, H. ; El Fassi, L. ; Eugenio, P. ; Fedotov, G. ; Fegan, S. ; Fersch, R. ; Fleming, J. A. ; Gevorgyan, N. ; Gilfoyle, G. P. ; Giovanetti, K. L. ; Girod, F. X. ; Goetz, J. T. ; Gohn, W. ; Golovatch, E. ; Gothe, R. W. ; Griffioen, K. A. ; Guidal, M. ; Hafidi, K. ; Hakobyan, H. ; Hanretty, C. ; Harrison, N. ; Heddle, D. ; Hicks, K. ; Ho, D. ; Holtrop, M. ; Hyde, C. E. ; Ilieva, Y. ; Ireland, D. G. ; Ishkhanov, B. S. ; Isupov, E. L. ; Jo, H. S. ; Keller, D. ; Khandaker, M. ; Khetarpal, P. ; Kim, A. ; Kim, W. ; Klein, A. ; Klein, F. J. ; Koirala, S. ; Kubarovsky, A. ; Kubarovsky, V. ; Kuleshov, S. V. ; Kvaltine, N. D. ; Livingston, K. ; Lu, H. Y. ; MacGregor, I. J. D. ; Markov, N. ; Mayer, M. ; McCracken, M. ; McKinnon, B. ; Mestayer, M. D. ; Meyer, C. A. ; Mirazita, M. ; Mineeva, T. ; Mokeev, V. ; Montgomery, R. A. ; Munevar, E. ; Munoz Camacho, C. ; Nadel-Turonski, P. ; Nasseripour, R. ; Nepali, C. S. ; Niccolai, S. ; Niculescu, G. ; Niculescu, I. ; Osipenko, M. ; Ostrovidov, A. I. ; CLAS Collaboration ; Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)</creatorcontrib><description>The reaction gamma + p -&gt; K+ + Sigma + pi was used to determine the invariant mass distributions or "line shapes" of the Sigma+ pi-, Sigma- pi+ and Sigma0 pi0 final states, from threshold at 1328 MeV/c^2 through the mass range of the Lambda(1405) and the Lambda(1520). The measurements were made with the CLAS system at Jefferson Lab using tagged real photons, for center-of-mass energies 1.95 &lt; W &lt; 2.85 GeV. The three mass distributions differ strongly in the vicinity of the I=0 \Lambda(1405), indicating the presence of substantial I=1 strength in the reaction. Background contributions to the data from the Sigma0(1385) and from K^* Sigma production were studied and shown to have negligible influence. To separate the isospin amplitudes, Breit-Wigner model fits were made that included channel-coupling distortions due to the NKbar threshold. A best fit to all the data was obtained after including a phenomenological I=1, J^P = 1/2^- amplitude with a centroid at 1394\pm20 MeV/c^2 and a second I=1 amplitude at 1413\pm10 MeV/c^2. 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A.</creatorcontrib><creatorcontrib>Mirazita, M.</creatorcontrib><creatorcontrib>Mineeva, T.</creatorcontrib><creatorcontrib>Mokeev, V.</creatorcontrib><creatorcontrib>Montgomery, R. A.</creatorcontrib><creatorcontrib>Munevar, E.</creatorcontrib><creatorcontrib>Munoz Camacho, C.</creatorcontrib><creatorcontrib>Nadel-Turonski, P.</creatorcontrib><creatorcontrib>Nasseripour, R.</creatorcontrib><creatorcontrib>Nepali, C. S.</creatorcontrib><creatorcontrib>Niccolai, S.</creatorcontrib><creatorcontrib>Niculescu, G.</creatorcontrib><creatorcontrib>Niculescu, I.</creatorcontrib><creatorcontrib>Osipenko, M.</creatorcontrib><creatorcontrib>Ostrovidov, A. I.</creatorcontrib><creatorcontrib>CLAS Collaboration</creatorcontrib><creatorcontrib>Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)</creatorcontrib><title>Measurement of the Σ π photoproduction line shapes near the Λ ( 1405 )</title><title>Phys. Rev. C</title><description>The reaction gamma + p -&gt; K+ + Sigma + pi was used to determine the invariant mass distributions or "line shapes" of the Sigma+ pi-, Sigma- pi+ and Sigma0 pi0 final states, from threshold at 1328 MeV/c^2 through the mass range of the Lambda(1405) and the Lambda(1520). The measurements were made with the CLAS system at Jefferson Lab using tagged real photons, for center-of-mass energies 1.95 &lt; W &lt; 2.85 GeV. The three mass distributions differ strongly in the vicinity of the I=0 \Lambda(1405), indicating the presence of substantial I=1 strength in the reaction. Background contributions to the data from the Sigma0(1385) and from K^* Sigma production were studied and shown to have negligible influence. To separate the isospin amplitudes, Breit-Wigner model fits were made that included channel-coupling distortions due to the NKbar threshold. A best fit to all the data was obtained after including a phenomenological I=1, J^P = 1/2^- amplitude with a centroid at 1394\pm20 MeV/c^2 and a second I=1 amplitude at 1413\pm10 MeV/c^2. The centroid of the I=0 Lambda(1405) strength was found at the Sigma pi threshold, with the observed shape determined largely by channel-coupling, leading to an apparent overall peak near 1405 MeV/c^2.</description><subject>High Energy Physics - Experiment</subject><subject>Nuclear Experiment</subject><subject>Physics</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><issn>0556-2813</issn><issn>2469-9985</issn><issn>1089-490X</issn><issn>2469-9993</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNo90M1KxDAQwPEgCq4fL-ApeFKk6yRp2uS4LOourCii4C2k6ZRWdpvSZIW9-R4efR99JVeqzmUuv5nDn5ATBmPGQFze15vwgK_TscrHICSHbIeMGCidpBqed8kIpMwSrpjYJwchvMB2hMhGZH6LNqx7XGEbqa9orJF-ftCvN9rVPvqu9-Xaxca3dNm0SENtOwy0RdsP9J2eUZaCpOdHZK-yy4DHv_uQPF1fPU5nyeLuZj6dLBLHU4hJpYsMyjQvOVNcCtSaF5KVwBnyTOqcFRJZgYzLXMuiUKyyTiuBsrRK2kyJQ3I6_PUhNia4JqKrnW9bdNEwyJSS6RZdDKi2S9P1zcr2G-NtY2aThWla3gkDkCuANH9lW80H7XofQo_V_wkD89PX_PU1KjdDX_ENSKtuAw</recordid><startdate>20130301</startdate><enddate>20130301</enddate><creator>Moriya, K.</creator><creator>Schumacher, R. 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D.</creator><creator>Markov, N.</creator><creator>Mayer, M.</creator><creator>McCracken, M.</creator><creator>McKinnon, B.</creator><creator>Mestayer, M. D.</creator><creator>Meyer, C. A.</creator><creator>Mirazita, M.</creator><creator>Mineeva, T.</creator><creator>Mokeev, V.</creator><creator>Montgomery, R. A.</creator><creator>Munevar, E.</creator><creator>Munoz Camacho, C.</creator><creator>Nadel-Turonski, P.</creator><creator>Nasseripour, R.</creator><creator>Nepali, C. S.</creator><creator>Niccolai, S.</creator><creator>Niculescu, G.</creator><creator>Niculescu, I.</creator><creator>Osipenko, M.</creator><creator>Ostrovidov, A. I.</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0001-7621-5612</orcidid><orcidid>https://orcid.org/0000-0002-9978-2510</orcidid><orcidid>https://orcid.org/0000-0001-9833-3695</orcidid><orcidid>https://orcid.org/0000-0002-5497-8309</orcidid><orcidid>https://orcid.org/0000-0003-3050-4907</orcidid><orcidid>https://orcid.org/0000-0001-8632-7538</orcidid><orcidid>https://orcid.org/0000-0002-1774-4802</orcidid><orcidid>https://orcid.org/0000-0002-0289-0866</orcidid><orcidid>https://orcid.org/0000-0002-1434-052X</orcidid><orcidid>https://orcid.org/0000-0002-8047-6513</orcidid><orcidid>https://orcid.org/0000-0001-9618-3013</orcidid><orcidid>https://orcid.org/0000-0002-5881-3616</orcidid><orcidid>https://orcid.org/0000-0003-3877-1815</orcidid><orcidid>https://orcid.org/0000-0003-4990-3369</orcidid><orcidid>https://orcid.org/0000-0002-7104-2983</orcidid><orcidid>https://orcid.org/0000-0001-7935-8221</orcidid><orcidid>https://orcid.org/0000-0002-8005-9787</orcidid><orcidid>https://orcid.org/0000-0002-1110-1152</orcidid><orcidid>https://orcid.org/0000-0003-0370-9536</orcidid><orcidid>https://orcid.org/0000-0002-2203-7723</orcidid><orcidid>https://orcid.org/0000-0003-0545-942X</orcidid><orcidid>https://orcid.org/0000-0002-2608-1270</orcidid><orcidid>https://orcid.org/0000-0002-9922-1350</orcidid><orcidid>https://orcid.org/0000-0002-4557-1320</orcidid></search><sort><creationdate>20130301</creationdate><title>Measurement of the Σ π photoproduction line shapes near the Λ ( 1405 )</title><author>Moriya, K. ; Schumacher, R. A. ; Adhikari, K. P. ; Adikaram, D. ; Aghasyan, M. ; Anderson, M. D. ; Anefalos Pereira, S. ; Ball, J. ; Baltzell, N. A. ; Battaglieri, M. ; Batourine, V. ; Bedlinskiy, I. ; Bellis, M. ; Biselli, A. S. ; Bono, J. ; Boiarinov, S. ; Briscoe, W. J. ; Burkert, V. D. ; Carman, D. S. ; Celentano, A. ; Chandavar, S. ; Charles, G. ; Cole, P. L. ; Collins, P. ; Crede, V. ; D’Angelo, A. ; Dashyan, N. ; De Sanctis, E. ; De Vita, R. ; Deur, A. ; Dey, B. ; Djalali, C. ; Doughty, D. ; Dupre, R. ; Egiyan, H. ; El Fassi, L. ; Eugenio, P. ; Fedotov, G. ; Fegan, S. ; Fersch, R. ; Fleming, J. A. ; Gevorgyan, N. ; Gilfoyle, G. P. ; Giovanetti, K. L. ; Girod, F. X. ; Goetz, J. T. ; Gohn, W. ; Golovatch, E. ; Gothe, R. W. ; Griffioen, K. A. ; Guidal, M. ; Hafidi, K. ; Hakobyan, H. ; Hanretty, C. ; Harrison, N. ; Heddle, D. ; Hicks, K. ; Ho, D. ; Holtrop, M. ; Hyde, C. E. ; Ilieva, Y. ; Ireland, D. G. ; Ishkhanov, B. S. ; Isupov, E. L. ; Jo, H. S. ; Keller, D. ; Khandaker, M. ; Khetarpal, P. ; Kim, A. ; Kim, W. ; Klein, A. ; Klein, F. J. ; Koirala, S. ; Kubarovsky, A. ; Kubarovsky, V. ; Kuleshov, S. V. ; Kvaltine, N. D. ; Livingston, K. ; Lu, H. Y. ; MacGregor, I. J. D. ; Markov, N. ; Mayer, M. ; McCracken, M. ; McKinnon, B. ; Mestayer, M. D. ; Meyer, C. A. ; Mirazita, M. ; Mineeva, T. ; Mokeev, V. ; Montgomery, R. A. ; Munevar, E. ; Munoz Camacho, C. ; Nadel-Turonski, P. ; Nasseripour, R. ; Nepali, C. S. ; Niccolai, S. ; Niculescu, G. ; Niculescu, I. ; Osipenko, M. ; Ostrovidov, A. I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c240t-f9b60d47d218253e992b51d021e265971b5e1be125795bb81fac983e5da85a683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>High Energy Physics - Experiment</topic><topic>Nuclear Experiment</topic><topic>Physics</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Moriya, K.</creatorcontrib><creatorcontrib>Schumacher, R. A.</creatorcontrib><creatorcontrib>Adhikari, K. P.</creatorcontrib><creatorcontrib>Adikaram, D.</creatorcontrib><creatorcontrib>Aghasyan, M.</creatorcontrib><creatorcontrib>Anderson, M. D.</creatorcontrib><creatorcontrib>Anefalos Pereira, S.</creatorcontrib><creatorcontrib>Ball, J.</creatorcontrib><creatorcontrib>Baltzell, N. 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L.</creatorcontrib><creatorcontrib>Collins, P.</creatorcontrib><creatorcontrib>Crede, V.</creatorcontrib><creatorcontrib>D’Angelo, A.</creatorcontrib><creatorcontrib>Dashyan, N.</creatorcontrib><creatorcontrib>De Sanctis, E.</creatorcontrib><creatorcontrib>De Vita, R.</creatorcontrib><creatorcontrib>Deur, A.</creatorcontrib><creatorcontrib>Dey, B.</creatorcontrib><creatorcontrib>Djalali, C.</creatorcontrib><creatorcontrib>Doughty, D.</creatorcontrib><creatorcontrib>Dupre, R.</creatorcontrib><creatorcontrib>Egiyan, H.</creatorcontrib><creatorcontrib>El Fassi, L.</creatorcontrib><creatorcontrib>Eugenio, P.</creatorcontrib><creatorcontrib>Fedotov, G.</creatorcontrib><creatorcontrib>Fegan, S.</creatorcontrib><creatorcontrib>Fersch, R.</creatorcontrib><creatorcontrib>Fleming, J. A.</creatorcontrib><creatorcontrib>Gevorgyan, N.</creatorcontrib><creatorcontrib>Gilfoyle, G. P.</creatorcontrib><creatorcontrib>Giovanetti, K. L.</creatorcontrib><creatorcontrib>Girod, F. X.</creatorcontrib><creatorcontrib>Goetz, J. T.</creatorcontrib><creatorcontrib>Gohn, W.</creatorcontrib><creatorcontrib>Golovatch, E.</creatorcontrib><creatorcontrib>Gothe, R. W.</creatorcontrib><creatorcontrib>Griffioen, K. A.</creatorcontrib><creatorcontrib>Guidal, M.</creatorcontrib><creatorcontrib>Hafidi, K.</creatorcontrib><creatorcontrib>Hakobyan, H.</creatorcontrib><creatorcontrib>Hanretty, C.</creatorcontrib><creatorcontrib>Harrison, N.</creatorcontrib><creatorcontrib>Heddle, D.</creatorcontrib><creatorcontrib>Hicks, K.</creatorcontrib><creatorcontrib>Ho, D.</creatorcontrib><creatorcontrib>Holtrop, M.</creatorcontrib><creatorcontrib>Hyde, C. E.</creatorcontrib><creatorcontrib>Ilieva, Y.</creatorcontrib><creatorcontrib>Ireland, D. G.</creatorcontrib><creatorcontrib>Ishkhanov, B. S.</creatorcontrib><creatorcontrib>Isupov, E. L.</creatorcontrib><creatorcontrib>Jo, H. 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A.</creatorcontrib><creatorcontrib>Mirazita, M.</creatorcontrib><creatorcontrib>Mineeva, T.</creatorcontrib><creatorcontrib>Mokeev, V.</creatorcontrib><creatorcontrib>Montgomery, R. A.</creatorcontrib><creatorcontrib>Munevar, E.</creatorcontrib><creatorcontrib>Munoz Camacho, C.</creatorcontrib><creatorcontrib>Nadel-Turonski, P.</creatorcontrib><creatorcontrib>Nasseripour, R.</creatorcontrib><creatorcontrib>Nepali, C. S.</creatorcontrib><creatorcontrib>Niccolai, S.</creatorcontrib><creatorcontrib>Niculescu, G.</creatorcontrib><creatorcontrib>Niculescu, I.</creatorcontrib><creatorcontrib>Osipenko, M.</creatorcontrib><creatorcontrib>Ostrovidov, A. I.</creatorcontrib><creatorcontrib>CLAS Collaboration</creatorcontrib><creatorcontrib>Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV</collection><jtitle>Phys. Rev. C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Moriya, K.</au><au>Schumacher, R. A.</au><au>Adhikari, K. P.</au><au>Adikaram, D.</au><au>Aghasyan, M.</au><au>Anderson, M. D.</au><au>Anefalos Pereira, S.</au><au>Ball, J.</au><au>Baltzell, N. A.</au><au>Battaglieri, M.</au><au>Batourine, V.</au><au>Bedlinskiy, I.</au><au>Bellis, M.</au><au>Biselli, A. S.</au><au>Bono, J.</au><au>Boiarinov, S.</au><au>Briscoe, W. J.</au><au>Burkert, V. D.</au><au>Carman, D. S.</au><au>Celentano, A.</au><au>Chandavar, S.</au><au>Charles, G.</au><au>Cole, P. L.</au><au>Collins, P.</au><au>Crede, V.</au><au>D’Angelo, A.</au><au>Dashyan, N.</au><au>De Sanctis, E.</au><au>De Vita, R.</au><au>Deur, A.</au><au>Dey, B.</au><au>Djalali, C.</au><au>Doughty, D.</au><au>Dupre, R.</au><au>Egiyan, H.</au><au>El Fassi, L.</au><au>Eugenio, P.</au><au>Fedotov, G.</au><au>Fegan, S.</au><au>Fersch, R.</au><au>Fleming, J. A.</au><au>Gevorgyan, N.</au><au>Gilfoyle, G. P.</au><au>Giovanetti, K. L.</au><au>Girod, F. X.</au><au>Goetz, J. T.</au><au>Gohn, W.</au><au>Golovatch, E.</au><au>Gothe, R. W.</au><au>Griffioen, K. A.</au><au>Guidal, M.</au><au>Hafidi, K.</au><au>Hakobyan, H.</au><au>Hanretty, C.</au><au>Harrison, N.</au><au>Heddle, D.</au><au>Hicks, K.</au><au>Ho, D.</au><au>Holtrop, M.</au><au>Hyde, C. E.</au><au>Ilieva, Y.</au><au>Ireland, D. G.</au><au>Ishkhanov, B. S.</au><au>Isupov, E. L.</au><au>Jo, H. S.</au><au>Keller, D.</au><au>Khandaker, M.</au><au>Khetarpal, P.</au><au>Kim, A.</au><au>Kim, W.</au><au>Klein, A.</au><au>Klein, F. J.</au><au>Koirala, S.</au><au>Kubarovsky, A.</au><au>Kubarovsky, V.</au><au>Kuleshov, S. V.</au><au>Kvaltine, N. D.</au><au>Livingston, K.</au><au>Lu, H. Y.</au><au>MacGregor, I. J. D.</au><au>Markov, N.</au><au>Mayer, M.</au><au>McCracken, M.</au><au>McKinnon, B.</au><au>Mestayer, M. D.</au><au>Meyer, C. A.</au><au>Mirazita, M.</au><au>Mineeva, T.</au><au>Mokeev, V.</au><au>Montgomery, R. A.</au><au>Munevar, E.</au><au>Munoz Camacho, C.</au><au>Nadel-Turonski, P.</au><au>Nasseripour, R.</au><au>Nepali, C. S.</au><au>Niccolai, S.</au><au>Niculescu, G.</au><au>Niculescu, I.</au><au>Osipenko, M.</au><au>Ostrovidov, A. I.</au><aucorp>CLAS Collaboration</aucorp><aucorp>Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Measurement of the Σ π photoproduction line shapes near the Λ ( 1405 )</atitle><jtitle>Phys. Rev. C</jtitle><date>2013-03-01</date><risdate>2013</risdate><volume>87</volume><issue>3</issue><artnum>035206</artnum><issn>0556-2813</issn><issn>2469-9985</issn><eissn>1089-490X</eissn><eissn>2469-9993</eissn><abstract>The reaction gamma + p -&gt; K+ + Sigma + pi was used to determine the invariant mass distributions or "line shapes" of the Sigma+ pi-, Sigma- pi+ and Sigma0 pi0 final states, from threshold at 1328 MeV/c^2 through the mass range of the Lambda(1405) and the Lambda(1520). The measurements were made with the CLAS system at Jefferson Lab using tagged real photons, for center-of-mass energies 1.95 &lt; W &lt; 2.85 GeV. The three mass distributions differ strongly in the vicinity of the I=0 \Lambda(1405), indicating the presence of substantial I=1 strength in the reaction. Background contributions to the data from the Sigma0(1385) and from K^* Sigma production were studied and shown to have negligible influence. To separate the isospin amplitudes, Breit-Wigner model fits were made that included channel-coupling distortions due to the NKbar threshold. A best fit to all the data was obtained after including a phenomenological I=1, J^P = 1/2^- amplitude with a centroid at 1394\pm20 MeV/c^2 and a second I=1 amplitude at 1413\pm10 MeV/c^2. The centroid of the I=0 Lambda(1405) strength was found at the Sigma pi threshold, with the observed shape determined largely by channel-coupling, leading to an apparent overall peak near 1405 MeV/c^2.</abstract><cop>United States</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevC.87.035206</doi><orcidid>https://orcid.org/0000-0001-7621-5612</orcidid><orcidid>https://orcid.org/0000-0002-9978-2510</orcidid><orcidid>https://orcid.org/0000-0001-9833-3695</orcidid><orcidid>https://orcid.org/0000-0002-5497-8309</orcidid><orcidid>https://orcid.org/0000-0003-3050-4907</orcidid><orcidid>https://orcid.org/0000-0001-8632-7538</orcidid><orcidid>https://orcid.org/0000-0002-1774-4802</orcidid><orcidid>https://orcid.org/0000-0002-0289-0866</orcidid><orcidid>https://orcid.org/0000-0002-1434-052X</orcidid><orcidid>https://orcid.org/0000-0002-8047-6513</orcidid><orcidid>https://orcid.org/0000-0001-9618-3013</orcidid><orcidid>https://orcid.org/0000-0002-5881-3616</orcidid><orcidid>https://orcid.org/0000-0003-3877-1815</orcidid><orcidid>https://orcid.org/0000-0003-4990-3369</orcidid><orcidid>https://orcid.org/0000-0002-7104-2983</orcidid><orcidid>https://orcid.org/0000-0001-7935-8221</orcidid><orcidid>https://orcid.org/0000-0002-8005-9787</orcidid><orcidid>https://orcid.org/0000-0002-1110-1152</orcidid><orcidid>https://orcid.org/0000-0003-0370-9536</orcidid><orcidid>https://orcid.org/0000-0002-2203-7723</orcidid><orcidid>https://orcid.org/0000-0003-0545-942X</orcidid><orcidid>https://orcid.org/0000-0002-2608-1270</orcidid><orcidid>https://orcid.org/0000-0002-9922-1350</orcidid><orcidid>https://orcid.org/0000-0002-4557-1320</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 0556-2813
ispartof Phys. Rev. C, 2013-03, Vol.87 (3), Article 035206
issn 0556-2813
2469-9985
1089-490X
2469-9993
language eng
recordid cdi_hal_primary_oai_HAL_in2p3_00780047v1
source American Physical Society Journals
subjects High Energy Physics - Experiment
Nuclear Experiment
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
title Measurement of the Σ π photoproduction line shapes near the Λ ( 1405 )
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