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Search for Medium Modifications of theρMeson
- Source :
- Nasseripour, R, Wood, M H, Djalali, C, Weygand, D P, Tur, C, Mosel, U, Muehlich, P, Adams, G, Amaryan, M J, Ambrozewicz, P, Anghinolfi, M, Asryan, G, Avakian, H, Bagdasaryan, H, Baillie, N, Ball, J P, Baltzell, N A, Barrow, S, Battaglieri, M, Bedlinskiy, I, Bektasoglu, M, Bellis, M, Benmouna, N, Berman, B L, Biselli, A S, Blaszczyk, L, Bouchigny, S, Boiarinov, S, Bradford, R, Branford, D, Briscoe, W J, Brooks, W K, Bültmann, S, Burkert, V D, Butuceanu, C, Calarco, J R, Careccia, S L, Carman, D S, Carnahan, B, Casey, L, Chen, S, Cole, P L, Collins, P, Coltharp, P, Crabb, D, Crannell, H, Crede, V, Cummings, J P, Dashyan, N, De Masi, R, De Vita, R, De Sanctis, E, Degtyarenko, P V, Denizli, H, Dennis, L, Deur, A, Dharmawardane, K V, Dickson, R, Dodge, G E, Doughty, D, Dugger, M, Dytman, S, Dzyubak, O P, Egiyan, H, Egiyan, K S, El Fassi, L, Elouadrhiri, L, Eugenio, P, Fedotov, G, Feldman, G, Feuerbach, R J, Funsten, H, Garçon, M, Gavalian, G, Gilfoyle, G P, Giovanetti, K L, Girod, F X, Goetz, J T, Gordon, C I O, Gothe, R W, Griffioen, K A, Guidal, M, Guler, N, Guo, L, Gyurjyan, V, Hadjidakis, C, Hafidi, K, Hakobyan, H, Hakobyan, R S, Hanretty, C, Hardie, J, Hersman, F W, Hicks, K, Hleiqawi, I, Holtrop, M, Hyde-Wright, C E, Ilieva, Y, Ireland, D G, Ishkhanov, B S, Isupov, E L, Ito, M M, Jenkins, D, Jo, H S, Johnstone, J R, Joo, K, Juengst, H G, Kalantarians, N, Kellie, J D, Khandaker, M, Kim, W, Klein, A, Klein, F J, Klimenko, A V, Kossov, M, Krahn, Z, Kramer, L H, Kubarovsky, V, Kuhn, J, Kuhn, S E, Kuleshov, S V, Lachniet, J, Laget, J M, Langheinrich, J, Lawrence, D, Li, J, Livingston, K, Lu, H Y, MacCormick, M, Markov, N, Mattione, P, McAleer, S, McKinnon, B, McNabb, J W C, Mecking, B A, Mehrabyan, S, Melone, J J, Mestayer, M D, Meyer, C A, Mibe, T, Mikhailov, K, Minehart, R, Mirazita, M, Miskimen, R, Mokeev, V, Moriya, K, Morrow, S A, Moteabbed, M, Mueller, J, Munevar, E, Mutchler, G S, Nadel-Turonski, P, Niccolai, S, Niculescu, G, Niculescu, I, Niczyporuk, B B, Niroula, M R, Niyazov, R A, Nozar, M, Osipenko, M, Ostrovidov, A I, Park, K, Pasyuk, E, Paterson, C, Pereira, S A, Pierce, J, Pivnyuk, N, Pocanic, D, Pogorelko, O, Pozdniakov, S, Preedom, B M, Price, J W, Prok, Y, Protopopescu, D, Raue, B A, Riccardi, G, Ricco, G, Ripani, M, Ritchie, B G, Ronchetti, F, Rosner, G, Rossi, P, Sabatié, F, Salamanca, J, Salgado, C, Santoro, J P, Sapunenko, V, Schumacher, R A, Serov, V S, Sharabian, Y G, Sharov, D, Shvedunov, N V, Smith, E S, Smith, L C, Sober, D I, Sokhan, D, Stavinsky, A, Stepanyan, S S, Stepanyan, S, Stokes, B E, Stoler, P, Strakovsky, I I, Strauch, S, Taiuti, M, Tedeschi, D J, Tkabladze, A, Tkachenko, S, Todor, L, Ungaro, M, Vineyard, M F, Vlassov, A V, Watts, D P, Weinstein, L B, Williams, M, Wolin, E, Yegneswaran, A, Zana, L, Zhang, B, Zhang, J, Zhao, B & Zhao, Z W 2007, ' Search for medium modifications of the ρ meson ', Physical Review Letters, vol. 99, no. 26, 262302 . https://doi.org/10.1103/PhysRevLett.99.262302
- Publication Year :
- 2007
- Publisher :
- American Physical Society (APS), 2007.
-
Abstract
- The photoproduction of vector mesons on various nuclei has been studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory. The vector mesons, $$\rho$$, $$\omega$$, and $$\phi$$, are observed via their decay to $e^+e^-$, in order to reduce the effects of final state interactions in the nucleus. Of particular interest are possible in-medium effects on the properties of the $$\rho$$ meson. The $$\rho$$ spectral function is extracted from the data on various nuclei, carbon, iron, and titanium, and compared to the spectrum from liquid deuterium, which is relatively free of nuclear effects. We observe no significant mass shift for the $$\rho$$ meson; however, there is some widening of the resonance in titanium and iron, which is consistent with expected collisional broadening.
- Subjects :
- Physics
Particle physics
Rho meson
Meson
Spectrometer
Nuclear Theory
Spectrum (functional analysis)
General Physics and Astronomy
Order (ring theory)
Physics and Astronomy(all)
Resonance (particle physics)
medicine.anatomical_structure
Deuterium
medicine
High Energy Physics::Experiment
Nuclear Experiment
Nucleus
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 99
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....d5bee37f1f6fd238a2bb521133b06156