دورية أكاديمية
Measurement of eta meson production in gamma gamma interactions and Gamma(eta -> gamma gamma) with the KLOE detector
| العنوان: | Measurement of eta meson production in gamma gamma interactions and Gamma(eta -> gamma gamma) with the KLOE detector |
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| المؤلفون: | D. Babusci, D. Badoni, I. Balwierz Pytko, G. Bencivenni, C. Bini, C. Bloise, F. Bossi, P. Branchini, A. Budano, L. C. Balkestahl, G. Capon, F. Ceradini, P. Ciambrone, E. Czerwinski, E. Dane, E. D. Lucia, G. D. Robertis, A. D. Santis, A. D. Domenico, C. D. Donato, R. D. Salvo, D. Domenici, O. Erriquez, G. Fanizzi, A. Fantini, G. Felici, S. Fiore, P. Franzini, P. Gauzzi, S. Giovannella, F. Gonnella, E. Graziani, F. Happacher, L. Heijkenskjold, B. Hoistad, L. Iafolla, M. Jacewicz, T. Johansson, A. Kupsc, J. Lee Franzini, B. Leverington, F. Loddo, S. Loffredo, M. Martemianov, M. Martini, M. Mascolo, R. Messi, S. Miscetti, G. Morello, D. Moricciani, P. Moskal, F. Nguyen, A. Passeri, V. Patera, I. P. Longhi, A. Ranieri, C. F. Redmer, P. Santangelo, I. Sarra, M. Schioppa, B. Sciascia, M. Silarski, C. Taccini, L. Tortora, G. Venanzoni, W. Wislicki, M. Wolke, J. Zdebik, GIARDINA, Giorgio 42, MANDAGLIO, GIUSEPPE |
| المساهمون: | D. Babusci, D. Badoni, I. Balwierz-Pytko, G. Bencivenni, C. Bini, C. Bloise, F. Bossi, P. Branchini, A. Budano, L. C. Balkestahl, G. Capon, F. Ceradini, P. Ciambrone, E. Czerwinski, E. Dane, E. D. Lucia, G. D. Roberti, A. D. Santi, A. D. Domenico, C. D. Donato, R. D. Salvo, D. Domenici, O. Erriquez, G. Fanizzi, A. Fantini, G. Felici, S. Fiore, P. Franzini, P. Gauzzi, G. Giardina, S. Giovannella, F. Gonnella, E. Graziani, F. Happacher, L. Heijkenskjold, B. Hoistad, L. Iafolla, M. Jacewicz, T. Johansson, A. Kupsc, J. Lee-Franzini, B. Leverington, F. Loddo, S. Loffredo, G. Mandaglio, M. Martemianov, M. Martini, M. Mascolo, R. Messi, S. Miscetti, G. Morello, D. Moricciani, P. Moskal, F. Nguyen, A. Passeri, V. Patera, I. P. Longhi, A. Ranieri, C. F. Redmer, P. Santangelo, I. Sarra, M. Schioppa, B. Sciascia, M. Silarski, C. Taccini, L. Tortora, G. Venanzoni, W. Wislicki, M. Wolke, J. Zdebik |
| سنة النشر: | 2013 |
| المجموعة: | Università degli Studi di Messina: IRIS |
| مصطلحات موضوعية: | TRANSITION FORM-FACTORS, DA-PHI-NE, 2-PHOTON, SCATTERING, COLLISIONS, WIDTH, PI-0 |
| الوصف: | We present a measurement of eta meson production in photon-photon interactions produced by electron-positron beams colliding with root s = 1 GeV. The measurement is done with the KLOE detector at the phi-factory DA Phi NE with an integrated luminosity of 0.24 fb(-1). The e(+)e(-) -> e(+)e(-)eta cross section is measured without detecting the outgoing electron and positron, selecting the decays eta -> pi(+)pi(-)pi(0) and eta -> pi(0)pi(0)pi(0). The most relevant background is due to e(+)e(-) -> eta gamma when the monochromatic photon escapes detection. The cross section for this process is measured as sigma(e(+)e(-) -> eta gamma) = (856 +/- 8(stat) +/- 16(syst)) pb. The combined result for the e(+)e(-) -> e(+)e(-)eta cross section is sigma(e(+)e(-) -> e(+)e(-)eta) = (32.72 +/- 1.27(stat) +/- 0.70(syst)) pb. From this we derive the partial width Gamma(eta -> gamma gamma) = (520 +/- 20(stat) +/- 13(syst)) eV. This is in agreement with the world average and is the most precise measurement to date. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/wos/WOS:000315583600038; volume:119; firstpage:1; lastpage:23; numberofpages:23; journal:JOURNAL OF HIGH ENERGY PHYSICS; http://hdl.handle.net/11570/2514231Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84873324279 |
| DOI: | 10.1007/JHEP01(2013)119 |
| الإتاحة: | https://doi.org/10.1007/JHEP01Test(2013)119 http://hdl.handle.net/11570/2514231Test |
| رقم الانضمام: | edsbas.868EA740 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1007/JHEP01(2013)119 |
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