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Measurement of \eta meson production in \gamma \gamma interactions and \Gamma \left ( \eta \rightarrow \gamma \gamma \right ) with the KLOE detector

Measurement of \eta meson production in \gamma \gamma ...

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dc.contributor.author Babusci, D. pl
dc.contributor.author Badoni, D. pl
dc.contributor.author Pytko, Izabela [USOS61605] pl
dc.contributor.author Bencivenni, G. pl
dc.contributor.author Bini, C. pl
dc.contributor.author Bloise, C. pl
dc.contributor.author Bossi, F. pl
dc.contributor.author Branchini, P. pl
dc.contributor.author Budano, A. pl
dc.contributor.author Caldeira Balkeståhl, L. pl
dc.contributor.author Capon, G. pl
dc.contributor.author Ceradini, F. pl
dc.contributor.author Ciambrone, P. pl
dc.contributor.author Czerwiński, Eryk [SAP13037062] pl
dc.contributor.author Danè, E. pl
dc.contributor.author De Lucia, E. pl
dc.contributor.author De Robertis, G. pl
dc.contributor.author De Santis, A. pl
dc.contributor.author Di Domenico, A. pl
dc.contributor.author Di Donato, C. pl
dc.contributor.author Di Salvo, R. pl
dc.contributor.author Domenici, D. pl
dc.contributor.author Erriquez, O. pl
dc.contributor.author Fanizzi, G. pl
dc.contributor.author Fantini, A. pl
dc.contributor.author Felici, G. pl
dc.contributor.author Fiore, S. pl
dc.contributor.author Franzini, P. pl
dc.contributor.author Gauzzi, P. pl
dc.contributor.author Giardina, G. pl
dc.contributor.author Giovannella, S. pl
dc.contributor.author Gonnella, F. pl
dc.contributor.author Graziani, E. pl
dc.contributor.author Happacher, F. pl
dc.contributor.author Heijkenskjöld, L. pl
dc.contributor.author Höistad, B. pl
dc.contributor.author Iafolla, L. pl
dc.contributor.author Jacewicz, M. pl
dc.contributor.author Johansson, T. pl
dc.contributor.author Kupść, A. pl
dc.contributor.author Lee-Franzini, J. pl
dc.contributor.author Leverington, B. pl
dc.contributor.author Loddo, F. pl
dc.contributor.author Loffredo, S. pl
dc.contributor.author Mandaglio, G. pl
dc.contributor.author Martemianov, M. pl
dc.contributor.author Martini, M. pl
dc.contributor.author Mascolo, M. pl
dc.contributor.author Messi, R. pl
dc.contributor.author Miscetti, S. pl
dc.contributor.author Morello, G. pl
dc.contributor.author Moricciani, D. pl
dc.contributor.author Moskal, Paweł [SAP11015350] pl
dc.contributor.author Nguyen, F. pl
dc.contributor.author Passeri, A. pl
dc.contributor.author Patera, V. pl
dc.contributor.author Prado Longhi, I. pl
dc.contributor.author Ranieri, A. pl
dc.contributor.author Redmer, C. F. pl
dc.contributor.author Santangelo, P. pl
dc.contributor.author Sarra, I. pl
dc.contributor.author Schioppa, M. pl
dc.contributor.author Sciascia, B. pl
dc.contributor.author Silarski, Michał [SAP13036814] pl
dc.contributor.author Taccini, C. pl
dc.contributor.author Tortora, L. pl
dc.contributor.author Venanzoni, G. pl
dc.contributor.author Wiślicki, W. pl
dc.contributor.author Wolke, M. pl
dc.contributor.author Zdebik, Jarosław [USOS2045] pl
dc.date.accessioned 2015-05-21T12:18:05Z
dc.date.available 2015-05-21T12:18:05Z
dc.date.issued 2013 pl
dc.identifier.issn 1126-6708 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/7691
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/pl/legalcode *
dc.title Measurement of \eta meson production in \gamma \gamma interactions and \Gamma \left ( \eta \rightarrow \gamma \gamma \right ) with the KLOE detector pl
dc.type JournalArticle pl
dc.description.additional Autorka Izabela Pytko podpisana jako: Izabela Balwierz-Pytko. pl
dc.abstract.en We present a measurement of \eta meson production in photon-photon interactions produced by electron-positron beams colliding with \sqrt{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^{-}\rightarrow e^{+}e^{-}\eta cross section is measured without detecting the out-going electron and positron, selecting the decays \eta \rightarrow \pi ^{+}\pi ^{-}\pi ^{0} and \eta \rightarrow \pi ^{0}\pi ^{0}\pi ^{0}. The most relevant background is due to e^{+}e^{-}\rightarrow \eta \gamma when the monochromatic photon escapes detection. The cross section for this process is measured as \sigma \left ( e^{+} e^{-}\rightarrow \eta \gamma \right ) = \left ( 856\pm 8_{stat}\pm 16_{syst} \right )pb. The combined result for the e^{+}e^{-}\rightarrow e^{+}e^{-}\eta cross section is \sigma \left ( e^{+} e^{-}\rightarrow e^{+}e^{-}\eta \right ) = \left ( 32.72 \pm 1.27_{stat}\pm 0.70_{syst} \right )pb. From this we derive the partial width \Gamma \left ( \eta \rightarrow \gamma \gamma \right )=\left ( 520\pm 20_{stat}\pm 13_{syst} \right ) eV. This is in agreement with the world average and is the most precise measurement to date. pl
dc.subject.en e^{+}e^{-} experiments pl
dc.description.volume 2013 pl
dc.description.number 1 pl
dc.description.publication 1 pl
dc.identifier.doi 10.1007/JHEP01(2013)119 pl
dc.identifier.eissn 1029-8479 pl
dc.title.journal The Journal of High Energy Physics pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.identifier.articleid 119 pl
dc.rights.original CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0; pl
dc.identifier.project ROD UJ / P pl
dc.pbn.affiliation USOS61605:UJ.WFAI; USOS2045:UJ.WFAI; pl
.pointsMNiSW [2013 A]: 40


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Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa