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Search for the CP violating $K_{S} \rightarrow 3\pi^{0}$ decay with the KLOE detector

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Search for the CP violating $K_{S} \rightarrow 3\pi^{0}$ decay with the KLOE detector

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dc.contributor.author Silarski, Michał [SAP13036814] pl
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 Curciarello, F. pl
dc.contributor.author Czerwiński, Eryk [SAP13037062] pl
dc.contributor.author Danè, E. pl
dc.contributor.author De Leo, V. 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 Heijkenskjold, L. pl
dc.contributor.author Hoistad, B. pl
dc.contributor.author Iafolla, L. pl
dc.contributor.author Jacewicz, M. pl
dc.contributor.author Johansson, T. pl
dc.contributor.author Kacprzak, K. pl
dc.contributor.author Kupsc, 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 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 2015-07-30T10:35:36Z
dc.date.available 2015-07-30T10:35:36Z
dc.date.issued 2013 pl
dc.identifier.issn 1742-6588 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/14292
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 3.0 *
dc.rights.uri http://creativecommons.org/licenses/by/3.0/legalcode *
dc.title Search for the CP violating $K_{S} \rightarrow 3\pi^{0}$ decay 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 new search for the $K_{S}\rightarrow 3\pi ^{0}$ decay performed with the KLOE detector operating at the DAΦNE $\phi$ -factory. The $K_{S}$ mesons were tagged via registration of $K_{L}$ mesons which crossed the drift chamber without decaying and interacted with the KLOE electromagnetic calorimeter. The $K_{S}\rightarrow 3\pi ^{0}$ decay was then searched requiring six prompt photons. To suppress background, originating from fake $K_{S}$ tags and $K_{S}\rightarrow 2\pi ^{0}$ decays with additional two spurious clusters, we have performed a discriminant analysis based on kinematical fit, testing of the signal and background hypotheses and exploiting of the differences in kinematics of the $K_{S}$ decays into $2\pi ^{0}$ and $3\pi ^{0}$. In a sample of about 1.7$\cdot 10^{9} \phi \rightarrow K_{S}K_{L}$ events we have found no candidates in data and simulated background samples. Normalizing to the number of $K_{S}\rightarrow 2\pi^{0}$ events in the same sample, we have set the upper limit on the $K_{S}\rightarrow 3\pi^{0}$ branching ratio BR $\left ( K_{S}\rightarrow 3\pi^{0} \right )< 2.6\cdot 10^{-8}$ at 90% C.L., five times lower than the previous limit. This upper limit can be translated into a limit on the modulus of the $\eta _{000}$ parameter amounting to $\left | \eta _{000} \right |< 0.0088$ at 90% C.L., improving by a factor two the latest direct measurement. pl
dc.description.volume 447 pl
dc.description.publication 0,5 pl
dc.description.conftype international pl
dc.identifier.doi 10.1088/1742-6596/447/1/012028 pl
dc.identifier.eissn 1742-6596 pl
dc.title.journal Journal of Physics. Conference Series pl
dc.title.volume DISCRETE 2012 – Third Symposium on Prospects in the Physics of Discrete Symmetries : 3-7 December 2013, IST Congress Center, Lisbon, Portugal pl
dc.contributor.institution KLOE-2 Collaboration pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype ConferenceProceedings pl
dc.conference DISCRETE 2012 – Third Symposium on Prospects in the Physics of Discrete Symmetries; 2013-12-03; 2013-12-07; Lizbona; Portugalia; indeksowana w Web of Science; indeksowana w Scopus; ; pl
dc.identifier.articleid 012028 pl
dc.rights.original CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / P pl


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Udzielam licencji. Uznanie autorstwa 3.0 Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 3.0