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. |
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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. |
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dc.contributor.author |
Di Donato, C. |
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dc.contributor.author |
Di Salvo, R. |
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dc.contributor.author |
Domenici, D. |
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dc.contributor.author |
Erriquez, O. |
pl |
dc.contributor.author |
Fanizzi, G. |
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dc.contributor.author |
Fantini, A. |
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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. |
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dc.contributor.author |
Giovannella, S. |
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dc.contributor.author |
Gonnella, F. |
pl |
dc.contributor.author |
Graziani, E. |
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dc.contributor.author |
Happacher, F. |
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dc.contributor.author |
Heijkenskjold, L. |
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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 |