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A new limit on the CP violating decay with the KLOE experiment

2013
journal article
article
10.1016/j.physletb.2013.05.008
Journal
Physics Letters. B
Author
Babusci D.

Badoni D.

Pytko Izabela

Bencivenni G.

Bloise C.
Show more
Volume
723
Number
1-3
Institution
The KLOE-2 Collaboration
Pages
54-60
ISSN
0370-2693
eISSN
1873-2445
Keywords in English

collisions

DANE

KLOE

rare decays

CP

CPT

Remarks

Autorka Izabela Pytko podpisana jako: Izabela Balwierz-Pytko.

Language
English
Journal language
English
Abstract in English

We have carried out a new direct search for the CP violating decay with of collisions collected by the KLOE detector at the -factory DA NE. We have searched for this decay in a sample of about events tagging the by means of the interaction in the calorimeter and requiring six prompt photons. With respect to our previous search, the analysis has been improved by increasing of a factor four the tagged sample and by a more effective background rejection of fake tags and spurious clusters. We find no candidates in data and simulated background samples, while we expect 0.12 standard model events. Normalizing to the number of events in the same sample, we set the upper limit on at 90% C.L., five times lower than the previous limit. We also set the upper limit on the parameter, at 90% C.L., improving by a factor two the latest direct measurement.

Affiliation
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
Scopus© citations
36
cris.lastimport.wos2024-04-10T00:59:31Z
dc.abstract.enWe have carried out a new direct search for the CP violating decay $K_{S}\rightarrow 3\pi ^{0}$ with $1.7 fb^{-1}$ of $e^{+}e^{-}$ collisions collected by the KLOE detector at the $\phi$ -factory DA$\Phi$ NE. We have searched for this decay in a sample of about $5.9 \times 10^{8} K_{S}K_{L}$ events tagging the $K_{S}$ by means of the $K_{L}$ interaction in the calorimeter and requiring six prompt photons. With respect to our previous search, the analysis has been improved by increasing of a factor four the tagged sample and by a more effective background rejection of fake $K_{S}$ tags and spurious clusters. We find no candidates in data and simulated background samples, while we expect 0.12 standard model events. Normalizing to the number of $K_{S}\rightarrow 2\pi ^{0}$ events in the same sample, we set the upper limit on $BR\left ( K_{S}\rightarrow 3\pi^{0} \right )\leqslant 2.6 \times 10^{-8}$ at 90% C.L., five times lower than the previous limit. We also set the upper limit on the $\eta _{000}$ parameter, $\mid \eta _{000}\mid\leqslant 0.0088$ at 90% C.L., improving by a factor two the latest direct measurement.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiegopl
dc.contributor.authorBabusci, D.pl
dc.contributor.authorBadoni, D.pl
dc.contributor.authorPytko, Izabela - 115077 pl
dc.contributor.authorBencivenni, G.pl
dc.contributor.authorBloise, C.pl
dc.contributor.authorBossi, F.pl
dc.contributor.authorBranchini, P.pl
dc.contributor.authorBudano, A.pl
dc.contributor.authorCapon, G.pl
dc.contributor.authorCeradini, F.pl
dc.contributor.authorCurciarello, F.pl
dc.contributor.authorCzerwiński, Eryk - 102850 pl
dc.contributor.authorDane, E.pl
dc.contributor.authorDe Lucia, E.pl
dc.contributor.authorDe Robertis, G.pl
dc.contributor.authorDe Santis, A.pl
dc.contributor.authorDiDomenico, A.pl
dc.contributor.authorDi Donato, C.pl
dc.contributor.authorDi Salvo, R.pl
dc.contributor.authorDomenici, D.pl
dc.contributor.authorFanizzi, G.pl
dc.contributor.authorFantini, A.pl
dc.contributor.authorFelici, G.pl
dc.contributor.authorFiore, S.pl
dc.contributor.authorFranzini, P.pl
dc.contributor.authorGauzzi, P.pl
dc.contributor.authorGiardina, G.pl
dc.contributor.authorGiovannella, S.pl
dc.contributor.authorGraziani, E.pl
dc.contributor.authorHappacher, F.pl
dc.contributor.authorHeijkenskjöld, L.pl
dc.contributor.authorHöistad, B.pl
dc.contributor.authorIafolla, L.pl
dc.contributor.authorJacewicz, M.pl
dc.contributor.authorJohansson, T.pl
dc.contributor.authorKupść, A.pl
dc.contributor.authorLee-Franzini, J.pl
dc.contributor.authorLeverington, B.pl
dc.contributor.authorLoffredo, S.pl
dc.contributor.authorMandaglio, G.pl
dc.contributor.authorMartemianov, M.pl
dc.contributor.authorMascolo, M.pl
dc.contributor.authorMessi, R.pl
dc.contributor.authorMiscetti, S.pl
dc.contributor.authorMorello,G.pl
dc.contributor.authorMoricciahi, D.pl
dc.contributor.authorMoskal, Paweł - 100401 pl
dc.contributor.authorNguyen, F.pl
dc.contributor.authorPasseriu, A.pl
dc.contributor.authorLonghi, I. Pradopl
dc.contributor.authorRanieri, A.pl
dc.contributor.authorRedmer, C. F.pl
dc.contributor.authorSarra, I.pl
dc.contributor.authorSchioppa, M.pl
dc.contributor.authorSciascia, B.pl
dc.contributor.authorTaccini, C.pl
dc.contributor.authorTortora, L.pl
dc.contributor.authorVenanzoni, G.pl
dc.contributor.authorWolke, M.pl
dc.contributor.authorZdebik, Jarosław - 134047 pl
dc.contributor.authorBini, C.pl
dc.contributor.authorCiambrone, P.pl
dc.contributor.authorDe Leo, V.pl
dc.contributor.authorErriquez, O.pl
dc.contributor.authorGonnella, F.pl
dc.contributor.authorKacprzak, K.pl
dc.contributor.authorLoddo, F.pl
dc.contributor.authorMartini, M.pl
dc.contributor.authorPatera, V.pl
dc.contributor.authorSantangelo, P.pl
dc.contributor.authorSilarski, Michał - 103624 pl
dc.contributor.authorWiślicki, Wojciechpl
dc.contributor.authorCaldeira Balkeståhl, L.pl
dc.contributor.institutionThe KLOE-2 Collaborationpl
dc.date.accessioned2015-05-26T10:13:25Z
dc.date.available2015-05-26T10:13:25Z
dc.date.issued2013pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.additionalAutorka Izabela Pytko podpisana jako: Izabela Balwierz-Pytko.
dc.description.admin[AB] Kacprzak, K. 50000139
dc.description.number1-3pl
dc.description.physical54-60pl
dc.description.publication0,5pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume723pl
dc.identifier.doi10.1016/j.physletb.2013.05.008pl
dc.identifier.eissn1873-2445pl
dc.identifier.issn0370-2693pl
dc.identifier.projectROD UJ / Ppl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/8097
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa*
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl*
dc.share.typeotwarte czasopismo
dc.subject.en$e^{+}e^{-}$ collisionspl
dc.subject.enDA$\Phi$NEpl
dc.subject.enKLOEpl
dc.subject.enrare $K_{S}$ decayspl
dc.subject.enCPpl
dc.subject.enCPTpl
dc.subtypeArticlepl
dc.titleA new limit on the CP violating decay $K_{S}\rightarrow 3\pi ^{0}$ with the KLOE experimentpl
dc.title.journalPhysics Letters. Bpl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T00:59:31Z
dc.abstract.enpl
We have carried out a new direct search for the CP violating decay $K_{S}\rightarrow 3\pi ^{0}$ with $1.7 fb^{-1}$ of $e^{+}e^{-}$ collisions collected by the KLOE detector at the $\phi$ -factory DA$\Phi$ NE. We have searched for this decay in a sample of about $5.9 \times 10^{8} K_{S}K_{L}$ events tagging the $K_{S}$ by means of the $K_{L}$ interaction in the calorimeter and requiring six prompt photons. With respect to our previous search, the analysis has been improved by increasing of a factor four the tagged sample and by a more effective background rejection of fake $K_{S}$ tags and spurious clusters. We find no candidates in data and simulated background samples, while we expect 0.12 standard model events. Normalizing to the number of $K_{S}\rightarrow 2\pi ^{0}$ events in the same sample, we set the upper limit on $BR\left ( K_{S}\rightarrow 3\pi^{0} \right )\leqslant 2.6 \times 10^{-8}$ at 90% C.L., five times lower than the previous limit. We also set the upper limit on the $\eta _{000}$ parameter, $\mid \eta _{000}\mid\leqslant 0.0088$ at 90% C.L., improving by a factor two the latest direct measurement.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorpl
Babusci, D.
dc.contributor.authorpl
Badoni, D.
dc.contributor.authorpl
Pytko, Izabela - 115077
dc.contributor.authorpl
Bencivenni, G.
dc.contributor.authorpl
Bloise, C.
dc.contributor.authorpl
Bossi, F.
dc.contributor.authorpl
Branchini, P.
dc.contributor.authorpl
Budano, A.
dc.contributor.authorpl
Capon, G.
dc.contributor.authorpl
Ceradini, F.
dc.contributor.authorpl
Curciarello, F.
dc.contributor.authorpl
Czerwiński, Eryk - 102850
dc.contributor.authorpl
Dane, E.
dc.contributor.authorpl
De Lucia, E.
dc.contributor.authorpl
De Robertis, G.
dc.contributor.authorpl
De Santis, A.
dc.contributor.authorpl
DiDomenico, A.
dc.contributor.authorpl
Di Donato, C.
dc.contributor.authorpl
Di Salvo, R.
dc.contributor.authorpl
Domenici, D.
dc.contributor.authorpl
Fanizzi, G.
dc.contributor.authorpl
Fantini, A.
dc.contributor.authorpl
Felici, G.
dc.contributor.authorpl
Fiore, S.
dc.contributor.authorpl
Franzini, P.
dc.contributor.authorpl
Gauzzi, P.
dc.contributor.authorpl
Giardina, G.
dc.contributor.authorpl
Giovannella, S.
dc.contributor.authorpl
Graziani, E.
dc.contributor.authorpl
Happacher, F.
dc.contributor.authorpl
Heijkenskjöld, L.
dc.contributor.authorpl
Höistad, B.
dc.contributor.authorpl
Iafolla, L.
dc.contributor.authorpl
Jacewicz, M.
dc.contributor.authorpl
Johansson, T.
dc.contributor.authorpl
Kupść, A.
dc.contributor.authorpl
Lee-Franzini, J.
dc.contributor.authorpl
Leverington, B.
dc.contributor.authorpl
Loffredo, S.
dc.contributor.authorpl
Mandaglio, G.
dc.contributor.authorpl
Martemianov, M.
dc.contributor.authorpl
Mascolo, M.
dc.contributor.authorpl
Messi, R.
dc.contributor.authorpl
Miscetti, S.
dc.contributor.authorpl
Morello,G.
dc.contributor.authorpl
Moricciahi, D.
dc.contributor.authorpl
Moskal, Paweł - 100401
dc.contributor.authorpl
Nguyen, F.
dc.contributor.authorpl
Passeriu, A.
dc.contributor.authorpl
Longhi, I. Prado
dc.contributor.authorpl
Ranieri, A.
dc.contributor.authorpl
Redmer, C. F.
dc.contributor.authorpl
Sarra, I.
dc.contributor.authorpl
Schioppa, M.
dc.contributor.authorpl
Sciascia, B.
dc.contributor.authorpl
Taccini, C.
dc.contributor.authorpl
Tortora, L.
dc.contributor.authorpl
Venanzoni, G.
dc.contributor.authorpl
Wolke, M.
dc.contributor.authorpl
Zdebik, Jarosław - 134047
dc.contributor.authorpl
Bini, C.
dc.contributor.authorpl
Ciambrone, P.
dc.contributor.authorpl
De Leo, V.
dc.contributor.authorpl
Erriquez, O.
dc.contributor.authorpl
Gonnella, F.
dc.contributor.authorpl
Kacprzak, K.
dc.contributor.authorpl
Loddo, F.
dc.contributor.authorpl
Martini, M.
dc.contributor.authorpl
Patera, V.
dc.contributor.authorpl
Santangelo, P.
dc.contributor.authorpl
Silarski, Michał - 103624
dc.contributor.authorpl
Wiślicki, Wojciech
dc.contributor.authorpl
Caldeira Balkeståhl, L.
dc.contributor.institutionpl
The KLOE-2 Collaboration
dc.date.accessioned
2015-05-26T10:13:25Z
dc.date.available
2015-05-26T10:13:25Z
dc.date.issuedpl
2013
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.additional
Autorka Izabela Pytko podpisana jako: Izabela Balwierz-Pytko.
dc.description.admin
[AB] Kacprzak, K. 50000139
dc.description.numberpl
1-3
dc.description.physicalpl
54-60
dc.description.publicationpl
0,5
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
723
dc.identifier.doipl
10.1016/j.physletb.2013.05.008
dc.identifier.eissnpl
1873-2445
dc.identifier.issnpl
0370-2693
dc.identifier.projectpl
ROD UJ / P
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/8097
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri*
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subject.enpl
$e^{+}e^{-}$ collisions
dc.subject.enpl
DA$\Phi$NE
dc.subject.enpl
KLOE
dc.subject.enpl
rare $K_{S}$ decays
dc.subject.enpl
CP
dc.subject.enpl
CPT
dc.subtypepl
Article
dc.titlepl
A new limit on the CP violating decay $K_{S}\rightarrow 3\pi ^{0}$ with the KLOE experiment
dc.title.journalpl
Physics Letters. B
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations
Wydział Fizyki, Astronomii i Informatyki Stosowanej
Czerwiński, Eryk
Moskal, Paweł
Silarski, Michał
Zdebik, Jarosław
Pytko, Izabela
No affiliation
Babusci, D.
Badoni, D.
Bencivenni, G.
Bloise, C.
Bossi, F.
Branchini, P.
Budano, A.
Capon, G.
Ceradini, F.
Curciarello, F.
Dane, E.
De Lucia, E.
De Robertis, G.
De Santis, A.
DiDomenico, A.
Di Donato, C.
Di Salvo, R.
Domenici, D.
Fanizzi, G.
Fantini, A.
Felici, G.
Fiore, S.
Franzini, P.
Gauzzi, P.
Giardina, G.
Giovannella, S.
Graziani, E.
Happacher, F.
Heijkenskjöld, L.
Höistad, B.
Iafolla, L.
Jacewicz, M.
Johansson, T.
Kupść, A.
Lee-Franzini, J.
Leverington, B.
Loffredo, S.
Mandaglio, G.
Martemianov, M.
Mascolo, M.
Messi, R.
Miscetti, S.
Morello,G.
Moricciahi, D.
Nguyen, F.
Passeriu, A.
Longhi, I. Prado
Ranieri, A.
Redmer, C. F.
Sarra, I.
Schioppa, M.
Sciascia, B.
Taccini, C.
Tortora, L.
Venanzoni, G.
Wolke, M.
Bini, C.
Ciambrone, P.
De Leo, V.
Erriquez, O.
Gonnella, F.
Kacprzak, K.
Loddo, F.
Martini, M.
Patera, V.
Santangelo, P.
Wiślicki, Wojciech
Caldeira Balkeståhl, L.

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