A new limit on the CP violating decay K-S -> 3 pi(0) with the KLOE experiment

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Babusci, D. (author)

A new limit on the CP violating decay K-S -> 3 pi(0) with the KLOE experiment

Article/chapterEnglish2013

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Elsevier BV,2013
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LIBRIS-ID:oai:DiVA.org:uu-204113
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-204113URI
https://doi.org/10.1016/j.physletb.2013.05.008DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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We have carried out a new direct search for the CP violating decay K-S -> 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 x 10(8) KSKL 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 -> 2 pi(0) events in the same sample, we set the upper limit on BR(K-S -> 3 pi(0)) <= 2.6 x 10(-8) at 90% C.L., five times lower than the previous limit. We also set the upper limit on the eta(000) parameter, vertical bar eta(000)vertical bar <= 0.0088 at 90% C.L., improving by a factor two the latest direct measurement. (c) 2013 Elsevier B.V. All rights reserved.

Subject headings and genre

e(+)e(-) collisions
DA Phi NE
KLOE
Rare K-S decays
CP
CPT

Added entries (persons, corporate bodies, meetings, titles ...)

Badoni, D. (author)
Balwierz-Pytko, I. (author)
Bencivenni, G. (author)
Bini, C. (author)
Bloise, C. (author)
Bossi, F. (author)
Branchini, P. (author)
Budano, A. (author)
Balkestahl, Li CaldeiraUppsala universitet,Kärnfysik(Swepub:uu)liaca435 (author)
Capon, G. (author)
Ceradini, F. (author)
Ciambrone, R. (author)
Curciarello, F. (author)
Czerwiriski, E. (author)
Dane, E. (author)
De Leo, V. (author)
De Lucia, E. (author)
De Robertis, G. (author)
De Santis, A. (author)
Di Domenico, A. (author)
Di Donato, C. (author)
Di Salvo, R. (author)
Domenici, D. (author)
Erriquez, O. (author)
Fanizzi, G. (author)
Fantini, A. (author)
Felici, G. (author)
Fiore, S. (author)
Franzini, P. (author)
Gauzzi, P. (author)
Giardina, G. (author)
Giovannella, S. (author)
Gonnella, F. (author)
Graziani, E. (author)
Happacher, F. (author)
Heijkenskjöld, LenaUppsala universitet,Kärnfysik(Swepub:uu)lenhe965 (author)
Höistad, BoUppsala universitet,Kärnfysik(Swepub:uu)bohoista (author)
Iafolla, L. (author)
Jacewicz, MarekUppsala universitet,Högenergifysik(Swepub:uu)mja03009 (author)
Johansson, TordUppsala universitet,Kärnfysik(Swepub:uu)tordjoha (author)
Kacprzak, K. (author)
Kupsc, AndrzejUppsala universitet,Kärnfysik(Swepub:uu)andrkups (author)
Lee-Franzini, J. (author)
Leverington, B. (author)
Loddo, F. (author)
Loffredo, S. (author)
Mandaglio, G. (author)
Martemianov, M. (author)
Martini, M. (author)
Mascolo, M. (author)
Messi, R. (author)
Miscetti, S. (author)
Morello, G. (author)
Moricciahi, D. (author)
Moskal, P. (author)
Nguyen, F. (author)
Passeriu, A. (author)
Patera, V. (author)
Longhi, I. Prado (author)
Ranieri, A. (author)
Redmer, C. F. (author)
Santangelo, P. (author)
Sarra, I. (author)
Schioppa, M. (author)
Sciascia, B. (author)
Silarski, M. (author)
Taccini, C. (author)
Tortora, L. (author)
Venanzoni, G. (author)
Wislicki, W. (author)
Wolke, MagnusUppsala universitet,Kärnfysik(Swepub:uu)mawol031 (author)
Zdebik, J. (author)
Uppsala universitetKärnfysik (creator_code:org_t)

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In:Physics Letters B: Elsevier BV723:1-3, s. 54-600370-26931873-2445

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By the author/editor: Babusci, D.; Badoni, D.; Balwierz-Pytko, ...; Bencivenni, G.; Bini, C.; Bloise, C.; show more...; Bossi, F.; Branchini, P.; Budano, A.; Balkestahl, Li C ...; Capon, G.; Ceradini, F.; Ciambrone, R.; Curciarello, F.; Czerwiriski, E.; Dane, E.; De Leo, V.; De Lucia, E.; De Robertis, G.; De Santis, A.; Di Domenico, A.; Di Donato, C.; Di Salvo, R.; Domenici, D.; Erriquez, O.; Fanizzi, G.; Fantini, A.; Felici, G.; Fiore, S.; Franzini, P.; Gauzzi, P.; Giardina, G.; Giovannella, S.; Gonnella, F.; Graziani, E.; Happacher, F.; Heijkenskjöld, L ...; Höistad, Bo; Iafolla, L.; Jacewicz, Marek; Johansson, Tord; Kacprzak, K.; Kupsc, Andrzej; Lee-Franzini, J.; Leverington, B.; Loddo, F.; Loffredo, S.; Mandaglio, G.; Martemianov, M.; Martini, M.; Mascolo, M.; Messi, R.; Miscetti, S.; Morello, G.; Moricciahi, D.; Moskal, P.; Nguyen, F.; Passeriu, A.; Patera, V.; Longhi, I. Prado; Ranieri, A.; Redmer, C. F.; Santangelo, P.; Sarra, I.; Schioppa, M.; Sciascia, B.; Silarski, M.; Taccini, C.; Tortora, L.; Venanzoni, G.; Wislicki, W.; Wolke, Magnus; Zdebik, J.; show less...

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