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A new limit on the CP violating decay K-S -> 3 pi(0) with the KLOE experiment
- Babusci, D. (author)
- Badoni, D. (author)
- Balwierz-Pytko, I. (author)
- show more...
- Bencivenni, G. (author)
- Bini, C. (author)
- Bloise, C. (author)
- Bossi, F. (author)
- Branchini, P. (author)
- Budano, A. (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)
- Iafolla, L. (author)
- Kacprzak, K. (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)
- Zdebik, J. (author)
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- (creator_code:org_t)
- Elsevier BV, 2013
- 2013
- English.
- In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 723:1-3, s. 54-60
- Journal article (peer-reviewed)
Abstract
Subject headings
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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.
Keyword
- e(+)e(-) collisions
- DA Phi NE
- KLOE
- Rare K-S decays
- CP
- CPT
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
- Babusci, D.
- Badoni, D.
- Balwierz-Pytko, ...
- Bencivenni, G.
- Bini, C.
- Bloise, C.
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- 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.
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- Articles in the publication
- Physics Letters ...
- By the university
- Uppsala University
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