Study of the Dalitz decay phi -&gt; eta e(+)e(-) with the KLOE detector

doi:10.1016/j.physletb.2015.01.011

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Babusci, D. (author)

Study of the Dalitz decay phi -> eta e(+)e(-) with the KLOE detector

E-article/E-chapterEnglish2015

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2015

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LIBRIS-ID:20193086
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-251429uri
urn:nbn:se:uu:diva-251429urn
10.1016/j.physletb.2015.01.011doi

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Language:English

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deldatabas:Eplk_tEPLK

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Published
gratis
We have studied the vector to pseudoscalar conversion decay phi -> eta e(+)e(-), with.. eta -> pi(0)pi(0)pi(0), with the KLOE detector at DA phi NE. The data set of 1.7 fb(-1) of e(+)e(-) collisions at root s similar to M-phi contains a clear conversion decay signal of similar to 31,000 events from which we measured a value of BR(phi -> eta e(+)e-) = (1.075 +/- 0.007 +/- 0.038) x 10(-4). The same sample is used to determine the transition form factor by a fit to the e(+)e(-) invariant mass spectrum, obtaining b(phi eta)=( 1.28 +/- 0.10(-0.08)(+0.09)) GeV-2, that improves by a factor of five the precision of the previous measurement and is in good agreement with VMD expectations.

Subject headings and genre

Natural Sciences hsv
Physical Sciences hsv
Naturvetenskap hsv
Fysik hsv
e(+)e(-) collisions
Conversion decay
Transition form factor

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

Balwierz-Pytko, I. (author)
Bencivenni, G. (author)
Bloise, C. (author)
Bossi, F. (author)
Branchini, P. (author)
Budano, A. (author)
Balkeståhl, Li Caldeira (author)
Ceradini, F. (author)
Ciambrone, P. (author)
Curciarello, F. (author)
Czerwinski, E. (author)
Dane, E. (author)
De Leo, V. (author)
De Luciah, E. (author)
De Robertis, G. (author)
De Santis, A. (author)
De Simone, P. (author)
Di Cicco, A. (author)
Di Domenico, A. (author)
Di Salvo, R. (author)
Domenici, D. (author)
Erriqueza, O. (author)
Fanizzia, G. (author)
Fantinio, A. (author)
Felici, G. (author)
Fiore, S. (author)
Franzini, P. (author)
Gajos, A. (author)
Gauzzi, P. (author)
Giardina, G. (author)
Giovannella, S. (author)
Graziani, E. (author)
Happacher, F. (author)
Heijkenskjöld, Lena (author)
Höistad, Bo (author)
Johansson, Tord (author)
Kaminska, D. (author)
Krzemien, W. (author)
Kupsc, Andrzej (author)
Lee-Franzini, J. (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)
Moricciani, D. (author)
Moskal, P. (author)
Palladino, A. (author)
Passeri, A. (author)
Patera, V. (author)
Longhi, I. Prado (author)
Ranieri, A. (author)
Santangelo, P. (author)
Sarra, I. (author)
Schioppa, M. (author)
Sciascia, B. (author)
Silarski, M. (author)
Tortora, L. (author)
Venanzoni, G. (author)
Wislicki, W. (author)
Wolke, Magnus (author)
Uppsala universitetTeknisk-naturvetenskapliga vetenskapsområdet (publisher)

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In:VärdpublikationPhysics Letters B742, 1-60370-2693

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By the author/editor: Babusci, D.; Balwierz-Pytko, ...; Bencivenni, G.; Bloise, C.; Bossi, F.; Branchini, P.; show more...; Budano, A.; Balkeståhl, Li C ...; Ceradini, F.; Ciambrone, P.; Curciarello, F.; Czerwinski, E.; Dane, E.; De Leo, V.; De Luciah, E.; De Robertis, G.; De Santis, A.; De Simone, P.; Di Cicco, A.; Di Domenico, A.; Di Salvo, R.; Domenici, D.; Erriqueza, O.; Fanizzia, G.; Fantinio, A.; Felici, G.; Fiore, S.; Franzini, P.; Gajos, A.; Gauzzi, P.; Giardina, G.; Giovannella, S.; Graziani, E.; Happacher, F.; Heijkenskjöld, L ...; Höistad, Bo; Johansson, Tord; Kaminska, D.; Krzemien, W.; Kupsc, Andrzej; Lee-Franzini, J.; Loddo, F.; Loffredo, S.; Mandaglio, G.; Martemianov, M.; Martini, M.; Mascolo, M.; Messi, R.; Miscetti, S.; Morello, G.; Moricciani, D.; Moskal, P.; Palladino, A.; Passeri, A.; Patera, V.; Longhi, I. Prado; Ranieri, A.; Santangelo, P.; Sarra, I.; Schioppa, M.; Sciascia, B.; Silarski, M.; Tortora, L.; Venanzoni, G.; Wislicki, W.; Wolke, Magnus; show less...

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