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Precision measurement of sigma (e(+)e(-) -> pi(+)pi(-)gamma)/sigma(e(+)e(-) ->mu(+)mu(-)gamma) and determination of the pi(+)pi(-) contribution to the muon anomaly with the KLOE detector

Babusci, D. (author)
Badoni, D. (author)
Balwierz-Pytko, I. (author)
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Bencivenni, G. (author)
Bini, C. (author)
Bloise, C. (author)
Bossi, F. (author)
Branchini, P. (author)
Budano, A. (author)
Balkestahl, Li Caldeira (author)
Uppsala universitet,Kärnfysik
Capon, G. (author)
Ceradini, F. (author)
Ciambrone, P. (author)
Curciarello, F. (author)
Czerwinski, E. (author)
Dane, E. (author)
De Leo, V. (author)
De Lucia, E. (author)
De Robertis, G. (author)
De Santis, A. (author)
De Simone, P. (author)
Di Domenico, A. (author)
Di Donato, C. (author)
Domenici, D. (author)
Erriquez, O. (author)
Fanizzi, G. (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, Lena (author)
Uppsala universitet,Kärnfysik
Höistad, Bo (author)
Uppsala universitet,Kärnfysik
Iafolla, L. (author)
Iarocci, E. (author)
Jacewicz, Marek (author)
Uppsala universitet,Högenergifysik
Johansson, Tord (author)
Uppsala universitet,Kärnfysik
Kluge, W. (author)
Kupsc, Andrzej (author)
Uppsala universitet,Kärnfysik
Lee-Franzini, J. (author)
Loddo, F. (author)
Lukin, P. (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)
Mueller, S. (author)
Nguyen, F. (author)
Passeri, A. (author)
Patera, V. (author)
Longhi, I. Prado (author)
Ranieri, A. (author)
Redmer, C. F. (author)
Uppsala universitet,Institutionen för fysik och astronomi
Santangelo, P. (author)
Sarra, I. (author)
Schioppa, M. (author)
Sciascia, B. (author)
Silarski, M. (author)
Taccini, C. (author)
Tortora, L. (author)
Venanzoni, G. (author)
Versaci, R. (author)
Wislicki, W. (author)
Wolke, Magnus (author)
Uppsala universitet,Kärnfysik
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. ; 720:4-5, s. 336-343
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We have measured the ratio cr (e(+)e(-) -> pi(+)pi(-)gamma)/sigma(e(+)e(-) -> mu(+)mu(-)gamma), with the KLOE detector at DA Phi NE for a total integrated luminosity of similar to 240 pb(-1). From this ratio we obtain the cross section sigma (e(+)e(-) -> pi(+)pi(-)gamma). From the cross section we determine the pion form factor vertical bar F-pi vertical bar(2) and the two-pion contribution to the muon anomaly a(mu) for 0.592< M-pi pi < 0.975 GeV, Delta(pi pi) a(mu) = (385.1 +/- 1.1(stat) +/- 2.7(sys+theo)) x 10(-10). This result confirms the current discrepancy between the Standard Model calculation and the experimental measurement of the muon anomaly. (c) 2013 Elsevier B.V. All rights reserved.

Keyword

e(+)e(-) collisions
Initial state radiation
Pion form factor
Muon anomaly

Publication and Content Type

ref (subject category)
art (subject category)

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