The three precision measurements of the cross section σ(e + e − → π + π − ) using initial state radiation by the KLOE collaboration provide an important input for the prediction of the hadronic contribution to the anomalous magnetic moment of the muon. These measurements are correlated for both statistical and systematic uncertainties and, therefore, the simultaneous use of these measurements requires covariance matrices that fully describe the correlations. We present the construction of these covariance matrices and use them to determine a combined KLOE measurement for σ(e + e − → π + π − ). We find, from this combination, a two-pion contribution to the muon magnetic anomaly in the energy range 0.10 < s < 0.95 GeV 2 of aμπ+π−=(489.8±1.7stat±4.8sys)×10−10. Data vectors and covariance matrices are available at http://www.lnf.infn.it/kloe/ppg/ppg_2017/ppg_2017.html.

Combination of KLOE σ (e + e − → π + π − ) measurements and determination of aμ π+π− in the energy range 0.10 < s < 0.95 GeV 2 / Anastasi, A.; Babusci, D.; Berlowski, M.; Bloise, C.; Bossi, F.; Branchini, P.; Budano, A.; Balkeståhl, L. Caldeira; Cao, B.; Ceradini, F.; Ciambrone, P.; Curciarello, F.; Czerwinski, E.; D’Agostini, G.; Danè, E.; De Leo, V.; De Lucia, E.; De Santis, A.; De Simone, P.; Di Cicco, A.; Di Domenico, A.; Domenici, D.; D’Uffizi, A.; Fantini, A.; Fantini, G.; Fermani, P.; Fiore, S.; Gajos, A.; Gauzzi, P.; Giovannella, S.; Graziani, E.; Ivanov, V. L.; Johansson, T.; Kang, X.; Kisielewska-Kaminska, D.; Kozyrev, E. A.; Krzemien, W.; Kupsc, A.; Loffredo, S.; Lukin, P. A.; Mandaglio, G.; Martini, M.; Messi, R.; Miscetti, S.; Morello, G.; Moricciani, D.; Moskal, P.; Passeri, A.; Patera, V.; del Rio, E. Perez; Raha, N.; Santangelo, P.; Schioppa, M.; Selce, A.; Silarski, M.; Sirghi, F.; Solodov, E. P.; Tortora, L.; Venanzoni, G.; Wislicki, W.; Wolke, M.; Keshavarzi, A.; Müller, S. E.; Teubner, T.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2018:3(2018). [10.1007/JHEP03(2018)173]

Combination of KLOE σ (e + e − → π + π − ) measurements and determination of aμ π+π− in the energy range 0.10 < s < 0.95 GeV 2

D’Agostini, G.;Di Domenico, A.;Fantini, G.;Fermani, P.;Gauzzi, P.;Kang, X.;Patera, V.;
2018

Abstract

The three precision measurements of the cross section σ(e + e − → π + π − ) using initial state radiation by the KLOE collaboration provide an important input for the prediction of the hadronic contribution to the anomalous magnetic moment of the muon. These measurements are correlated for both statistical and systematic uncertainties and, therefore, the simultaneous use of these measurements requires covariance matrices that fully describe the correlations. We present the construction of these covariance matrices and use them to determine a combined KLOE measurement for σ(e + e − → π + π − ). We find, from this combination, a two-pion contribution to the muon magnetic anomaly in the energy range 0.10 < s < 0.95 GeV 2 of aμπ+π−=(489.8±1.7stat±4.8sys)×10−10. Data vectors and covariance matrices are available at http://www.lnf.infn.it/kloe/ppg/ppg_2017/ppg_2017.html.
2018
e+-e- Experiments; Nuclear and High Energy Physics
01 Pubblicazione su rivista::01a Articolo in rivista
Combination of KLOE σ (e + e − → π + π − ) measurements and determination of aμ π+π− in the energy range 0.10 < s < 0.95 GeV 2 / Anastasi, A.; Babusci, D.; Berlowski, M.; Bloise, C.; Bossi, F.; Branchini, P.; Budano, A.; Balkeståhl, L. Caldeira; Cao, B.; Ceradini, F.; Ciambrone, P.; Curciarello, F.; Czerwinski, E.; D’Agostini, G.; Danè, E.; De Leo, V.; De Lucia, E.; De Santis, A.; De Simone, P.; Di Cicco, A.; Di Domenico, A.; Domenici, D.; D’Uffizi, A.; Fantini, A.; Fantini, G.; Fermani, P.; Fiore, S.; Gajos, A.; Gauzzi, P.; Giovannella, S.; Graziani, E.; Ivanov, V. L.; Johansson, T.; Kang, X.; Kisielewska-Kaminska, D.; Kozyrev, E. A.; Krzemien, W.; Kupsc, A.; Loffredo, S.; Lukin, P. A.; Mandaglio, G.; Martini, M.; Messi, R.; Miscetti, S.; Morello, G.; Moricciani, D.; Moskal, P.; Passeri, A.; Patera, V.; del Rio, E. Perez; Raha, N.; Santangelo, P.; Schioppa, M.; Selce, A.; Silarski, M.; Sirghi, F.; Solodov, E. P.; Tortora, L.; Venanzoni, G.; Wislicki, W.; Wolke, M.; Keshavarzi, A.; Müller, S. E.; Teubner, T.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2018:3(2018). [10.1007/JHEP03(2018)173]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1267030
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