1. Precision measurement of $\sigma(e^+e^-\rightarrow\pi^+\pi^-\gamma)/\sigma(e^+e^-\rightarrow \mu^+\mu^-\gamma)$ and determination of the $\pi^+\pi^-$ contribution to the muon anomaly with the KLOE detector
- Author
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KLOE, Collaborations, KLOE-2, Babusci, D., Badoni, D., Balwierz-Pytko, I., Bencivenni, G., Bini, C., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkestahl, L. Caldeira, Capon, G., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwinski, E., Dane', E., De Leo, V., De Lucia, E., De Robertis, G., De Santis, A., De Simone, P., Di Domenico, A., Di Donato, C., Domenici, D., Erriquez, O., Fanizzi, G., Felici, G., Fiore, S., Franzini, P., Gauzzi, P., Giardina, G., Giovannella, S., Gonnella, F., Graziani, E., Happacher, F., Heijkenskjold, L., Hoistad, B., Iafolla, L., Iarocci, E., Jacewicz, M., Johansson, T., Kluge, W., Kupsc, A., Lee-Franzini, J., Loddo, F., Lukin, P., Mandaglio, G., Martemianov, M., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Muller, S., Nguyen, F., Passeri, 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., Versaci, R., Wislicki, W., Wolke, M., and Zdebik, J.
- Subjects
High Energy Physics - Experiment ,High Energy Physics - Phenomenology - Abstract
We have measured the ratio $\sigma(e^+e^-\rightarrow\pi^+\pi^-\gamma)/\sigma(e^+e^-\rightarrow \mu^+\mu^-\gamma)$, with the KLOE detector at DA$\Phi$NE for a total integrated luminosity of $\sim$ 240 pb$^{-1}$. From this ratio we obtain the cross section $\sigma(e^+e^-\rightarrow\pi^+\pi^-)$. From the cross section we determine the pion form factor $|F_\pi|^2$ and the two-pion contribution to the muon anomaly $a_\mu$ for $0.592
- Published
- 2012
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