- Main
Initial-state radiation measurement of the e+e-→π+π-π+π- cross section
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- Ratcliff, BN;
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- Snyder, A;
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- Wisniewski, WJ;
- Wittgen, M;
- Wright, DH;
- Wulsin, HW;
- Yarritu, AK;
- Young, CC;
- Ziegler, V;
- Park, W;
- Purohit, MV;
- White, RM;
- Wilson, JR;
- Randle-Conde, A;
- Sekula, SJ;
- Bellis, M;
- Benitez, JF;
- Burchat, PR;
- Miyashita, TS;
- Alam, MS;
- Ernst, JA;
- Gorodeisky, R;
- Guttman, N;
- Peimer, DR;
- Soffer, A;
- Lund, P;
- Spanier, SM;
- Eckmann, R;
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- Schwitters, RF;
- Wray, BC;
- Izen, JM;
- Lou, XC;
- Bianchi, F;
- Gamba, D;
- Lanceri, L;
- Vitale, L;
- Martinez-Vidal, F;
- Oyanguren, A;
- Ahmed, H;
- Albert, J;
- Banerjee, Sw;
- Choi, HHF;
- King, GJ;
- Kowalewski, R;
- Lewczuk, MJ;
- Nugent, IM;
- Roney, JM;
- Sobie, RJ;
- Tasneem, N;
- Gershon, TJ;
- Harrison, PF;
- Latham, TE;
- Puccio, EMT;
- Band, HR;
- Dasu, S;
- Pan, Y;
- Prepost, R;
- Wu, SL
- et al.
Abstract
We study the process e +e -→π +π -π +π -γ, with a photon emitted from the initial-state electron or positron, using 454.3fb -1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260000 signal events. We use these data to extract the nonradiative σ(e +e -→π +π -π +π -) cross section in the energy range from 0.6 to 4.5 GeV. The total uncertainty of the cross section measurement in the peak region is less than 3%, higher in precision than the corresponding results obtained from energy scan data. © 2012 American Physical Society.
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