Aubert, B; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; Robbe, P; Tisserand, V; Palano, A; Pompili, A; Chen, GP; Chen, JC; Qi, ND; Rong, G; Wang, P; Zhu, YS; Eigen, G; Reinertsen, PL; Stugu, B; Abrams, GS; Borgland, AW; Breon, AB; Brown, DN; Button-Shafer, J; Cahn, RN; Clark, AR; Gill, MS; Gritsan, AV; Groysman, Y; Jacobsen, RG; Kadel, RW; Kadyk, J; Kerth, LT; Kolomensky, YG; Kral, JF; LeClerc, C; Levi, ME; Liu, T; Lynch, G; Oddone, PJ; Perazzo, A; Pripstein, M; Roe, NA; Romosan, A; Ronan, MT; Shelkov, VG; Telnov, AV; Wenzel, WA; Bright-Thomas, PG; Harrison, TJ; Hawkes, CM; Knowles, DJ; O'Neale, SW; Penny, RC; Watson, AT; Watson, NK; Deppermann, T; Goetzen, K; Koch, H; Kunze, M; Lewandowski, B; Peters, K; Schmuecker, H; Steinke, M; Andress, JC; Barlow, NR; Bhimji, W; Chevalier, N; Clark, PJ; Cottingham, WN; de Groot, N; Dyce, N; Foster, B; McFall, JD; Wallom, D; Wilson, FF; Abe, K; Hearty, C; Mattison, TS; McKenna, JA; Thiessen, D; Jolly, S; McKemey, AK; Tinslay, J; Blinov, VE

doi:10.1103/PhysRevD.65.031101

Download PDF

Measurement of the branching fractions for Ψ(2S)→e ⁺e^- and Ψ(2S)→μ^+-

2002

Aubert, B;
Boutigny, D;
Gaillard, JM;
Hicheur, A;
Karyotakis, Y;
Lees, JP;
Robbe, P;
Tisserand, V;
Palano, A;
Pompili, A;
Chen, GP;
Chen, JC;
Qi, ND;
Rong, G;
Wang, P;
Zhu, YS;
Eigen, G;
Reinertsen, PL;
Stugu, B;
Abrams, GS;
Borgland, AW;
Breon, AB;
Brown, DN;
Button-Shafer, J;
Cahn, RN;
Clark, AR;
Gill, MS;
Gritsan, AV;
Groysman, Y;
Jacobsen, RG;
Kadel, RW;
Kadyk, J;
Kerth, LT;
Kolomensky, YG;
Kral, JF;
LeClerc, C;
Levi, ME;
Liu, T;
Lynch, G;
Oddone, PJ;
Perazzo, A;
Pripstein, M;
Roe, NA;
Romosan, A;
Ronan, MT;
Shelkov, VG;
Telnov, AV;
Wenzel, WA;
Bright-Thomas, PG;
Harrison, TJ;
Hawkes, CM;
Knowles, DJ;
O'Neale, SW;
Penny, RC;
Watson, AT;
Watson, NK;
Deppermann, T;
Goetzen, K;
Koch, H;
Kunze, M;
Lewandowski, B;
Peters, K;
Schmuecker, H;
Steinke, M;
Andress, JC;
Barlow, NR;
Bhimji, W;
Chevalier, N;
Clark, PJ;
Cottingham, WN;
de Groot, N;
Dyce, N;
Foster, B;
McFall, JD;
Wallom, D;
Wilson, FF;
Abe, K;
Hearty, C;
Mattison, TS;
McKenna, JA;
Thiessen, D;
Jolly, S;
McKemey, AK;
Tinslay, J;
Blinov, VE;
Bukin, AD;
Bukin, DA;
Buzykaev, AR;
Golubev, VB;
Ivanchenko, VN;
Korol, AA;
Kravchenko, EA;
Onuchin, AP;
Salnikov, AA;
Serednyakov, SI;
Skovpen, YI;
Telnov, VI;
Yushkov, AN;
Best, D;
Lankford, AJ
et al.

Published Web Location

https://doi.org/10.1103/PhysRevD.65.031101

Creative Commons 'BY' version 4.0 license

Abstract

We measure the branching fractions of the Ψ(2S) meson to the leptonic final states e+e- and μ+μ- relative to that for Ψ(2S)→J/Ψπ_. The method uses Ψ(2S) mesons produced in the decay of B mesons at the Y(45) resonance in a data sample collected with the BABAR detector at the Stanford Linear Accelerator Center. Using previous measurements for the Ψ(2S) →J/Ψπ+π- branching fraction, we determine the e+e- and π+π- branching fractions to be 0.0078±0.0009±0.0008 and 0.0067±0. 0008±0.0007, respectively. © 2001 The American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content

For improved accessibility of PDF content, download the file to your device.

UC Berkeley

Measurement of the branching fractions for Ψ(2S)→e +e- and Ψ(2S)→μ+-

Published Web Location

Measurement of the branching fractions for Ψ(2S)→e ⁺e^- and Ψ(2S)→μ^+-