Lees, JP; Poireau, V; Prencipe, E; Tisserand, V; Garra Tico, J; Grauges, E; Martinelli, M; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Battaglia, M; Brown, DN; Hooberman, B; Kerth, LT; Kolomensky, YG; Lynch, G; Osipenkov, IL; Tanabe, T; Hawkes, CM; Soni, N; Watson, AT; Koch, H; Schroeder, T; Asgeirsson, DJ; Hearty, C; Mattison, TS; McKenna, JA; Barrett, M; Khan, A; Randle-Conde, A; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Onuchin, AP; Serednyakov, SI; Skovpen, YI; Solodov, EP; Todyshev, KY; Yushkov, AN; Bondioli, M; Curry, S; Kirkby, D; Lankford, AJ; Lund, P; Mandelkern, M; Martin, EC; Stoker, DP; Atmacan, H; Gary, JW; Liu, F; Long, O; Vitug, GM; Yasin, Z; Sharma, V; Campagnari, C; Hong, TM; Kovalskyi, D; Richman, JD; Eisner, AM; Heusch, CA; Kroseberg, J; Lockman, WS; Martinez, AJ; Schalk, T; Schumm, BA; Seiden, A; Winstrom, LO; Cheng, CH; Doll, DA; Echenard, B; Hitlin, DG; Ongmongkolkul, P; Porter, FC; Rakitin, AY; Andreassen, R; Dubrovin, MS; Mancinelli, G; Meadows, BT; Sokoloff, MD; Bloom, PC; Ford, WT; Gaz, A

doi:10.1103/PhysRevD.81.052010

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Measurement of the γγ*→ηc transition form factor

2010

Lees, JP;
Poireau, V;
Prencipe, E;
Tisserand, V;
Garra Tico, J;
Grauges, E;
Martinelli, M;
Palano, A;
Pappagallo, M;
Eigen, G;
Stugu, B;
Sun, L;
Battaglia, M;
Brown, DN;
Hooberman, B;
Kerth, LT;
Kolomensky, YG;
Lynch, G;
Osipenkov, IL;
Tanabe, T;
Hawkes, CM;
Soni, N;
Watson, AT;
Koch, H;
Schroeder, T;
Asgeirsson, DJ;
Hearty, C;
Mattison, TS;
McKenna, JA;
Barrett, M;
Khan, A;
Randle-Conde, A;
Blinov, VE;
Buzykaev, AR;
Druzhinin, VP;
Golubev, VB;
Onuchin, AP;
Serednyakov, SI;
Skovpen, YI;
Solodov, EP;
Todyshev, KY;
Yushkov, AN;
Bondioli, M;
Curry, S;
Kirkby, D;
Lankford, AJ;
Lund, P;
Mandelkern, M;
Martin, EC;
Stoker, DP;
Atmacan, H;
Gary, JW;
Liu, F;
Long, O;
Vitug, GM;
Yasin, Z;
Sharma, V;
Campagnari, C;
Hong, TM;
Kovalskyi, D;
Richman, JD;
Eisner, AM;
Heusch, CA;
Kroseberg, J;
Lockman, WS;
Martinez, AJ;
Schalk, T;
Schumm, BA;
Seiden, A;
Winstrom, LO;
Cheng, CH;
Doll, DA;
Echenard, B;
Hitlin, DG;
Ongmongkolkul, P;
Porter, FC;
Rakitin, AY;
Andreassen, R;
Dubrovin, MS;
Mancinelli, G;
Meadows, BT;
Sokoloff, MD;
Bloom, PC;
Ford, WT;
Gaz, A;
Hirschauer, JF;
Nagel, M;
Nauenberg, U;
Smith, JG;
Wagner, SR;
Ayad, R;
Toki, WH;
Feltresi, E;
Hauke, A;
Jasper, H;
Karbach, TM;
Merkel, J;
Petzold, A;
Spaan, B;
Wacker, K
et al.

Published Web Location

https://doi.org/10.1103/PhysRevD.81.052010

Creative Commons 'BY' version 4.0 license

Abstract

We study the reaction e+e-→e+e -ηc, ηc→KSK±π" and obtain ηc mass and width values 2982.2±0.4±1.6MeV/c2 and 31.7±1.2±0.8MeV, respectively. We find Γ(ηc→γ γ)B(ηc→KK̄π)=0.374±0.009±0.031keV, and measure the γγ*→ηc transition form factor in the momentum transfer range from 2 to 50GeV2. The analysis is based on 469fb-1 of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV. © 2010 The American Physical Society.

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Measurement of the γγ*→ηc transition form factor

Published Web Location