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Measurement of the spectral function for the τ- →k-KSντ decay

  • Author(s): Lees, JP;
  • Poireau, V;
  • Tisserand, V;
  • Grauges, E;
  • Palano, A;
  • Eigen, G;
  • Brown, DN;
  • Kolomensky, YG;
  • Fritsch, M;
  • Koch, H;
  • Schroeder, T;
  • Hearty, C;
  • Mattison, TS;
  • McKenna, JA;
  • So, RY;
  • Blinov, VE;
  • Buzykaev, AR;
  • Druzhinin, VP;
  • Golubev, VB;
  • Kozyrev, EA;
  • Kravchenko, EA;
  • Onuchin, AP;
  • Serednyakov, SI;
  • Skovpen, YI;
  • Solodov, EP;
  • Todyshev, KY;
  • Lankford, AJ;
  • Gary, JW;
  • Long, O;
  • Eisner, AM;
  • Lockman, WS;
  • Panduro Vazquez, W;
  • Chao, DS;
  • Cheng, CH;
  • Echenard, B;
  • Flood, KT;
  • Hitlin, DG;
  • Kim, J;
  • Li, Y;
  • Miyashita, TS;
  • Ongmongkolkul, P;
  • Porter, FC;
  • Röhrken, M;
  • Huard, Z;
  • Meadows, BT;
  • Pushpawela, BG;
  • Sokoloff, MD;
  • Sun, L;
  • Smith, JG;
  • Wagner, SR;
  • Bernard, D;
  • Verderi, M;
  • Bettoni, D;
  • Bozzi, C;
  • Calabrese, R;
  • Cibinetto, G;
  • Fioravanti, E;
  • Garzia, I;
  • Luppi, E;
  • Santoro, V;
  • Calcaterra, A;
  • De Sangro, R;
  • Finocchiaro, G;
  • Martellotti, S;
  • Patteri, P;
  • Peruzzi, IM;
  • Piccolo, M;
  • Rotondo, M;
  • Zallo, A;
  • Passaggio, S;
  • Patrignani, C;
  • Lacker, HM;
  • Bhuyan, B;
  • Mallik, U;
  • Chen, C;
  • Cochran, J;
  • Prell, S;
  • Gritsan, AV;
  • Arnaud, N;
  • Davier, M;
  • Le Diberder, F;
  • Lutz, AM;
  • Wormser, G;
  • Lange, DJ;
  • Wright, DM;
  • Coleman, JP;
  • Gabathuler, E;
  • Hutchcroft, DE;
  • Payne, DJ;
  • Touramanis, C;
  • Bevan, AJ;
  • Di Lodovico, F;
  • Sacco, R;
  • Cowan, G;
  • Banerjee, S;
  • Brown, DN;
  • Davis, CL;
  • Denig, AG;
  • Gradl, W;
  • Griessinger, K
  • et al.
Abstract

The decay τ-→K-KSντ has been studied using 430×106 e+e-→τ+τ- events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the K-KS system has been measured and the spectral function has been obtained. The measured branching fraction B(τ-→K-KSντ)=(0.739±0.011(stat)±0.020(syst))×10-3 is found to be in agreement with earlier measurements.

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