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New results on the reaction e+e---> micro+ micro- at sqrt s =29 GeV.

Phys Rev D Part Fields 31:9 (1985) 2352-2355

Authors:

M Derrick, E Fernandez, R Fries, L Hyman, P Kooijman, JS Loos, B Musgrave, LE Price, J Schlereth, K Sugano, JM Weiss, DE Wood, S Ahlen, G Baranko, P Baringer, D Blockus, B Brabson, M Daigo, GE Forden, SW Gray, J Guillaud, C Jung, H Neal, H Ogren, DR Rust, M Valdata-Nappi, C Akerlof, J Chapman, D Errede, N Harnew, P Kesten, S Kooijman, DI Meyer, D Nitz, D Rubin, AA Seidl, R Thun, T Trinko, M Willutzky, I Beltrami, R DeBonte, KK Gan, D Koltick, FJ Loeffler, U Mallik, RL McIlwain, DH Miller, CR Ng, PP Ong, LK Rangan, EI Shibata, R Stevens, RJ Wilson, B Cork, L Keller, J Va'vra
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Observation of tau -lepton decay to five charged particles.

Phys Rev Lett 54:16 (1985) 1775-1778

Authors:

I Beltrami, BG Bylsma, R DeBonte, KK Gan, D Koltick, FJ Loeffler, EH Low, RL McIlwain, DH Miller, CR Ng, PP Ong, LK Rangan, EI Shibata, RJ Wilson, M Derrick, E Fernandez, R Fries, L Hyman, P Kooijman, JS Loos, B Musgrave, LE Price, J Schlereth, K Sugano, JM Weiss, DE Wood, G Baranko, P Baringer, D Blockus, B Brabson, GE Forden, SW Gray, C Jung, H Neal, H Ogren, DR Rust, M Valdata-Nappi, C Akerlof, G Bonvicini, J Chapman, D Errede, N Harnew, P Kesten, S Kooijman, DI Meyer, D Nitz, D Rubin, AA Seidl, R Thun, T Trinko, W Willutzky, B Cork, L Keller, J Va'Vra
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Measurement of the reaction e+e- → τ+τ- at √s = 29 GeV

Physics Letters B 153:1-2 (1985) 116-120

Authors:

KK Gan, I Beltrami, BG Bylsma, R Debonte, D Koltick, FJ Loeffler, EH Low, RL McIlwain, DH Miller, CR Ng, PP Ong, LK Rangan, EI Shibata, RJ Wilson, M Derrick, E Fernandez, R Fries, L Hyman, P Kooijman, JS Loos, B Musgrave, LE Price, J Schlereth, K Sugano, JM Weiss, DE Wood, G Baranko, P Baringer, D Blockus, B Brabson, GE Forden, SW Gray, C Jung, H Neal, H Ogren, DR Rust, M Valdata-Nappi, C Akerlof, G Bonvicini, J Chapman, D Errede, N Harnew, P Kesten, S Kooijman, DI Meyer, D Nitz, D Rubin, AA Seidl, R Thun, T Trinko, M Willutzky, B Cork, L Keller, J Va'vra

Abstract:

The reaction e+e- → τ+τ- has been measured using the high resolution spectrometer at PEP. The angular distribution shows a forward-backward asymmetry of -(6.1±2.3±0.5)%, corresponding to an axial-vector coupling if gaτgae = 0.28 ±0.11± 0.03, in good agreement with the standard model of electroweak interactions. The measured cross section yields ifRττ = 1.10± 0.03±0.04, consistent with QED and giving QED cutoff parameters of Λ+>92 GeV and Λ->246 GeV at 95% C.L. © 1985.
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New results on the reaction e+e-→μ+μ- at s =29 GeV

Physical Review D 31:9 (1985) 2352-2355

Authors:

M Derrick, E Fernandez, R Fries, L Hyman, P Kooijman, JS Loos, B Musgrave, LE Price, J Schlereth, K Sugano, JM Weiss, DE Wood, S Ahlen, G Baranko, P Baringer, D Blockus, B Brabson, M Daigo, GE Forden, SW Gray, JP Guillaud, C Jung, H Neal, H Ogren, DR Rust, M Valdata-Nappi, C Akerlof, J Chapman, D Errede, N Harnew, P Kesten, S Kooijman, DI Meyer, D Nitz, D Rubin, AA Seidl, R Thun, T Trinko, M Willutzky, I Beltrami, R Debonte, KK Gan, D Koltick, FJ Loeffler, U Mallik, RL McIlwain, DH Miller, CR Ng, PP Ong, LK Rangan, EI Shibata, R Stevens, RJ Wilson, B Cork, L Keller, J Va'Vra

Abstract:

We have measured the process e+e-→μ+μ- at s =29 GeV using the High Resolution Spectrometer at SLAC PEP. The forward-backward charge asymmetry is Aμμ=-(4.9±1.5±0.5)% based on 5057 events. A subsample of 3488 μ+μ- events in the angular range cosθ<0.55 gives a cross-section ratio of Rμμ=0.990±0.017±0.030. The resulting couplings of the weak neutral current are gaegaμ=0.208±0.064± 0.021 and gvegvμ=0.027 ±0.051±0.089. The QED cutoff parameters are Λ+>170 GeV and Λ->146 GeV at 95% C.L. © 1985 The American Physical Society.
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Study of quark fragmentation in e+e- annihilation at 29 GeV: Global jet parameters and single-particle distributions.

Phys Rev D Part Fields 31:1 (1985) 1-16

Authors:

D Bender, M Derrick, E Fernandez, R Fries, G Gieraltowski, L Hyman, K Jaeger, R Klem, P Kooijman, JS Loos, F LoPinto, B Musgrave, LE Price, J Schlereth, P Schreiner, R Singer, K Sugano, T Trinko, M Valdata-Nappi, C Ward, JM Weiss, S Ahlen, G Baranko, P Baringer, D Blockus, B Brabson, M Daigo, S Ems, GE Forden, SW Gray, J Guillaud, C Jung, H Neal, H Ogren, D Rust, P Smith, C Akerlof, J Chapman, D Errede, N Harnew, P Kesten, S Kooijman, DI Meyer, D Nitz, D Rubin, AA Seidl, R Thun, M Willutzky, I Beltrami, R DeBonte, KK Gan, D Koltick, F Loeffler, U Mallik, R McIlwain, DH Miller, CR Ng, PP Ong, LK Rangan, EI Shibata, R Stevens, RJ Wilson, DE Wood, B Cork
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