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Study of tau decays to six pions and a neutrino.

Phys Rev Lett 86:20 (2001) 4467-4471

Authors:

A Anastassov, JE Duboscq, E Eckhart, KK Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, TK Pedlar, H Schwarthoff, JB Thayer, E von Toerne, MM Zoeller, SJ Richichi, H Severini, P Skubic, A Undrus, S Chen, J Fast, JW Hinson, J Lee, DH Miller, EI Shibata, IP Shipsey, V Pavlunin, D Cronin-Hennessy, AL Lyon, EH Thorndike, CP Jessop, V Savinov, TE Coan, V Fadeyev, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, R Ayad, C Boulahouache, K Bukin, E Dambasuren, S Karamov, G Majumder, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, G Viehhauser, JC Wang, A Wolf, J Wu, S Kopp, AH Mahmood, SE Csorna, I Danko, KW McLean, Z Xu, R Godang, G Bonvicini, D Cinabro, M Dubrovin, S McGee, GJ Zhou, E Lipeles, SP Pappas, M Schmidtler, A Shapiro, WM Sun, AJ Weinstein, F Würthwein, DE Jaffe, G Masek, HP Paar, EM Potter, S Prell, DM Asner, A Eppich, TS Hill, RJ Morrison, RA Briere, GP Chen, WT Ford, A Gritsan, J Roy, JG Smith, JP Alexander, R Baker, C Bebek, BE Berger, K Berkelman, F Blanc, V Boisvert, DG Cassel, PS Drell, KM Ecklund, R Ehrlich, AD Foland, P Gaidarev, RS Galik, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, PI Hopman, L Hsu, CD Jones, DL Kreinick, M Lohner, A Magerkurth, TO Meyer, NB Mistry, E Nordberg, JR Patterson, D Peterson, D Riley, A Romano, JG Thayer, D Urner, B Valant-Spaight, A Warburton, P Avery, C Prescott, AI Rubiera, H Stoeck, J Yelton, G Brandenburg, A Ershov, YS Gao, DY Kim, R Wilson, T Bergfeld, BI Eisenstein, J Ernst, GE Gladding, GD Gollin, RM Hans, E Johnson, I Karliner, MA Marsh, M Palmer, C Plager, C Sedlack, M Selen, JJ Thaler, J Williams, KW Edwards, R Janicek, PM Patel, AJ Sadoff, R Ammar, A Bean, D Besson, X Zhao, S Anderson, VV Frolov, Y Kubota, SJ Lee, R Mahapatra, JJ O'Neill, R Poling, T Riehle, A Smith, CJ Stepaniak, J Urheim, S Ahmed, MS Alam, SB Athar, L Jian, L Ling, M Saleem, S Timm, F Wappler, CLEO Collaboration

Abstract:

The tau decays to six-pion final states have been studied with the CLEO detector at the Cornell Electron Storage Ring. The measured branching fractions are B(tau(-)-->2pi(-)pi(+)3pi(0)nu(tau)) = (2.2+/-0.3+/-0.4)x10(-4) and B(tau(-)-->3pi(-)2pi(+)pi(0)nu(tau)) = (1.7+/-0.2+/-0.2)x10(-4). A search for substructure in these decays shows that they are saturated by intermediate states with eta or omega mesons. We present the first observation of the decay tau(-)-->2pi(-)pi(+)omega(nu)tau and the branching fraction is measured to be (1.2+/-0.2+/-0.1)x10(-4). The measured branching fractions are in good agreement with the isospin expectations but somewhat below the conserved-vector-current predictions.
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The 1997 hard-state outburst of the X-ray transient GS 1354–64/BW Cir

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 323:2 (2001) 517-528

Authors:

C Brocksopp, PG Jonker, RP Fender, PJ Groot, M van der Klis, SJ Tingay
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Theory of pixel lensing towards M31 — I. The density contribution and mass of MACHOs

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 323:1 (2001) 13-33

Authors:

E Kerins, BJ Carr, NW Evans, P Hewett, E Lastennet, Y Le Du, A-L Melchior, SJ Smartt, D Valls-Gabaud
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Hubble Space Telescope-NICMOS Observations of M31’s Metal-Rich Globular Clusters and Their Surrounding Fields. I. Techniques**Based on observations with the NASA/ESA Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy (AURA), Inc., for NASA under contract NAS 5-26555.

The Astronomical Journal American Astronomical Society 121:5 (2001) 2584-2596

Authors:

Andrew W Stephens, Jay A Frogel, Wendy Freedman, Carme Gallart, Pascale Jablonka, Sergio Ortolani, Alvio Renzini, R Michael Rich, Roger Davies
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Hubble Space Telescope-NICMOS Observations of M31’s Metal-Rich Globular Clusters and Their Surrounding Fields. II. Results**Based on observations with the NASA/ESA Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy (AURA), Inc., for NASA under contract NAS 5-26555.

The Astronomical Journal American Astronomical Society 121:5 (2001) 2597-2609

Authors:

Andrew W Stephens, Jay A Frogel, Wendy Freedman, Carme Gallart, Pascale Jablonka, Sergio Ortolani, Alvio Renzini, R Michael Rich, Roger Davies
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