Georg Viehhauser: Publications

Search for the decays B⁰→D^()+D^()-

Physical Review Letters 79:5 (1997) 799-803

Authors:

DM Asner, DW Bliss, WS Brower, G Masek, HP Paar, V Sharma, J Gronberg, R Kutschke, DJ Lange, S Menary, RJ Morrison, HN Nelson, TK Nelson, C Qiao, JD Richman, D Roberts, A Ryd, MS Witherell, R Balest, BH Behrens, K Cho, WT Ford, H Park, P Rankin, J Roy, JG Smith, JP Alexander, C Bebek, BE Berger, K Berkelman, K Bloom, DG Cassel, HA Cho, DM Coffman, DS Crowcroft, M Dickson, PS Drell, KM Ecklund, R Ehrlich, R Elia, AD Foland, P Gaidarev, B Gittelman, SW Gray, DL Hartill, BK Heltsley, PI Hopman, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, T Lee, Y Liu, GS Ludwig, J Masui, J Mevissen, NB Mistry, CR Ng, E Nordberg, M Ogg, JR Patterson, D Peterson, D Riley, A Soffer, C Ward, M Athanas, P Avery, CD Jones, M Lohner, C Prescott, S Yang, J Yelton, J Zheng, G Brandenburg, RA Briere, YS Gao, DYJ Kim, R Wilson, H Yamamoto, TE Browder, F Li, Y Li, JL Rodriguez, T Bergfeld, BI Eisenstein, J Ernst, GE Gladding, GD Gollin, RM Hans, E Johnson, I Karliner, MA Marsh, M Palmer, M Selen, JJ Thaler, KW Edwards, A Bellerive, R Janicek, DB Mac Farlane, KW Mc Lean

Abstract:

Using the CLEO-II data set we have searched for the decays B0→D(*)+D(*)-. We observe one candidate signal event for the decay B0→D*+D*- with an expected background of 0.022±0.011 events. This yield corresponds to a branching fraction of B(B0→D*+D*-)=[5.3+7.1-3.7(stat)±1.0(syst)]×10-4 and an upper limit of B(B0→D*+D*-)<2.2×10-3 at the 90% C.L. We see no significant excess of signal above the expected background level in the other modes, and we calculate the 90% C.L. upper limits on the branching fractions to be B(B0→D*±D*∓)<1.8×10-3 and B(B0→D+D-)<1.2×10-3. © 1997 The American Physical Society.

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Study of gluon versus quark fragmentation in [Formula presented] and [Formula presented] events at [Formula presented]=10 GeV

Physical Review D - Particles, Fields, Gravitation and Cosmology 56:1 (1997) 17-22

Authors:

MS Alam, SB Athar, Z Ling, AH Mahmood, H Severini, S Timm, F Wappler, A Anastassov, S Blinov, JE Duboscq, D Fujino, R Fulton, KK Gan, T Hart, K Honscheid, H Kagan, R Kass, J Lee, MB Spencer, M Sung, A Undrus, R Wanke, A Wolf, MM Zoeller, B Nemati, SJ Richichi, WR Ross, P Skubic, M Wood, M Bishai, J Fast, E Gerndt, JW Hinson, N Menon, DH Miller, EI Shibata, IPJ Shipsey, M Yurko, L Gibbons, SD Johnson, Y Kwon, S Roberts, EH Thorndike, CP Jessop, K Lingel, H Marsiske, ML Perl, SF Schaffner, D Ugolini, R Wang, X Zhou, TE Coan, V Fadeyev, I Korolkov, Y Maravin, I Narsky, V Shelkov, J Staeck, R Stroynowski, I Volobouev, J Ye, M Artuso, A Efimov, F Frasconi, M Gao, M Goldberg, D He, S Kopp, GC Moneti, R Mountain, Y Mukhin, S Schuh, T Skwarnicki, S Stone, G Viehhauser, X Xing, J Bartelt, SE Csorna, V Jain, S Marka, A Freyberger, D Gibaut, R Godang, K Kinoshita, IC Lai, P Pomianowski, S Schrenk, G Bonvicini, D Cinabro, R Greene, LP Perera, B Barish, M Chadha, S Chan, G Eigen, JS Miller, CO Grady, M Schmidtler, J Urheim, AJ Weinstein

Abstract:

Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we determine the ratio [Formula presented] for the mean charged multiplicity observed in [Formula presented] events, [Formula presented], to the mean charged multiplicity observed in [Formula presented] events, [Formula presented]. We find [Formula presented] [Formula presented] for jet-jet masses less than 7 GeV. © 1997 The American Physical Society.

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Study of the decay τ⁻ → 2π⁻π⁺3π⁰vT

Physical Review Letters 79:20 (1997) 3814-3818

Authors:

S Anderson, Y Kubota, SJ Lee, JJ O’neill, S Patton, R Poling, T Riehle, V Savinov, A Smith, MS Alam, SB Athar, Z Ling, AH Mahmood, H Severini, S Timm, F Wappler, A Anastassov, JE Duboscq, D Fujino, KK Gan, T Hart, D Homoelle, K Honscheid, H Kagan, R Kass, J Lee, MB Spencer, M Sung, A Undrus, R Wanke, A Wolf, MM Zoeller, B Nemati, SJ Richichi, WR Ross, P Skubic, M Bishai, J Fast, JW Hinson, N Menon, DH Miller, EI Shibata, IPJ Shipsey, M Yurko, L Gibbons, S Glenn, SD Johnson, Y Kwon, S Roberts, EH Thorndike, CP Jessop, K Lingel, H Marsiske, ML Perl, D Ugolini, R Wang, X Zhou, TE Coan, V Fadeyev, I Korolkov, Y Maravin, I Narsky, V Shelkov, J Staeck, R Stroynowski, I Volobouev, J Ye, M Artuso, A Efimov, M Goldberg, D He, S Kopp, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, G Viehhauser, X Xing, J Bartelt, SE Csorna, V Jain, KW McLean, S Marka, R Godang, K Kinoshita, IC Lai, P Pomianowski, S Schrenk, G Bonvicini, D Cinabro, R Greene, LP Perera, GJ Zhou, B Barish, M Chadha, S Chan, G Eigen, JS Miller, C O’grady

Abstract:

We use the CLEO detector at the Cornell e+e− storage ring, CESR, to search for the two-photon production of the glueball candidate fj(2220) in its decay to K8K8. We present a restrictive upper limit on the product of the two-photon partial width and the K8K8 branching fraction, (γγγBK8K8)fj(2220). We use this limit to calculate a lower limit on the stickiness, which is a measure of the two-gluon coupling relative to the two-photon coupling. This limit on stickiness indicates that the fj(2220) has substantial glueball content. © 1997 The American Physical Society.

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[Formula presented] helicity from [Formula presented] energy correlations

Physical Review D - Particles, Fields, Gravitation and Cosmology 55:11 (1997) 7291-7295

Authors:

TE Coan, V Fadeyev, I Korolkov, Y Maravin, I Narsky, V Shelkov, J Staeck, R Stroynowski, I Volobouev, J Ye, M Artuso, A Efimov, F Frasconi, M Gao, M Goldberg, D He, S Kopp, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, G Viehhauser, X Xing, J Bartelt, SE Csorna, V Jain, S Marka, A Freyberger, R Godang, K Kinoshita, IC Lai, P Pomianowski, S Schrenk, G Bonvicini, D Cinabro, R Greene, LP Perera, GJ Zhou, B Barish, M Chadha, S Chan, G Eigen, JS Miller, C O’Grady, M Schmidtler, J Urheim, AJ Weinstein, F Würthwein, DM Asner, DW Bliss, WS Brower, G Masek, HP Paar, V Sharma, J Gronberg, TS Hill, R Kutschke, DJ Lange, S Menary, RJ Morrison, HN Nelson, TK Nelson, C Qiao, JD Richman, D Roberts, A Ryd, MS Witherell, R Balest, BH Behrens, K Cho, WT Ford, H Park, P Rankin, J Roy, JG Smith, JP Alexander, C Bebek, BE Berger, K Berkelman, K Bloom, DG Cassel, HA Cho, DM Coffman, DS Crowcroft, M Dickson, PS Drell, KM Ecklund, R Ehrlich, R Elia, AD Foland, P Gaidarev, RS Galik, B Gittelman, SW Gray, DL Hartill, BK Heltsley, PI Hopman, J Kandaswamy, N Katayama

Abstract:

We report a measurement of the magnitude of the [Formula presented] helicity from [Formula presented]-pair events taken with the CLEO detector at the CESR electron-positron storage ring. Events in which each [Formula presented] undergoes the decay [Formula presented], with [Formula presented] a charged pion or kaon, are analyzed for energy correlations between the daughter hadrons, yielding [Formula presented] = [Formula presented], with the first error statistical and the second systematic. © 1997 The American Physical Society.

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Λ[Formula presented] production in two-photon interactions

Physical Review D - Particles, Fields, Gravitation and Cosmology 56:5 (1997) R2485-R2489

Authors:

S Anderson, Y Kubota, M Lattery, JJ O’Neill, S Patton, R Poling, T Riehle, V Savinov, A Smith, MS Alam, SB Athar, Z Ling, AH Mahmood, H Severini, S Timm, F Wappler, A Anastassov, S Blinov, JE Duboscq, D Fujino, R Fulton, KK Gan, T Hart, K Honscheid, H Kagan, R Kass, J Lee, MB Spencer, M Sung, A Undrus, R Wanke, A Wolf, MM Zoeller, B Nemati, SJ Richichi, WR Ross, P Skubic, M Wood, M Bishai, J Fast, E Gerndt, JW Hinson, N Menon, DH Miller, EI Shibata, IPJ Shipsey, M Yurko, L Gibbons, SD Johnson, Y Kwon, S Roberts, EH Thorndike, CP Jessop, K Lingel, H Marsiske, ML Perl, SF Schaffner, D Ugolini, R Wang, X Zhou, TE Coan, V Fadeyev, I Korolkov, Y Maravin, I Narsky, V Shelkov, J Staeck, R Stroynowski, I Volobouev, J Ye, M Artuso, A Efimov, F Frasconi, M Gao, M Goldberg, D He, S Kopp, GC Moneti, R Mountain, Y Mukhin, S Schuh, T Skwarnicki, S Stone, G Viehhauser, X Xing, J Bartelt, SE Csorna, V Jain, S Marka, A Freyberger, D Gibaut, R Godang, K Kinoshita, IC Lai, P Pomianowski, S Schrenk, G Bonvicini, D Cinabro, R Greene, LP Perera

Abstract:

Using the CLEO detector at the Cornell [Formula presented] storage ring CESR we study the two-photon production of Λ[Formula presented], making the first observation of γγ→Λ[Formula presented]. We present the cross section for γγ→Λ[Formula presented] as a function of the [Formula presented] center of mass energy and compare it to that predicted by the quark-diquark model. © 1997 The American Physical Society.

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Georg Viehhauser

Sub department

Search for the decays B⁰→D^()+D^()-

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Study of gluon versus quark fragmentation in [Formula presented] and [Formula presented] events at [Formula presented]=10 GeV

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Study of the decay τ⁻ → 2π⁻π⁺3π⁰vT

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[Formula presented] helicity from [Formula presented] energy correlations

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Λ[Formula presented] production in two-photon interactions

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Georg Viehhauser

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Search for the decays B0→D(*)+D(*)-

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Study of gluon versus quark fragmentation in [Formula presented] and [Formula presented] events at [Formula presented]=10 GeV

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Study of the decay τ− → 2π−π+3π0vT

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[Formula presented] helicity from [Formula presented] energy correlations

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Λ[Formula presented] production in two-photon interactions

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Search for the decays B⁰→D^()+D^()-

Study of the decay τ⁻ → 2π⁻π⁺3π⁰vT