Georg Viehhauser: Publications

Hadronic mass moments in inclusive semileptonic B meson decays

Physical Review Letters 87:25 (2001)

Authors:

Abstract:

The first and second moments of the hadronic mass-squared distribution in the B meson semileptonic decay to charm, B → X c ℓ ν, were measured. The measurement of and the heavy quark effective theory expression for this moment were used, in conjunction with similar information on the first moment of the photon energy spectrum in B → s λ. As a result, λ and ∧̄ were determined.

Hadronic mass moments in inclusive semileptonic B meson decays.

Phys Rev Lett 87:25 (2001) 251808

Authors:

D Cronin-Hennessy, AL Lyon, S Roberts, EH Thorndike, TE Coan, V Fadeyev, YS Gao, Y Maravin, I Narsky, R Stroynowski, J Ye, T Wlodek, M Artuso, K Benslama, C Boulahouache, K Bukin, E Dambasuren, G Majumder, R Mountain, T Skwarnicki, S Stone, JC Wang, A Wolf, S Kopp, M Kostin, AH Mahmood, SE Csorna, I Danko, KW McLean, Z Xu, R Godang, G Bonvicini, D Cinabro, M Dubrovin, S McGee, GJ Zhou, A Bornheim, E Lipeles, SP Pappas, A Shapiro, WM Sun, AJ Weinstein, DE Jaffe, R Mahapatra, G Masek, HP Paar, DM Asner, A Eppich, TS Hill, RJ Morrison, RA Briere, GP Chen, T Ferguson, H Vogel, JP Alexander, C Bebek, BE Berger, K Berkelman, F Blanc, V Boisvert, DG Cassel, PS Drell, JE Duboscq, KM Ecklund, R Ehrlich, P Gaidarev, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, L Hsu, CD Jones, J Kandaswamy, DL Kreinick, M Lohner, A Magerkurth, TO Meyer, NB Mistry, E Nordberg, M Palmer, JR Patterson, D Peterson, D Riley, A Romano, H Schwarthoff, JG Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, P Avery, C Prescott, AI Rubiera, H Stoeck, J Yelton, G Brandenburg, A Ershov, DY Kim, R Wilson, T Bergfeld, BI Eisenstein, J Ernst, GE Gladding, GD Gollin, RM Hans, E Johnson, I Karliner, MA Marsh, C Plager, C Sedlack, M Selen, JJ Thaler, J Williams, KW Edwards, AJ Sadoff, R Ammar, A Bean, D Besson, X Zhao, S Anderson, VV Frolov, Y Kubota, SJ Lee, R Poling, A Smith, CJ Stepaniak, J Urheim, S Ahmed, MS Alam, SB Athar, L Jian, L Ling, M Saleem, S Timm, F Wappler, A Anastassov, E Eckhart, KK Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, TK Pedlar, JB Thayer, E von Toerne, MM Zoeller, SJ Richichi, H Severini, P Skubic, A Undrus, V Savinov, S Chen, JW Hinson, J Lee, DH Miller, V Pavlunin, EI Shibata, IP Shipsey, CLEO Collaboration

Abstract:

We have measured the first and second moments of the hadronic mass-squared distribution in B-->X(c)l nu, for P(lepton)>1.5 GeV/c. We find = 0.251+/-0.066 GeV(2), <(M(2)(X)-)(2)> = 0.576+/-0.170 GeV(4), where M macro(D) is the spin-averaged D meson mass. From that first moment and the first moment of the photon energy spectrum in b-->s gamma, we find the heavy quark effective theory parameter lambda(1) (in the modified minimal subtraction renormalization scheme, to order 1/M(3)(B) and beta(0)alpha(2)(s)) to be -0.24+/-0.11 GeV(2). Using these first moments and the B semileptonic width, and assuming parton-hadron duality, we obtain absolute value of V(cb) = 0.0404+/-0.0013.

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K-Shell Photodetachment of Li-: Experiment and Theory

Physical Review Letters American Physical Society (APS) 87:25 (2001) 253002

Authors:

N Berrah, JD Bozek, AA Wills, G Turri, H-L Zhou, ST Manson, G Akerman, B Rude, ND Gibson, CW Walter, L VoKy, A Hibbert, SM Ferguson

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Evidence for the decay D⁰ → Κ⁺π^-π⁺π^-

Physical Review D 64:11 (2001)

Authors:

SA Dytman, V Savinov, S Chen, JW Hinson, J Lee, DH Miller, EI Shibata, IPJ Shipsey, V Pavlunin, D Cronin-Hennessy, AL Lyon, W Park, EH Thorndike, TE Coan, YS Gao, F Liu, Y Maravin, I Narsky, R Stroynowski, J Ye, M Artuso, C Boulahouache, K Bukin, E Dambasuren, G Majumder, R Mountain, T Skwarnicki, S Stone, JC Wang, H Zhao, S Kopp, M Kostin, AH Mahmood, SE Csorna, I Danko, KW McLean, Z Xu, G Bonvicini, D Cinabro, M Dubrovin, S McGee, A Bornheim, E Lipeles, SP Pappas, A Shapiro, WM Sun, AJ Weinstein, R Mahapatra, G Masek, HP Paar, RJ Morrison, HN Nelson, RA Briere, GP Chen, T Ferguson, H Vogel, JP Alexander, C Bebek, K Berkelman, F Blanc, V Boisvert, DG Cassel, PS Drell, JE Duboscq, KM Ecklund, R Ehrlich, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, L Hsu, CD Jones, J Kandaswamy, DL Kreinick, M Lohner, A Magerkurth, H Mahlke-Krüger, TO Meyer, NB Mistry, E Nordberg, M Palmer, JR Patterson, D Peterson, J Pivarski, D Riley, H Schwarthoff, JG Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, M Weinberger, SB Athar, P Avery, C Prescott, H Stoeck, J Yelton, G Brandenburg, A Ershov

Abstract:

We present a search for the "wrong-sign" decay D0 → Κ+π-π+π- using 9 fb-1 of e+e- collisions on and just below the Y(4S) resonance. This decay can occur either through a doubly Cabibbo-suppressed process or through mixing to a D̄0 followed by a Cabibbo-favored process. Our result for the time-integrated wrong-sign rate relative to the decay D0 → Κ-π+π-π+ is (0.0041-0.0011+0.0012(stat)±0.0004(syst))×(1.07 ±0.10)(phase space), which has a statistical significance of 3.9 standard deviations. ©2001 The American Physical Society.

First observation of B̄→D^(*) ρ′^-, ρ′^-→ωπ^-

Physical Review D 64:9 (2001)

Authors:

JP Alexander, C Bebek, BE Berger, K Berkelman, F Blanc, V Boisvert, DG Cassel, PS Drell, JE Duboscq, KM Ecklund, R Ehrlich, P Gaidarev, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, L Hsu, CD Jones, J Kandaswamy, DL Kreinick, M Lohner, A Magerkurth, TO Meyer, NB Mistry, E Nordberg, M Palmer, JR Patterson, D Peterson, D Riley, A Romano, H Schwarthoff, JG Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, P Avery, C Prescott, AI Rubiera, H Stoeck, J Yelton, G Brandenburg, A Ershov, DYJ Kim, R Wilson, T Bergfeld, BI Eisenstein, J Ernst, GE Gladding, GD Gollin, RM Hans, E Johnson, I Karliner, MA Marsh, C Plager, C Sedlack, M Selen, JJ Thaler, J Williams, KW Edwards, AJ Sadoff, R Ammar, A Bean, D Besson, X Zhao, S Anderson, VV Frolov, Y Kubota, SJ Lee, R Poling, A Smith, CJ Stepaniak, J Urheim, S Ahmed, MS Alam, SB Athar, L Jian, L Ling, M Saleem, S Timm, F Wappler, A Anastassov, E Eckhart, KK Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, TK Pedlar, JB Thayer, E Von Toerne, MM Zoeller, SJ Richichi, H Severini, P Skubic, A Undrus, V Savinov

Abstract:

We report on the observation of B̄→D*π+π-π-π 0 decays. The branching ratios for D*+ and D*0 are (1.72±0.14±0.24)% and (1.80±0.24±0.27)%, respectively. Each final state has a a D*ωπ- component, with branching ratios (0.29±0.03±0.04)% and (0.45±0.10±0.07)% for the D*+ and D*0 modes, respectively. We also observe B̄→Dωπ- decays. The branching ratios for D+ and D0 are (0.28±0.05±0.04)% and (0.41±0.07±0.06)%, respectively. A spin parity analysis of the ωπ- system in the Dωπ- final state shows a preference for a wide 1- resonance. A fit to the ωπ- mass spectrum finds a central mass of (1349 ±25-5+10) MeV and width of (547±86-45+46) MeV. We identify this object as the ρ(1450) or the ρ′. ©2001 The American Physical Society.

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Georg Viehhauser

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Hadronic mass moments in inclusive semileptonic B meson decays

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Abstract:

Hadronic mass moments in inclusive semileptonic B meson decays.

Authors:

Abstract:

K-Shell Photodetachment of Li-: Experiment and Theory

Authors:

Evidence for the decay D⁰ → Κ⁺π^-π⁺π^-

Authors:

Abstract:

First observation of B̄→D^(*) ρ′^-, ρ′^-→ωπ^-

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Georg Viehhauser

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Hadronic mass moments in inclusive semileptonic B meson decays

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Hadronic mass moments in inclusive semileptonic B meson decays.

Authors:

Abstract:

K-Shell Photodetachment of Li-: Experiment and Theory

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Evidence for the decay D0 → Κ+π-π+π-

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First observation of B̄→D(*) ρ′-, ρ′-→ωπ-

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Evidence for the decay D⁰ → Κ⁺π^-π⁺π^-

First observation of B̄→D^(*) ρ′^-, ρ′^-→ωπ^-