Search CORE

Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 Decaying to D_s^+ pi^0 and Confirmation of the D_sJ^ (2317) State

Author: Adam N.E. (N. E.)
Alexander J.P. (J. P.)
Anderson S. (S.)
Arms K. (K.)
Artuso M. (M.)
Athar S.B. (S. B.)
Avery P. (P.)
Berkelman K. (K.)
Besson D. (D.)
Blusk S. (S.)
Boisvert V. (V.)
Bonvicini G. (G.)
Bornheim A. (A.)
Boulahouache C. (C.)
Breva-Newell L. (L.)
Briere R.A. (R. A.)
Cassel D.G. (D. G.)
Chen G.P. (G. P.)
Cinabro D. (D.)
Coan T.E. (T. E.)
Cronin-Hennessy D. (D.)
Csorna S.E. (S. E.)
Dambasuren E. (E.)
Danko I. (I.)
Dorjkhaidav O. (O.)
Duboscq J.E. (J. E.)
Dubrovin M. (M.)
Dytman S.A. (S. A.)
Eckhart E. (E.)
Ecklund K.M. (K. M.)
Edwards K.W. (K. W.)
Ehrlich R. (R.)
Eisenstein B.I. (B. I.)
Ferguson T. (T.)
Frolov V.V. (V. V.)
Galik R.S. (R. S.)
Gan K.K. (K. K.)
Gao Y.S. (Y. S.)
Gibbons L. (L.)
Gittelman B. (B.)
Gollin G.D. (G. D.)
Gong D.T. (D. T.)
Gray S.W. (S. W.)
Gwon C. (C.)
Hartill D.L. (D. L.)
Heltsley B.K. (B. K.)
Hinson J.W. (J. W.)
Hsu L. (L.)
Huang G.S. (G. S.)
Jones C.D. (C. D.)
Kandaswamy J. (J.)
Karliner I. (I.)
Kreinick D.L. (D. L.)
Kubota Y. (Y.)
Lee J. (J.)
Li S.Z. (S. Z.)
Lipeles E. (E.)
Liu F. (F.)
Lowrey N. (N.)
Magerkurth A. (A.)
Mahlke-Krüger H. (H.)
Mahmood A.H. (A. H.)
McGee S. (S.)
Metreveli Z. (Z.)
Meyer T.O. (T. O.)
Miller D.H. (D. H.)
Mistry N.B. (N. B.)
Mountain R. (R.)
Mueller J.A. (J. A.)
Muramatsu H. (H.)
Nam S. (S.)
Nandakumar R. (R.)
Pappas S.P. (S. P.)
Park C.S. (C. S.)
Park W. (W.)
Patterson J.R. (J. R.)
Pavlunin V. (V.)
Pedlar T.K. (T. K.)
Peterson D. (D.)
Pivarski J. (J.)
Plager C. (C.)
Poling R. (R.)
Potlia V. (V.)
Richichi S.J. (S. J.)
Riley D. (D.)
Sadoff A.J. (A. J.)
Sanghi B. (B.)
Savinov V. (V.)
Schwarthoff H. (H.)
Sedlack C. (C.)
Selen M. (M.)
Seth K.K. (K. K.)
Severini H. (H.)
Shapiro A. (A.)
Shepherd M.R. (M. R.)
Shibata E.I. (E. I.)
Shipsey I.P.J. (I. P.J.)
Skubic P. (P.)
Skwarnicki T. (T.)
Smith A. (A.)
Stepaniak C.J. (C. J.)
Stoeck H. (H.)
Stone S. (S.)
Stroynowski R. (R.)
Sun W.M. (W. M.)
Tatishvili G. (G.)
Thaler J.J. (J. J.)
Thayer J.B. (J. B.)
Thayer J.G. (J. G.)
Thorndike E.H. (E. H.)
Tomaradze A. (A.)
Urheim J. (J.)
Urner D. (D.)
Vogel H. (H.)
von Toerne E. (E.)
Wang J.C. (J. C.)
Warburton A. (A.)
Watkins M.E. (M. E.)
Weinberger M. (M.)
Weinstein A.J. (A. J.)
Wilksen T. (T.)
Williams J. (J.)
Yelton J. (J.)
Zweber P. (P.)
Publication venue: 'American Physical Society (APS)'
Publication date: 01/01/2003
Field of study

Using 13.5 inverse fb of e+e- annihilation data collected with the CLEO II detector we have observed a narrow resonance in the Ds*+pi0 final state, with a mass near 2.46 GeV. The search for such a state was motivated by the recent discovery by the BaBar Collaboration of a narrow state at 2.32 GeV, the DsJ*(2317)+ that decays to Ds+pi0. Reconstructing the Ds+pi0 and Ds*+pi0 final states in CLEO data, we observe peaks in both of the corresponding reconstructed mass difference distributions, dM(Dspi0)=M(Dspi0)-M(Ds) and dM(Ds*pi0)=M(Ds*pi0)-M(Ds*), both of them at values near 350 MeV. We interpret these peaks as signatures of two distinct states, the DsJ*(2317)+ plus a new state, designated as the DsJ(2463)+. Because of the similar dM values, each of these states represents a source of background for the other if photons are lost, ignored or added. A quantitative accounting of these reflections confirms that both states exist. We have measured the mean mass differences = 350.0 +/- 1.2 [stat] +/- 1.0 [syst] MeV for the DsJ*(2317) state, and = 351.2 +/- 1.7 [stat] +/- 1.0 [syst] MeV for the new DsJ(2463)+ state. We have also searched, but find no evidence, for decays of the two states via the channels Ds*+gamma, Ds+gamma, and Ds+pi+pi-. The observations of the two states at 2.32 and 2.46 GeV, in the Ds+pi0 and Ds*+pi0 decay channels respectively, are consistent with their interpretations as (c anti-strange) mesons with orbital angular momentum L=1, and spin-parities of 0+ and 1+.Comment: 16 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS, version to be published in Physical Review D; minor modifications and fixes to typographical errors, plus an added section on production properties. The main results are unchanged; they supersede those reported in hep-ex/030501

Measurement of the Charge Asymmetry in $B\to K^* (892)^{\pm}\pi^{\mp}$

Author: Adam N.E. (N. E.)
Ahmed S. (S.)
Alam M.S. (M. S.)
Alexander J.P. (J. P.)
Anderson S. (S.)
Arms K. (K.)
Artuso M. (M.)
Athar S.B. (S. B.)
Avery P. (P.)
Berkelman K. (K.)
Besson D. (D.)
Blusk S. (S.)
Boisvert V. (V.)
Bonvicini G. (G.)
Bornheim A. (A.)
Boulahouache C. (C.)
Breva-Newell L. (L.)
Briere R.A. (R. A.)
Cassel D.G. (D. G.)
Chen G.P. (G. P.)
Cinabro D. (D.)
Coan T.E. (T. E.)
Cronin-Hennessy D. (D.)
Csorna S.E. (S. E.)
Dambasuren E. (E.)
Danko I. (I.)
Dorjkhaidav O. (O.)
Duboscq J.E. (J. E.)
Dubrovin M. (M.)
Dytman S.A. (S. A.)
Eckhart E. (E.)
Ecklund K.M. (K. M.)
Edwards K.W. (Kenneth W.)
Ehrlich R. (R.)
Eisenstein B.I. (B. I.)
Ernst J. (J.)
Ferguson T. (T.)
Frolov V.V. (V. V.)
Galik R.S. (R. S.)
Gan K.K. (K. K.)
Gao Y.S. (Y. S.)
Gibbons L. (L.)
Gittelman B. (B.)
Gollin G.D. (G. D.)
Gong D.T. (D. T.)
Gray S.W. (S. W.)
Gwon C. (C.)
Hartill D.L. (D. L.)
Heltsley B.K. (B. K.)
Hinson J.W. (J. W.)
Honscheid K. (K.)
Hsu L. (L.)
Huang G.S. (G. S.)
Jian L. (L.)
Jones C.D. (C. D.)
Kagan H. (H.)
Kandaswamy J. (J.)
Karliner I. (I.)
Kass R. (R.)
Kreinick D.L. (D. L.)
Kubota Y. (Y.)
Lee J. (J.)
Li S.Z. (S. Z.)
Lipeles E. (E.)
Liu F. (F.)
Lowrey N. (N.)
Magerkurth A. (A.)
Mahlke-Krüger H. (H.)
Mahmood A.H. (A. H.)
McGee S. (S.)
Metreveli Z. (Z.)
Meyer T.O. (T. O.)
Miller D.H. (D. H.)
Mistry N.B. (N. B.)
Mountain R. (R.)
Mueller J.A. (J. A.)
Muramatsu H. (H.)
Nam S. (S.)
Nandakumar R. (R.)
Pappas S.P. (S. P.)
Park C.S. (C. S.)
Park W. (W.)
Patterson J.R. (J. R.)
Pavlunin V. (V.)
Pedlar T.K. (T. K.)
Peterson D. (D.)
Pivarski J. (J.)
Plager C. (C.)
Poling R. (R.)
Potlia V. (V.)
Richichi S.J. (S. J.)
Riley D. (D.)
Sadoff A.J. (A. J.)
Saleem M. (M.)
Sanghi B. (B.)
Savinov V. (V.)
Schwarthoff H. (H.)
Sedlack C. (C.)
Selen M. (M.)
Seth K.K. (K. K.)
Severini H. (H.)
Shapiro A. (A.)
Shepherd M.R. (M. R.)
Shibata E.I. (E. I.)
Shipsey I.P.J. (I. P.J.)
Skubic P. (P.)
Skwarnicki T. (T.)
Smith A. (A.)
Stepaniak C.J. (C. J.)
Stoeck H. (H.)
Stone S. (S.)
Stroynowski R. (R.)
Sun W.M. (W. M.)
Tatishvili G. (G.)
Thaler J.J. (J. J.)
Thayer J.B. (J. B.)
Thayer J.G. (J. G.)
Thorndike E.H. (E. H.)
Tomaradze A. (A.)
Urheim J. (J.)
Urner D. (D.)
Vogel H. (H.)
von Toerne E. (E.)
Wang J.C. (J. C.)
Wappler F. (F.)
Warburton A. (A.)
Watkins M.E. (M. E.)
Weinberger M. (M.)
Weinstein A.J. (A. J.)
Wilksen T. (T.)
Williams J. (J.)
Yelton J. (J.)
Zweber P. (P.)
Publication venue: 'American Physical Society (APS)'
Publication date: 01/01/2003
Field of study

We report on a search for a CP-violating asymmetry in the charmless hadronic decay B -> K*(892)+- pi-+, using 9.12 fb^-1 of integrated luminosity produced at \sqrt{s}=10.58 GeV and collected with the CLEO detector. We find A_{CP}(B -> K*(892)+- pi-+) = 0.26+0.33-0.34(stat.)+0.10-0.08(syst.), giving an allowed interval of [-0.31,0.78] at the 90% confidence level.Comment: 7 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS, submitted to PR

Study of the q^2-Dependence of B --> pi ell nu and B --> rho(omega)ell nu Decay and Extraction of |V_ub|

Author: Adam N.E. (N. E.)
Ahmed S. (S.)
Alam M.S. (M. S.)
Alexander J.P. (J. P.)
Anderson S. (S.)
Arms K. (K.)
Artuso M. (M.)
Athar S.B. (S. B.)
Avery P. (P.)
Benslama K. (K.)
Berkelman K. (K.)
Besson D. (D.)
Blusk S. (S.)
Boisvert V. (V.)
Bonvicini G. (G.)
Bornheim A. (A.)
Boulahouache C. (C.)
Breva-Newell L. (L.)
Briere R.A. (R. A.)
Cassel D.G. (D. G.)
Chen G.P. (G. P.)
Cinabro D. (D.)
Coan T.E. (T. E.)
Cronin-Hennessy D. (D.)
Csorna S.E. (S. E.)
Dambasuren E. (E.)
Danko I. (I.)
Dorjkhaidav O. (O.)
Duboscq J.E. (J. E.)
Dubrovin M. (M.)
Dytman S.A. (S. A.)
Eckhart E. (E.)
Ecklund K.M. (K. M.)
Edwards K.W. (Kenneth W.)
Ehrlich R. (R.)
Eisenstein B.I. (B. I.)
Ernst J. (J.)
Ferguson T. (T.)
Frolov V.V. (V. V.)
Galik R.S. (R. S.)
Gan K.K. (K. K.)
Gao Y.S. (Y. S.)
Gibbons L. (L.)
Gittelman B. (B.)
Gollin G.D. (G. D.)
Gong D.T. (D. T.)
Gray S.W. (S. W.)
Gwon C. (C.)
Hartill D.L. (D. L.)
Heltsley B.K. (B. K.)
Hinson J.W. (J. W.)
Honscheid K. (K.)
Hsu L. (L.)
Hufnagel D. (D.)
Jian L. (L.)
Jones C.D. (C. D.)
Kagan H. (H.)
Kandaswamy J. (J.)
Karliner I. (I.)
Kass R. (R.)
Kreinick D.L. (D. L.)
Kubota Y. (Y.)
Lee J. (J.)
Li S.Z. (S. Z.)
Lipeles E. (E.)
Liu F. (F.)
Lowrey N. (N.)
Lyon A.L. (A. L.)
Magerkurth A. (A.)
Mahlke-Krüger H. (H.)
Mahmood A.H. (A. H.)
Maravin Y. (Y.)
McGee S. (S.)
Metreveli Z. (Z.)
Meyer T.O. (T. O.)
Miller D.H. (D. H.)
Mistry N.B. (N. B.)
Mountain R. (R.)
Mueller J.A. (J. A.)
Muramatsu H. (H.)
Nam S. (S.)
Nandakumar R. (R.)
Pappas S.P. (S. P.)
Park C.S. (C. S.)
Park W. (W.)
Patterson J.R. (J. R.)
Pavlunin V. (V.)
Pedlar T.K. (T. K.)
Peterson D. (D.)
Pivarski J. (J.)
Plager C. (C.)
Poling R. (R.)
Potlia V. (V.)
Richichi S.J. (S. J.)
Riley D. (D.)
Sadoff A.J. (A. J.)
Saleem M. (M.)
Sanghi B. (B.)
Savinov V. (V.)
Schwarthoff H. (H.)
Sedlack C. (C.)
Selen M. (M.)
Seth K.K. (K. K.)
Severini H. (H.)
Shapiro A. (A.)
Shepherd M.R. (M. R.)
Shibata E.I. (E. I.)
Shipsey I.P.J. (I. P.J.)
Skubic P. (P.)
Skwarnicki T. (T.)
Smith A. (A.)
Stepaniak C.J. (C. J.)
Stoeck H. (H.)
Stone S. (S.)
Stroynowski R. (R.)
Sun W.M. (W. M.)
Tatishvili G. (G.)
Thaler J.J. (J. J.)
Thayer J.B. (J. B.)
Thayer J.G. (J. G.)
Thorndike E.H. (E. H.)
Tomaradze A. (A.)
Urheim J. (J.)
Urner D. (D.)
Vogel H. (H.)
von Toerne E. (E.)
Wang J.C. (J. C.)
Wappler F. (F.)
Warburton A. (A.)
Weinberger M. (M.)
Weinstein A.J. (A. J.)
Wilksen T. (T.)
Williams J. (J.)
Yelton J. (J.)
Zhao X. (X.)
Zoeller M.M. (M. M.)
Zweber P. (P.)
Publication venue: 'American Physical Society (APS)'
Publication date: 01/01/2003
Field of study

We report on determinations of |Vub| resulting from studies of the branching fraction and q^2 distributions in exclusive semileptonic B decays that proceed via the b->u transition. Our data set consists of the 9.7x10^6 BBbar meson pairs collected at the Y(4S) resonance with the CLEO II detector. We measure B(B0 -> pi- l+ nu) = (1.33 +- 0.18 +- 0.11 +- 0.01 +- 0.07)x10^{-4} and B(B0 -> rho- l+ nu) = (2.17 +- 0.34 +0.47/-0.54 +- 0.41 +- 0.01)x10^{-4}, where the errors are statistical, experimental systematic, systematic due to residual form-factor uncertainties in the signal, and systematic due to residual form-factor uncertainties in the cross-feed modes, respectively. We also find B(B+ -> eta l+ nu) = (0.84 +- 0.31 +- 0.16 +- 0.09)x10^{-4}, consistent with what is expected from the B -> pi l nu mode and quark model symmetries. We extract |Vub| using Light-Cone Sum Rules (LCSR) for 0<= q^2<16 GeV^2 and Lattice QCD (LQCD) for 16 GeV^2 <= q^2 < q^2_max. Combining both intervals yields |Vub| = (3.24 +- 0.22 +- 0.13 +0.55/-0.39 +- 0.09)x10^{-3}$ for pi l nu, and |Vub| = (3.00 +- 0.21 +0.29/-0.35 +0.49/-0.38 +-0.28)x10^{-3} for rho l nu, where the errors are statistical, experimental systematic, theoretical, and signal form-factor shape, respectively. Our combined value from both decay modes is |Vub| = (3.17 +- 0.17 +0.16/-0.17 +0.53/-0.39 +-0.03)x10^{-3}.Comment: 45 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS, submitted to PR

Search for CP Violation in D^0--> K_S^0 pi^+pi^-

Author: Adam N.E. (N. E.)
Ahmed S. (S.)
Alam M.S. (M. S.)
Alexander J.P. (J. P.)
Anderson S. (S.)
Arms K. (K.)
Artuso M. (M.)
Asner D.M. (D. M.)
Athar S.B. (S. B.)
Avery P. (P.)
Benslama K. (K.)
Berkelman K. (K.)
Besson D. (D.)
Blusk S. (S.)
Boisvert V. (V.)
Bonvicini G. (G.)
Bornheim A. (A.)
Boulahouache C. (C.)
Breva-Newell L. (L.)
Briere R.A. (R. A.)
Cassel D.G. (D. G.)
Cawlfield C. (C.)
Chen G.P. (G. P.)
Cinabro D. (D.)
Coan T.E. (T. E.)
Cronin-Hennessy D. (D.)
Csorna S.E. (S. E.)
Dambasuren E. (E.)
Danko I. (I.)
Dorjkhaidav O. (O.)
Duboscq J.E. (J. E.)
Dubrovin M. (M.)
Dytman S.A. (S. A.)
Eckhart E. (E.)
Ecklund K.M. (K. M.)
Edwards K.W. (Kenneth W.)
Ehrlich R. (R.)
Eisenstein B.I. (B. I.)
Ernst J. (J.)
Ferguson T. (T.)
Frolov V.V. (V. V.)
Galik R.S. (R. S.)
Gan K.K. (K. K.)
Gao Y.S. (Y. S.)
Gibbons L. (L.)
Gittelman B. (B.)
Gollin G.D. (G. D.)
Gong D.T. (D. T.)
Gray S.W. (S. W.)
Gwon C. (C.)
Hartill D.L. (D. L.)
Heltsley B.K. (B. K.)
Hinson J.W. (J. W.)
Honscheid K. (K.)
Horwitz N. (N.)
Hsu L. (L.)
Hufnagel D. (D.)
Jian L. (L.)
Jones C.D. (C. D.)
Kagan H. (H.)
Kandaswamy J. (J.)
Karliner I. (I.)
Kass R. (R.)
Kreinick D.L. (D. L.)
Kubota Y. (Y.)
Lee J. (J.)
Li S.Z. (S. Z.)
Lipeles E. (E.)
Liu F. (F.)
Lowrey N. (N.)
Lyon A.L. (A. L.)
Magerkurth A. (A.)
Mahlke-Krüger H. (H.)
Mahmood A.H. (A. H.)
Maravin Y. (Y.)
McGee S. (S.)
Metreveli Z. (Z.)
Meyer T.O. (T. O.)
Miller D.H. (D. H.)
Mistry N.B. (N. B.)
Moneti G.C. (G. C.)
Mountain R. (R.)
Mueller J.A. (J. A.)
Muramatsu H. (H.)
Nam S. (S.)
Nandakumar R. (R.)
Nelson H.N. (H. N.)
Pappas S.P. (S. P.)
Park C.S. (C. S.)
Park W. (W.)
Patterson J.R. (J. R.)
Pavlunin V. (V.)
Pedlar T.K. (T. K.)
Peterson D. (D.)
Pivarski J. (J.)
Plager C. (C.)
Poling R. (R.)
Potlia V. (V.)
Richichi S.J. (S. J.)
Riley D. (D.)
Sadoff A.J. (A. J.)
Saleem M. (M.)
Sanghi B. (B.)
Savinov V. (V.)
Schwarthoff H. (H.)
Sedlack C. (C.)
Selen M. (M.)
Seth K.K. (K. K.)
Severini H. (H.)
Shapiro A. (A.)
Shepherd M.R. (M. R.)
Shibata E.I. (E. I.)
Shipsey I.P.J. (I. P.J.)
Skubic P. (P.)
Skwarnicki T. (T.)
Smith A. (A.)
Stepaniak C.J. (C. J.)
Stoeck H. (H.)
Stone S. (S.)
Stroynowski R. (R.)
Sun W.M. (W. M.)
Tatishvili G. (G.)
Thaler J.J. (J. J.)
Thayer J.B. (J. B.)
Thayer J.G. (J. G.)
Thorndike E.H. (E. H.)
Tomaradze A. (A.)
Urheim J. (J.)
Urner D. (D.)
Vogel H. (H.)
von Toerne E. (E.)
Wang J.C. (J. C.)
Wappler F. (F.)
Warburton A. (A.)
Weinberger M. (M.)
Weinstein A.J. (A. J.)
Wilksen T. (T.)
Williams J. (J.)
Yelton J. (J.)
Zhao X. (X.)
Zoeller M.M. (M. M.)
Zweber P. (P.)
Publication venue: 'American Physical Society (APS)'
Publication date: 01/01/2004
Field of study

We report on a search for CP violation in the decay of D0 and D0B to Kshort pi+pi-. The data come from an integrated luminosity of 9.0 1/fb of e+e- collisions at sqrt(s) ~ 10 GeV recorded with the CLEO II.V detector. The resonance substructure of this decay is well described by ten quasi-two-body decay channels (K*-pi+, K*0(1430)-pi+, K*2(1430)-pi+, K*(1680)-pi+, Kshort rho, Kshort omega, Kshort f0(980), Kshort f2(1270), Kshort f0(1370), and the ``wrong sign'' K*+ pi-) plus a small non-resonant component. We observe no evidence for CP violation in the amplitudes and phases that describe the decay D0 to K_S^0 pi+pi-.Comment: 10 pages, 3 figures, also available at http://w4.lns.cornell.edu/public/CLNS/, submitted to PR

Measurement of Lepton Momentum Moments in the Decay bar{B} \to X \ell \bar{\nu} and Determination of Heavy Quark Expansion Parameters and |V_cb|

Author: Adam N.E. (N. E.)
Ahmed S. (S.)
Alam M.S. (M. S.)
Alexander J.P. (J. P.)
Ammar R. (R.)
Anderson S. (S.)
Arms K. (K.)
Artuso M. (M.)
Athar S.B. (S. B.)
Avery P. (P.)
Benslama K. (K.)
Berkelman K. (K.)
Besson D. (D.)
Blusk S. (S.)
Boisvert V. (V.)
Bonvicini G. (G.)
Bornheim A. (A.)
Boulahouache C. (C.)
Breva-Newell L. (L.)
Briere R.A. (R. A.)
Bukin K. (K.)
Cassel D.G. (D. G.)
Chen G.P. (G. P.)
Chen S. (S.)
Cinabro D. (D.)
Coan T.E. (T. E.)
Cronin-Hennessy D. (D.)
Csorna S.E. (S. E.)
Dambasuren E. (E.)
Danko I. (I.)
Drell P.S. (P. S.)
Duboscq J.E. (J. E.)
Dubrovin M. (M.)
Dytman S.A. (S. A.)
Eckhart E. (E.)
Ecklund K.M. (K. M.)
Edwards K.W. (Kenneth W.)
Ehrlich R. (R.)
Eisenstein B.I. (B. I.)
Ernst J. (J.)
Ferguson T. (T.)
Frolov V.V. (V. V.)
Galik R.S. (R. S.)
Gan K.K. (K. K.)
Gao Y.S. (Y. S.)
Gibbons L. (L.)
Gittelman B. (B.)
Gollin G.D. (G. D.)
Gong D.T. (D. T.)
Gray S.W. (S. W.)
Gwon C. (C.)
Hartill D.L. (D. L.)
Heltsley B.K. (B. K.)
Hinson J.W. (J. W.)
Honscheid K. (K.)
Hsu L. (L.)
Hufnagel D. (D.)
Jian L. (L.)
Jones C.D. (C. D.)
Kagan H. (H.)
Kandaswamy J. (J.)
Karliner I. (I.)
Kass R. (R.)
Kreinick D.L. (D. L.)
Kubota Y. (Y.)
Lee J. (J.)
Li S.Z. (S. Z.)
Lipeles E. (E.)
Liu F. (F.)
Lowrey N. (N.)
Lyon A.L. (A. L.)
Magerkurth A. (A.)
Mahlke-Krüger H. (H.)
Mahmood A.H. (A. H.)
Maravin Y. (Y.)
McGee S. (S.)
Metreveli Z. (Z.)
Meyer T.O. (T. O.)
Miller D.H. (D. H.)
Mistry N.B. (N. B.)
Mountain R. (R.)
Mueller J.A. (J. A.)
Muramatsu H. (H.)
Nam S. (S.)
Nandakumar R. (R.)
Pappas S.P. (S. P.)
Park C.S. (C. S.)
Park W. (W.)
Patterson J.R. (J. R.)
Pavlunin V. (V.)
Pedlar T.K. (T. K.)
Peterson D. (D.)
Pivarski J. (J.)
Plager C. (C.)
Poling R. (R.)
Potlia V. (V.)
Richichi S.J. (S. J.)
Riley D. (D.)
Sadoff A.J. (A. J.)
Saleem M. (M.)
Savinov V. (V.)
Schwarthoff H. (H.)
Sedlack C. (C.)
Selen M. (M.)
Seth K.K. (K. K.)
Severini H. (H.)
Shapiro A. (A.)
Shepherd M.R. (M. R.)
Shibata E.I. (E. I.)
Shipsey I.P.J. (I. P.J.)
Skubic P. (P.)
Skwarnicki T. (T.)
Smith A. (A.)
Stepaniak C.J. (C. J.)
Stoeck H. (H.)
Stone S. (S.)
Stroynowski R. (R.)
Sun W.M. (W. M.)
Tatishvili G. (G.)
Thaler J.J. (J. J.)
Thayer J.B. (J. B.)
Thayer J.G. (J. G.)
Thorndike E.H. (E. H.)
Tomaradze A. (A.)
Urheim J. (J.)
Urner D. (D.)
Vogel H. (H.)
von Toerne E. (E.)
Wang J.C. (J. C.)
Wappler F. (F.)
Warburton A. (A.)
Weinberger M. (M.)
Weinstein A.J. (A. J.)
Wilksen T. (T.)
Williams J. (J.)
Yelton J. (J.)
Zhao X. (X.)
Zoeller M.M. (M. M.)
Zweber P. (P.)
Publication venue: 'American Physical Society (APS)'
Publication date: 19/12/2002
Field of study

We measure the primary lepton momentum spectrum in B-bar to X l nu decays, for p_l > 1.5 GeV/c in the B rest frame. From this, we calculate various moments of the spectrum. In particular, we find R_0 = [int(E_l>1.7) (dGam/dE_sl)*dE_l] / [int(E_l>1.5) (dGam/dE_sl)*dE_l] = 0.6187 +/- 0.0014_stat +/- 0.0016_sys and R_1 = [int(E_l>1.5) E_l(dGam/dE_sl)*dE_l] / [int(E_l>1.5) (dGam/dE_sl)*dE_l] = (1.7810 +/- 0.0007_stat +/- 0.0009_sys) GeV. We use these moments to determine non-perturbative parameters governing the semileptonic width. In particular, we extract the Heavy Quark Expansion parameters Lambda-bar = (0.39 +/- 0.03_stat +/- 0.06_sys +/- 0.12_th) GeV and lambda_1 = (-0.25 +/- 0.02_stat +/- 0.05_sys +/- 0.14_th) GeV^2. The theoretical constraints used are evaluated through order 1/M_B^3 in the non-perturbative expansion and beta_0*alpha__s^2 in the perturbative expansion. We use these parameters to extract |V_cb| from the world average of the semileptonic width and find |V_cb| = (40.8 +/- 0.5_Gam-sl +/- 0.4_(lambda_1,Lambda-bar)-exp +/- 0.9_th) x 10^-3. In addition, we extract the short range b-quark mass m_b^1S = (4.82 +/- 0.07_exp +/- 0.11_th) GeV/c^2. Finally, we discuss the implications of our measurements for the theoretical understanding of inclusive semileptonic processes.Comment: 21 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS, submitted to PR

CERN Document Server

Dynamic stability of vortex solutions of Ginzburg-Landau and nonlinear Schrödinger equations

Author: A. Jaffe
A. Jensen
A. Pazy
A. Soffer
A.C. Newell
B. Simon
C.D. Levermore
D.G. Aronson
D.G. Aronson
E. W.
E.B. Davies
E.B. Fabes
E.H. Lieb
F. Weissler
H. Berestycki
H. Osada
H.L. Cycon
J. Nash
J. Neu
J. Xin
J. Xin
J. Xin
J. Xin
L. Pismen
M. I. Weinstein
N. Ercolani
P. Mironescu
R. Creswick
R.J. Donnelly
R.L. Pego
T. Bethuel
T. Frisch
W. Weinstein
Publication venue: 'Springer Science and Business Media LLC'
Publication date: 01/10/1996
Field of study

The dynamic stability of vortex solutions to the Ginzburg-Landau and nonlinear Schrödinger equations is the basic assumption of the asymptotic particle plus field description of interacting vortices. For the Ginzburg-Landau dynamics we prove that all vortices are asymptotically nonlinearly stable relative to small radial perturbations. Initially finite energy perturbations of vortices decay to zero in L p (ℝ 2 ) spaces with an algebraic rate as time tends to infinity. We also prove that under general (nonradial) perturbations, the plus and minus one-vortices are linearly dynamically stable in L 2 ; the linearized operator has spectrum equal to (−∞, 0] and generates a C 0 semigroup of contractions on L 2 (ℝ 2 ). The nature of the zero energy point is clarified; it is resonance , a property related to the infinite energy of planar vortices. Our results on the linearized operator are also used to show that the plus and minus one-vortices for the Schrödinger (Hamiltonian) dynamics are spectrally stable, i.e. the linearized operator about these vortices has ( L 2 ) spectrum equal to the imaginary axis. The key ingredients of our analysis are the Nash-Aronson estimates for obtaining Gaussian upper bounds for fundamental solutions of parabolic operator, and a combination of variational and maximum principles.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/46494/1/220_2005_Article_BF02099719.pd

Deep Blue Documents

Continuization of Timed Petri Nets: From Performance Evaluation to Observation and Control

Author: A. Bemporad
A. Bemporad
A. Giua
A. Mandelbau
A. Ramirez-Trevino
D.G. Luenberger
D.G. Luenberger
E. Mosekilde
G. Chiola
G. Walter
G.F. Newell
H. Alla
H. Chen
J. Dai
J. Júlvez
J. Júlvez
J. Vandergraft
J.W. Forrester
L. Benevenuti
L. Farina
L. Kleinrock
L. Recalde
L. Recalde
M. Silva
M. Silva
M. Silva
M. Silva
M. Silva
M. Silva
M. Silva
M.K. Molloy
R. David
R. Vidal
S.P. Meyn
S.P. Meyn
Publication venue: 'Springer Science and Business Media LLC'
Publication date: 01/01/2005
Field of study

Abstract. State explosion is a fundamental problem in the analysis and synthesis of discrete event systems. Continuous Petri nets can be seen as a relaxation of discrete models allowing more efficient (in some cases polynomial time) analysis and synthesis algorithms. Nevertheless computational costs can be reduced at the expense of the analyzability of some properties. Even more, some net systems do not allow any kind of continuization. The present work first considers these aspects and some of the alternative formalisms usable for continuous relaxations of discrete systems. Particular emphasis is done later on the presentation of some results concerning performance evaluation, parametric design and marking (i.e., state) observation and control. Even if a significant amount of results are available today for continuous net systems, many essential issues are still not solved. A list of some of these are given in the introduction as an invitation to work on them.

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