First Measurement of Γ(D*+)
2001; American Physical Society; Volume: 87; Issue: 25 Linguagem: Inglês
10.1103/physrevlett.87.251801
ISSN1092-0145
AutoresS. Ahmed, M. S. Alam, S. B. Athar, L. Jian, L. Ling, M. Saleem, S. Timm, F. Wappler, A. Anastassov, E. A. Eckhart, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, D. Hufnagel, H. Kagan, R. Kass, T. K. Pedlar, J. B. Thayer, E. von Toerne, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, A. Undrus, V. Savinov, S. Chen, J. W. Hinson, Jhinhwan Lee, D. H. Miller, E. I. Shibata, I. Shipsey, V. Pavlunin, D. Cronin-Hennessy, Andrew Lyon, Wilford E. Park, E. H. Thorndike, T. E. Coan, Y. 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, J. Wang, A. Wolf, S. Köpp, M. Kostin, Athar Mahmood, S. E. Csorna, I. Dankó, V. Jain, K. W. McLean, Z.Z. Xu, R. Godang, G. Bonvicini, D. Cinabro, M. Dubrovin, S. McGee, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, W. Sun, A. Weinstein, D. E. Jaffe, R. Mahapatra, G. Masek, H. P. Paar, A. Eppich, T. S. Hill, R. J. Morrison, H. Nelson, R. A. Briere, G. Chen, T. Ferguson, H. Vogel, J. Alexander, C. Bebek, B. E. Berger, K. Berkelman, F. Blanc, V. Boisvert, D. Cassel, P. S. Drell, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, P. Gaidarev, L. Gibbons, B. Gittelman, S. W. Gray, Donald L. Hartill, B. Heltsley, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, M. Lohner, A. Magerkurth, H. Mahlke-Krüger, T. Meyer, N. B. Mistry, E. Nordberg, M. Palmer, J. Patterson, D. Peterson, D. Riley, A. Romano, H. Schwarthoff, J. B. Thayer, D. Urner, B. Valant-Spaight, G. H. A. Viehhauser, A. Warburton, P. Avery, C. Y. Prescott, A. I. Rubiera, H. Stoeck, J. Yelton, G. Brandenburg, A. Ershov, D. Kim, R. Wilson, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, C. Plager, C. Sedlack, M. Selen, J. Thaler, James A. Williams, K. W. Edwards, A. J. Sadoff, R. Ammar, A. Bean, D. Besson, Xinli Zhao, S. Anderson, V. Frolov, Y. Kubota, Soohyung Lee, R. Poling, A. Smith, C. Stepaniak, J. Urheim,
Tópico(s)High-Energy Particle Collisions Research
ResumoWe present the first measurement of the D*(+) width using 9/fb of e(+)e(-) data collected near the Upsilon(4S) resonance by the CLEO II.V detector. Our method uses advanced tracking techniques and a reconstruction method that takes advantage of the small vertical size of the Cornell Electron-positron Storage Ring beam spot to measure the energy release distribution from the D*(+)-->D(0)pi(+) decay. We find gamma(D*(+)) = 96+/-4 (stat)+/-22 (syst) keV. We also measure the energy release in the decay and compute Delta m identical with m(D*(+))-m(D(0)) = 145.412+/-0.002 (stat)+/-0.012 (syst) MeV/c(2).
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