Phys. Rev. Lett. 80, 3919 - 3923 (1998)
Observation of the Radiative Decay D*+→D+γ
J. Bartelt et al. (CLEO Collaboration)
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J. Bartelt1, S. E. Csorna1, V. Jain1 *, K. W. McLean1, S. Marka1, R. Godang2, K. Kinoshita2, I. C. Lai2, P. Pomianowski2, S. Schrenk21, G. Bonvicini3, D. Cinabro3, R. Greene3, L. P. Perera3, G. J. Zhou3, B. Barish4, M. Chadha4, S. Chan4, G. Eigen4, J. S. Miller4, C. O'Grady4, M. Schmidtler4, J. Urheim4, A. J. Weinstein4, F. Würthwein4, D. W. Bliss5, G. Masek5, H. P. Paar5, S. Prell5, V. Sharma5, D. M. Asner6, J. Gronberg6, T. S. Hill6, D. J. Lange6, R. J. Morrison6, H. N. Nelson6, T. K. Nelson6, J. D. Richman6, D. Roberts6, A. Ryd6, M. S. Witherell6, R. Balest7, B. H. Behrens7, W. T. Ford7, A. Gritsan7, H. Park7, J. Roy7, J. G. Smith7, J. P. Alexander8, C. Bebek8, B. E. Berger8, K. Berkelman8, K. Bloom8, V. Boisvert8, D. G. Cassel8, H. A. Cho8, D. S. Crowcroft8, M. Dickson8, S. von Dombrowski8, P. S. Drell8, K. M. Ecklund8, R. Ehrlich8, A. D. Foland8, P. Gaidarev8, L. Gibbons8, B. Gittelman8, S. W. Gray8, D. L. Hartill8, B. K. Heltsley8, P. I. Hopman8, J. Kandaswamy8, P. C. Kim8, D. L. Kreinick8, T. Lee8, Y. Liu8, N. B. Mistry8, C. R. Ng8, E. Nordberg8, M. Ogg8 †, J. R. Patterson8, D. Peterson8, D. Riley8, A. Soffer8, B. Valant-Spaight8, C. Ward8, M. Athanas9, P. Avery9, C. D. Jones9, M. Lohner9, C. Prescott9, J. Yelton9, J. Zheng9, G. Brandenburg10, R. A. Briere10, A. Ershov10, Y. S. Gao10, D. Y.-J. Kim10, R. Wilson10, H. Yamamoto10, T. E. Browder11, Y. Li11, J. L. Rodriguez11, T. Bergfeld12, B. I. Eisenstein12, J. Ernst12, G. E. Gladding12, G. D. Gollin12, R. M. Hans12, E. Johnson12, I. Karliner12, M. A. Marsh12, M. Palmer12, M. Selen12, J. J. Thaler12, K. W. Edwards13,13b, A. Bellerive14,14b, R. Janicek14,14b, D. B. MacFarlane14,14b, P. M. Patel14,14b, A. J. Sadoff15, R. Ammar16, P. Baringer16, A. Bean16, D. Besson16, D. Coppage16, C. Darling16, R. Davis16, S. Kotov16, I. Kravchenko16, N. Kwak16, L. Zhou16, S. Anderson17, Y. Kubota17, S. J. Lee17, J. J. O'Neill17, S. Patton17, R. Poling17, T. Riehle17, A. Smith17, M. S. Alam18, S. B. Athar18, Z. Ling18, A. H. Mahmood18, H. Severini18, S. Timm18, F. Wappler18, A. Anastassov19, J. E. Duboscq19, D. Fujino19 ‡, K. K. Gan19, T. Hart19, K. Honscheid19, H. Kagan19, R. Kass19, J. Lee19, M. B. Spencer19, M. Sung19, A. Undrus19 §, R. Wanke19, A. Wolf, M. M. Zoeller19, B. Nemati20, S. J. Richichi20, W. R. Ross20, P. Skubic20, M. Bishai21, J. Fast21, J. W. Hinson21, N. Menon21, D. H. Miller21, E. I. Shibata21, I. P. J. Shipsey21, M. Yurko21, S. Glenn22, S. D. Johnson22, Y. Kwon22 **, S. Roberts22, E. H. Thorndike22, C. P. Jessop23, K. Lingel23, H. Marsiske23, M. L. Perl23, V. Savinov23, D. Ugolini23, R. Wang23, X. Zhou23, T. E. Coan24, V. Fadeyev24, I. Korolkov24, Y. Maravin24, I. Narsky24, V. Shelkov24, J. Staeck24, R. Stroynowski24, I. Volobouev24, J. Ye24, M. Artuso25, F. Azfar25, A. Efimov25, M. Goldberg25, D. He25, S. Kopp25, G. C. Moneti25, R. Mountain25, S. Schuh25, T. Skwarnicki25, S. Stone25, G. Viehhauser25, and X. Xing25 (CLEO Collaboration)
1Vanderbilt University, Nashville, Tennessee 37235
2Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
3Wayne State University, Detroit, Michigan 48202
4California Institute of Technology, Pasadena, California 91125
5University of California, San Diego, La Jolla, California 92093
6University of California, Santa Barbara, California 93106
7University of Colorado, Boulder, Colorado 80309-0390
8Cornell University, Ithaca, New York 14853
9University of Florida, Gainesville, Florida 32611
10Harvard University, Cambridge, Massachusetts 02138
11University of Hawaii at Manoa, Honolulu, Hawaii 96822
12University of Illinois, Urbana-Champaign, Illinois 61801
13aCarleton University, Ottawa, Ontario, Canada K1S 5B6
13band the Institute of Particle Physics, Canada
14aMcGill University, Montréal, Québec, Canada H3A 2T8
14band the Institute of Particle Physics, Canada
15Ithaca College, Ithaca, New York 14850
16University of Kansas, Lawrence, Kansas 66045
17University of Minnesota, Minneapolis, Minnesota 55455
18State University of New York at Albany, Albany, New York 12222
19Ohio State University, Columbus, Ohio 43210
20University of Oklahoma, Norman, Oklahoma 73019
21Purdue University, West Lafayette, Indiana 47907
22University of Rochester, Rochester, New York 14627
23Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
24Southern Methodist University, Dallas, Texas 75275
25Syracuse University, Syracuse, New York 13244
Received 19 November 1997
We have observed a signal for the decay D*+→D+γ at a significance of 4 standard deviations. From the measured branching ratio B(D*+→D+γ)/B(D*+→D+π0) = 0.055±0.014±0.010 we find B(D*+→D+γ) = 0.017±0.004±0.003, where the first uncertainty is statistical and the second is systematic. We also report the highest precision determination of the remaining D*+ branching fractions.
©1998 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.80.3919
DOI: 10.1103/PhysRevLett.80.3919
PACS: 13.20.Fc, 12.39.Fe, 13.40.Hq, 14.40.Lb
* Permanent address: Brookhaven National Laboratory, Upton, NY 11973.
† Permanent address: University of Texas, Austin, TX 78712.
‡ Permanent address: Lawrence Livermore National Laboratory, Livermore, CA 94551.
§ Permanent address: BINP, RU-630090 Novosibirsk, Russia.
** Permanent address: Yonsei University, Seoul 120-749, Korea.
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