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First measurement of gamma(D*(+)).

First measurement of gamma(D*(+)).

Authors :
Ahmed S
Alam MS
Athar SB
Jian L
Ling L
Saleem M
Timm S
Wappler F
Anastassov A
Eckhart E
Gan KK
Gwon C
Hart T
Honscheid K
Hufnagel D
Kagan H
Kass R
Pedlar TK
Thayer JB
von Toerne E
Zoeller MM
Richichi SJ
Severini H
Skubic P
Undrus A
Savinov V
Chen S
Hinson JW
Lee J
Miller DH
Shibata EI
Shipsey IP
Pavlunin V
Cronin-Hennessy D
Lyon AL
Park W
Thorndike EH
Coan TE
Gao YS
Maravin Y
Narsky I
Stroynowski R
Ye J
Wlodek T
Artuso M
Benslama K
Boulahouache C
Bukin K
Dambasuren E
Majumder G
Mountain R
Skwarnicki T
Stone S
Wang JC
Wolf A
Kopp S
Kostin M
Mahmood AH
Csorna SE
Danko I
Jain V
McLean KW
Xu Z
Godang R
Bonvicini G
Cinabro D
Dubrovin M
McGee S
Bornheim A
Lipeles E
Pappas SP
Shapiro A
Sun WM
Weinstein AJ
Jaffe DE
Mahapatra R
Masek G
Paar HP
Eppich A
Hill TS
Morrison RJ
Nelson HN
Briere RA
Chen GP
Ferguson T
Vogel H
Alexander JP
Bebek C
Berger BE
Berkelman K
Blanc F
Boisvert V
Cassel DG
Drell PS
Duboscq JE
Ecklund KM
Ehrlich R
Gaidarev P
Gibbons L
Gittelman B
Gray SW
Hartill DL
Heltsley BK
Hsu L
Jones CD
Kandaswamy J
Kreinick DL
Lohner M
Magerkurth A
Mahlke-Krüger H
Meyer TO
Mistry NB
Nordberg E
Palmer M
Patterson JR
Peterson D
Riley D
Romano A
Schwarthoff H
Thayer JG
Urner D
Valant-Spaight B
Viehhauser G
Warburton A
Avery P
Prescott C
Rubiera AI
Stoeck H
Yelton J
Brandenburg G
Ershov A
Kim DY
Wilson R
Eisenstein BI
Ernst J
Gladding GE
Gollin GD
Hans RM
Johnson E
Karliner I
Marsh MA
Plager C
Sedlack C
Selen M
Thaler JJ
Williams J
Edwards KW
Sadoff AJ
Ammar R
Bean A
Besson D
Zhao X
Anderson S
Frolov VV
Kubota Y
Lee SJ
Poling R
Smith A
Stepaniak CJ
Urheim J
Source :
Physical review letters [Phys Rev Lett] 2001 Dec 17; Vol. 87 (25), pp. 251801. Date of Electronic Publication: 2001 Nov 28.
Publication Year :
2001

Abstract

We 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).

Details

Language :
English
ISSN :
0031-9007
Volume :
87
Issue :
25
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
11736560
Full Text :
https://doi.org/10.1103/PhysRevLett.87.251801