First measurement of Γ(D*+) -: art. no. 251801

被引：107

作者：

Ahmed, S ^{[1
]}

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, IPJ

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

机构：

[1] SUNY Albany, Albany, NY 12222 USA

[2] Ohio State Univ, Columbus, OH 43210 USA

[3] Univ Oklahoma, Norman, OK 73019 USA

[4] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[5] Purdue Univ, W Lafayette, IN 47907 USA

[6] Univ Rochester, Rochester, NY 14627 USA

[7] So Methodist Univ, Dallas, TX 75275 USA

[8] Syracuse Univ, Syracuse, NY 13244 USA

[9] Univ Texas, Austin, TX 78712 USA

[10] Univ Texas Pan Amer, Edinburg, TX 78539 USA

[11] Vanderbilt Univ, Nashville, TN 37235 USA

[12] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[13] Wayne State Univ, Detroit, MI 48202 USA

[14] CALTECH, Pasadena, CA 91125 USA

[15] Univ Calif San Diego, La Jolla, CA 92093 USA

[16] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[17] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[18] Cornell Univ, Ithaca, NY 14853 USA

[19] Univ Florida, Gainesville, FL 32611 USA

[20] Harvard Univ, Cambridge, MA 02138 USA

[21] Univ Illinois, Urbana, IL 61801 USA

[22] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[23] Ithaca Coll, Ithaca, NY 14850 USA

[24] Univ Kansas, Lawrence, KS 66045 USA

[25] Univ Minnesota, Minneapolis, MN 55455 USA

[26] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.87.251801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first measurement of the D*+ width using 9/fb of e(+)e(-) data collected near the Y(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(o)pi (+) decay. We find Gamma (D*+) = 96 +/- 4 (stat) +/-22 (syst) keV. We also measure the energy release in the decay and compute Deltam = m(D*+) - m(Do) 145.412 +/- 0.002 (stat) +/- 0.012 (syst) MeV/c(2).

引用

页码：251801 / 1

页数：5

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