Measurement of Inclusive Semileptonic Branching Fractions for D－→e－X and D0→e－X

BES Collaboration

Chinese Physics C> 2002, Vol. 26> Issue(6) : 547-556

Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X

BES Collaboration

Institute of High Energy Physics, CAS, Beijing 100039, China

Abstract
HTML
Reference
Related

PDF

Abstract：
We report a measurement of the absolutely inclusive semileptonic branching fractions of D^－ and D⁰ mesons, using a data sample of 22.3pb^－1 collected with BES detector at BEPC e⁺e^－ Collider at s=4.03GeV and based on the method of "combinative D⁺ and D⁰ single and double tags". The measured values of the branching fractions for D^－→e^－X and D⁰→e^－X are (21.8±8.5±4.2)% and (8.9±3.0±1,6)%, respectively. The measured ratio of the branching fractions is BF(D^－→e^－X)/BF(D⁰→e^－X)=2.4±1.7±0.8.

References

[1]

. BAI Jin-Zhi et al. Nucl. Instr. and Methods,1994,A344:319 2. YE Ming-Han, ZHENG Zhi-Peng. Proceedings of the With International Symposium on Lepton and Photon Interactions Stanford, California, 1989. In:edited by M. Riordan. Singapore:World Scientific, 1990. 122;Eur. Phys. J., 1998, C3:1 3. RONG Gang, ZHAO Jia-Wei, LUO Chun-Hui et al. HEPNP, 2002, 26(3):207(in Chinese)(荣刚,赵家伟,罗春晖等.高能物理与核物理,2002,26(3):207) 4. ZHAO Jia-Wei. Test of QED with the Rections of e+e–→γγ(γ)at LEP2000 and Study of the Inclusive Semi-Leptonic Decays of D0 and D+ Mesons at BES Ph. D thesis University of Science and Technology of China, 2001(in Chinese)(赵家伟.在LEP2000上利用e+e–→γγ(γ)反应检验QED以及在北京谱仪上D介子单举半轻子衰变的研究.博士论文,中国科学技术大学,2001) 5. Aguilar Benitez M et al. ZPHY ,1987, C36:551 6. Baltrusaitis R M et al. Phys. Rev. Lett.,1985,54:1976 7. Schindler R H et al. Phys. Rev.,1981,D24:78 8. Bacino W et al. Phys. Rev. Lett.,1980,45:3299. Albrecht H et al. Phys. Lett.,1996,B374:249 10. Kubota Y et al. Phys. Rev.,1996,D54:299411. Particle Data Group, The Europea Physical Journal C ,2000,V15

[1]	HU Xi-Duo , SHAO Ming-Zhu , LUO Shi-Yu , LIU Yong-Sheng , ZHU De-Hai . Average Field Idea and Single Particle Model for 2 Dimension Crystallization Beams(Ⅱ). Chinese Physics C, 2004, 28(2): 196-199.
[2]	LI Ming-Liang , ZHU Sheng-Jiang , CHE Xing-Lai , YU Ying-Nan . Research on Two-Quasiparticle Bands in ⁹⁸Sr. Chinese Physics C, 2004, 28(S1): 75-77.
[3]	SHEN Shui-Fa , YU Xiao-Han . Decay of ⁸³Sr and Discussion of Its Daughter's Band Structures. Chinese Physics C, 2004, 28(S1): 78-80.
[4]	PENG Quan-Ling , SUN Jian , ZHAO Guang-Yuan , SHI Cai-Tu . Principle and Software Design of Helmhotz Coil Measurement System. Chinese Physics C, 2001, 25(9): 920-925.
[5]	Yang Jianjun , Ma Boqiang , Li Guanglie . Non-perturbative Quark Propagator and the Study of the Non-trivial Q² Dependence in the Nucleon Structure Functions. Chinese Physics C, 1997, 21(2): 146-156.
[6]	Yu Hong , Shen Qixing , Zhang Lin . Angular Distribution of Process e⁺e^－→τ⁺τ^－,τ^－→a₁υτ,a₁→ρπ and Characteristics of a₁ Meson. Chinese Physics C, 1994, 18(7): 583-590.
[7]	BES Collaboration . Experimental Study of Resonance f₂(1270) in the J/ψ Hadronic Decay. Chinese Physics C, 1993, 17(2): 97-106.
[8]	SANG Jian-Ping , LIU Chao-Shan , LIU Yong . Relation Between the Gap at Z=64 Subshell and the Abrupt Transition in the Region N=88～90. Chinese Physics C, 1991, 15(2): 150-157.
[9]	HOU Ren-Chang , ZHAO Xuan . QUADRUPOLE-OCTUPOLE TWO-PHONON EXCITATIONS IN INELASTIC SCATTERING. Chinese Physics C, 1983, 7(2): 236-244.
[10]	Sa Ben-hao , Zhang Xi-zhen , Li Zhu-xia , Shi Yi-jin . A PRIMARY RESEARCH OF THE PHONON RENORMALIZATION OF NUCLEAR FIELD THEORY. Chinese Physics C, 1980, 4(3): 398-400.
[11]	WU SHI-SHU . ON NUCLEAR SINGLE-PARTICLE POTENTIALS（Ⅲ）SINGLEPARTICLE ENERGIES DETERMINED BY THE NONHERMITIAN POTENTIAL U_αβ=M_αβ（ε_β）. Chinese Physics C, 1979, 3(4): 469-483.

Access

Get Citation

BES Collaboration. Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X[J]. Chinese Physics C, 2002, 26(6): 547-556.

BES Collaboration. Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X[J]. Chinese Physics C, 2002, 26(6): 547-556. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2001-09-11
Revised: 1900-01-01

Article Metric

Article Views(3732)
PDF Downloads(720)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X

BES Collaboration

Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date: 2001-09-11
Accepted Date: 1900-01-01
Available Online: 2002-06-05

Abstract: We report a measurement of the absolutely inclusive semileptonic branching fractions of D^－ and D⁰ mesons, using a data sample of 22.3pb^－1 collected with BES detector at BEPC e⁺e^－ Collider at s=4.03GeV and based on the method of "combinative D⁺ and D⁰ single and double tags". The measured values of the branching fractions for D^－→e^－X and D⁰→e^－X are (21.8±8.5±4.2)% and (8.9±3.0±1,6)%, respectively. The measured ratio of the branching fractions is BF(D^－→e^－X)/BF(D⁰→e^－X)=2.4±1.7±0.8.