Uncertainty study of Ds^-（D^-）→γlv^-（1=e,μ） decays determined by wave function

来源 :中国物理C：英文版 | 被引量 : 0次 | 上传用户：goubo

【摘要】

：

Wave function is important for determining decay constants fDs- and fD-. Using the 5 types of D meson wave functions in the heavy quark limit, we studied the un

【作者】

：

侯召宇郭鹏吴文旺

【机构】

：

DepartmentofMathematicsandPhysics

【出处】

：

中国物理C：英文版

【发表日期】

：

2011年7期

【关键词】

：

衰变常数不确定性波函数 FDS 轻子衰变 D介子重夸克分支比 D decay wave function branching ratio

【基金项目】

：

Supported by National Science Foundation of Hebei Province of China （A2008000421）

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

Wave function is important for determining decay constants fDs- and fD-. Using the 5 types of D meson wave functions in the heavy quark limit, we studied the uncertainties of radiative pure-leptonic decays of Ds- （D-） mesons. The branching ratios are （1.0

其他文献

陶瓷材料的进展与应用

一般的陶瓷材料都很脆易于破裂,因此不能作承受载荷的工程材料而广泛地使用。但是,高强度的“超级陶瓷”却有了某些新的应用,例如内燃机活塞和宇宙飞船的外皮等,这就开僻了无

期刊

陶瓷材料超级陶瓷内燃机活塞宇宙飞船工程材料外皮氮化硅螺钉局部应力集中局部应力

国外难熔金属合金的近期发展

引言钨钼铌钽及其合金是非常吸引人的高温材料。作为高温材料,除应具有很好的高温强度外,还应有良好的低温延性。早些时候,着重用固溶强化方法提高合金的高温强度。近年来

期刊

难熔金属合金形变热处理高温材料铂合金沉淀强化掺杂钨丝高温强度蠕变性能抗氧化涂层铝合金

Ground states and excitation spectra of baryons in a non-relativistic model with the anharmonic pot

In this work the mass spectra for some of the baryon resonances of the particle data group with three and four star status are obtained,and a unified descriptio

期刊

激发光谱非相对论势模型简谐势重子基态质量公式共振谱baryons resonances spectrum anharmonic potent

Measurement of the integrated luminosities of the data taken by BESⅢ at √s=3.650 and 3.773 GeV

Data sets were collected with the BES detector at the BEPC collider at the center-of-mass energy of√s=3.650 GeV during May 2009 and at√s=3.773 GeV from Januar

期刊

光度测量BES集成BEPC数据集探测器对撞机大角度Bhabha scattering events integrated luminosity

A study of antineutrino spectra from spent nuclear fuel at Daya Bay

The Daya Bay Reactor Antineutrino Experiment is designed to determine the as yet unknown neutrino mixing angle,θ13,by measuring the disappearance of electron a

期刊

中微子实验光谱计算大亚湾核燃料核反应堆电子中微子运行时间同位素spent nuclear fuel antineutrino spectrum

Radial excitation states of η and η′ in the chiral quark model

A chiral quark model is applied to calculate the spectra of pseudoscalar mesons η and η . By analyzing the obtained spectra, we find that the mesons η (2 1 S

期刊

夸克模型手征激发态衰变宽度径向赝标介子实验数据衰变模式X（1835） X（2120） X（2370） η（1760） chiral qu

含镍量对Fe-Si-Al-Ni系新型高导磁合金“Super Sendust”磁性的影响

Ⅰ、前言本文作者之一山本1937年同日本东北大学名誉教授增本量一起在Fe-Si-Al系合金中在9.6％Si-5.4％Al和余Fe成份附近发现了一种初始导磁率μ_o=35100、最大导磁率μ_m=11500

期刊

导磁合金磁性Fe-Si-Al-NiSuper Sendust增本量含镍量铁心材料压粉矫顽力达斯

A scenario for high accuracy τ mass measurement at BEPC-II

Scenarios for the τ mass measurement at the upgraded Beijing Electron-Positron Collider (BEPC-Ⅱ) are studied. A nested minimization procedure is used to optim

期刊

北京正负电子对撞机质量测量高精确度BEPCⅡ积分亮度统计误差最小化τ mass scan optimization uncertainty

Fast computation of observed cross section for ψ′ → PP decays

It has been conjectured that the relative phase between strong and electromagnetic amplitudes is universally -90° in charmonium decays. ψ′ decaying into

期刊

计算时间截面衰变聚丙烯解析表达式线性回归方法粲夸克偶素相对相位cross section； narrow resonance； pseudosc

A note on the soliton picture in a Skyrme-like model

The role of the anti-commutator term of the chiral current in a Skyrme-like model was studied associated with the symmetric Skyrmion and the nucleon properties

期刊

SKYRME模型孤子类似图片耦合常数介电常数换向器QCDSkyrme model soliton stability

Uncertainty study of Ds^-（D^-）→γlv^-（1=e,μ） decays determined by wave function

与本文相关的学术论文