s^(1/2)=29─35GeVe^+e^-湮没中D^(*±)介子的平均多重数  

Multiplicity of D in e e Annihilation at Gev

作　　者：陈鄂生[1] 王群 谢去病 陈岩[1] 

机构地区：[1]山东大学物理系,山东大学出版社

出　　处：《高能物理与核物理》1998年第3期234-240,共7页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：分析了ＴＡＳＳＯ等５个实验组的数据，并采用最新衰变分支比，得到了＝２９－３５ＧｅＶｅ＋ｅ－湮没中Ｄ＊±介子的平均多重数为０．２４±０．０２．这个结果同在ＲｅｖｉｅｗｏｆＰａｒｔｉｃｌｅＰｈｙｓｉｃｓ中公布的为０．４３±０．０７严重不符。我们认为，我们的结果是可信的。We question the validity of the multiplicity data (D D ) = 0.43± 0.07 in e e- annihilation at = 29-35 GeV which is listed in Review of Particle Physics. After annalyzing five sets of data provided by five different collaborations, we derive the world average value: This result is in contradiction with that listed in Review of Particle Physics.

关 键 词：e+e-湮没 粲介子 平均多重数 衰变分支比 

分 类 号：O572.2[理学—粒子物理与原子核物理]