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    题名: Measurement of the B(0) Production Cross Section in pp Collisions at root s=7 TeV
    作者: Chatrchyan,S;Khachatryan,V;Sirunyan,AM;Tumasyan,A;Adam,W;Bergauer,T;Dragicevic,M;Ero,J;Fabjan,C;Friedl,M;Fruhwirth,R;...etc.
    贡献者: 物理學系
    关键词: QUARK PRODUCTION;P(P)OVER-BAR COLLISIONS
    日期: 2011
    上传时间: 2012-06-11 10:53:27 (UTC+8)
    出版者: 國立中央大學
    摘要: Measurements of the differential production cross sections d sigma/dp(T)(B) and d sigma/dy(B) for B(0) mesons produced in pp collisions at root s = 7 TeV are presented. The data set used was collected by the CMS experiment at the LHC and corresponds to an integrated luminosity of 40 pb(-1). The production cross section is measured from B(0) meson decays reconstructed in the exclusive final state J/psi K(S)(0), with the subsequent decays J psi -> mu(+)mu(-) and K(S)(0) -> pi(+)pi(-). The total cross section for p(T)(B) > 5 GeV and |y(B)| < 2: 2 is measured to be 33.2 +/- 2.5 +/- 3.5 mu b, where the first uncertainty is statistical and the second is systematic.
    關聯: PHYSICAL REVIEW LETTERS
    显示于类别:[物理學系] 期刊論文

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