Measurement of the cross section and the to ratio with decays in pp collisions at
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- 作者：CMS Collaboration ; S. Chatrchyan ; V. Khachatryan ; A.M. Sirunyan ; A. Tumasyan ; W. Adam ; T. Bergauer ; M. Dragicevic ; J. Er? ; C. Fabjan ; M. Friedl ; R. Fr¨¹hwirth ; V.M. Ghete ; J. Hammer ; N. H?rmann ; J. Hrubec ; M. Jeitler ; W. Kiesenhofer ; V. Kn¨¹nz ; M. Krammer ; et al.
- 关键词：CMS ; B physics
- 刊名：Physics Letters B
- 出版年：2012
- 出版时间：14 August, 2012
- 年：2012
- 卷：714
- 期：2-5
- 页码：136-157
- 全文大小：630 K
文摘
The differential production cross section and the cross section ratio are measured as functions of transverse momentum and rapidity in collisions at using data collected by the CMS experiment at the LHC. The measurements are based on decays reconstructed in the exclusive final state , with the subsequent decays and , using a data sample corresponding to an integrated luminosity of . The product versus falls faster than that of b mesons. The measured value of for and is , and the integrated ratio is , where the uncertainties are statistical and systematic, respectively.