Measurement of the tt Differential Cross Section do/dM (sub t overbar t) p overbar p Collisions at Square Root of s equals 1.96 TEV.

Bridgeman, A. P.

Technical Information Center Oak Ridge Tennessee

关键词: T-quarks;    Differential cross sections;    Standard model;    Distribution functions;    Decay;   

RP-ID  :  DE2008941180

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Presented is a measurement of the t(bar t) differential cross section, d(sigma)/dM(sub t(bar t)), in p(bar p) collisions at (radical)s = 1.96 TeV using 2.7 fb(sup -1) of CDF II data. I find that d(sigma)/dM(sub t(bar t)) is consistent with the Standard Model expectation, as modeled by PYTHIA with CTEQ5L parton distribution functions. I set limits on the ratio (kappa)/M(sub Pl) in the Randall-Sundrum model by looking for Kaluza Klein gravitons which decay to top quarks. I find (kappa)/M(sub Pl) > 0.16 at the 95% confidence level.