Dijet Signals for Low Mass Strings at the Large Hadron Collider

作者：Anchordoqui Luis A^*; Goldberg Haim; Luest Dieter; Nawata Satoshi; Stieberger Stephan; Taylor Tomasz R

来源：Physical Review Letters, 2008, 101(24): 241803.

DOI：10.1103/PhysRevLett.101.241803

Assuming that the fundamental string mass scale is in the TeV range and the theory is weakly coupled, we discuss possible signals of string physics at the Large Hadron Collider (LHC). In D-brane constructions, the dominant contributions to full-fledged string amplitudes for all the common QCD parton subprocesses leading to dijets are completely independent of the details of compactification, and can be evaluated in a parameter-free manner. We make use of these amplitudes evaluated near the first resonant pole to determine the discovery potential of LHC for the first Regge excitations of the quark and gluon. Remarkably, the reach of LHC after a few years of running can be as high as 6.8 TeV. Even after the first 100 pb(-1) of integrated luminosity, string scales as high as 4.0 TeV can be discovered. Data on pp -> direct gamma+ jet can provide corroboration for string physics at scales as high as 5 TeV.

• 出版日期2008-12-12
• 单位东北大学