Discovery of supersymmetry with degenerate mass spectrum

Kiyotomo Kawagoe, Mihoko M. Nojiri

研究成果: ジャーナルへの寄稿学術誌査読

31 被引用数 (Scopus)

抄録

The discovery of supersymmetric (SUSY) particles at the Large Hadron Collider (LHC) has been studied for models where the squarks and gluino are much heavier than the lightest supersymmetric particle. In this paper, we investigate SUSY discovery in models with a degenerate mass spectrum up to mLSP 0.7mq∼. Such a mass spectrum is predicted in a certain parameter region of the mixed modulus anomaly mediation model. We find that the effective transverse mass of the signal for the degenerate parameters shows a distribution similar to that of the background. Experimental sensitivity to the SUSY particles at the LHC therefore depends on the uncertainty of the background in this class of model. We also find that the SUSY signal shows an interesting correlation between Meff and E T which may be used to better determine the signal region and enhance the S/N ratio even if the sparticle masses are rather degenerate. This correlation is universal for models with new heavy colored particles decaying into visible particles and a stable neutral dark matter.

本文言語英語
論文番号115011
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
74
11
DOI
出版ステータス出版済み - 2006
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)

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