COMPARISON OF CUT-BASED AND MATRIX ELEMENT METHOD RESULTS FOR BEYOND STANDARD MODEL QUARKS

Creative Commons License

Akyazi E., Unel G., Yilmaz M.

ACTA PHYSICA POLONICA B, cilt.44, sa.6, ss.1273-1286, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44 Sayı: 6
  • Basım Tarihi: 2013
  • Doi Numarası: 10.5506/aphyspolb.44.1273
  • Dergi Adı: ACTA PHYSICA POLONICA B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1273-1286
  • Gazi Üniversitesi Adresli: Evet

Özet

In this work, two different methods for extracting the mass of a new quark from the (pseudo) data are compared: the classical cut-based method and the Matrix Element Method. As a concrete example, a fourth family up type quark is searched in p-p collisions of 7 TeV center-of-mass energy. We have shown that even with a very small number of events, Matrix Element Method gives better estimations for the mass value and its error. Especially, for event samples in which Signal-to-Background ratio is greater than 0.2, Matrix Element Method reduces the statistical error approximately ten times.