Search for excited and exotic electrons in the e gamma decay channel in p(p)over-bar collisions at root s=1.96 TeV

Acosta D., Adelman J., Affolder T., Akimoto T., Albrow M., Ambrose D., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.94, sa.10, 2005 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 94 Sayı: 10
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1103/physrevlett.94.101802
  • Dergi Adı: PHYSICAL REVIEW LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • İstanbul Üniversitesi Adresli: Hayır

Özet

We present a search for excited and exotic electrons (e(*)) decaying to an electron and a photon, both with high transverse momentum. We use 202 pb(-1) of data collected in p (p) over bar collisions at root s =1.96 TeV with the Collider Detector at Fermilab II detector. No signal above standard model expectation is seen for associated ee(*) production. We discuss the e(*) sensitivity in the parameter space of the excited electron mass M(e)(*) and the compositeness energy scale Lambda. In the contact interaction model, we exclude 132 GeV/c(2)< M(e*)< 879 GeV/c(2) for Lambda=M(e*) at 95% confidence level (C.L.). In the gauge-mediated model, we exclude 126 GeV/c(2)< M(e*)< 430 GeV/c(2) at 95% C.L. for the phenomenological coupling f/Lambda approximate to 10(-2) GeV(-1).