منابع مشابه
Pentaquark Searches at CDF
Experimental results of a search for the Ξ3/2(1860) cascade pentaquark state in data collected with the CDF 2 Detector in Run II at the Tevatron are presented. No evidence for these states in the neutral Ξπ and doubly charged Ξ−π− modes has been found. Preliminary upper limits on yields at 1862 MeV/c relative to the well established resonance Ξ(1530) are presented.
متن کاملPentaquark Searches at Cdf * Dmitry O. Litvintsev a (for Cdf Collaboration)
Searches for states, characterized by so-called exotic quantum numbers, i.e., quantum numbers that cannot be obtained from minimal (qq̄) or (qqq) configurations of standard mesons and baryons, have taken place since the introduction of QCD and quark model. Until recently, these searches yielded very little conclusive evidence for such states. During 2003, however, the situation has changed drama...
متن کاملSearches for New Physics at CDF
The search for physics beyond the Standard Model is one of the primary motivations of the Run II at the Tevatron. The CDF collaboration has been very active in this field by searching in a variety of final states for signals of new physics processes. The observation of no significant deviation from the Standard Model has led to limits on the cross-sections of the considered processes, which, in...
متن کاملHigh Mass Resonance Searches at CDF
Many models beyond the standard model (SM) predict the presence of new heavy particles which can potentially be observed as narrow resonances in the invariant mass spectra of high pT objects. The Randall-Sundrum (RS) graviton (G) in the RS model, Z , W , excited quarks (q) in the quark compositeness model, axigluon (A) in the chiral color model, coloron (C) in the flavor universal coloron model...
متن کاملPentaquark Searches in H1
We report on searches in deep inelastic ep scattering for narrow baryonic states decaying into Ξ − π − , Ξ − π + , K 0 S p and their charge conjugates, at centre-of-mass energies of 300 and 318 GeV. No signal for a new narrow baryonic state is observed in the mass ranges 1600-2100 MeV (Ξπ) and from threshold up to 1700 MeV (K 0 S p). The standard baryon Ξ(1530) 0 is observed in the decay mode Ξ...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2005
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2005.01.062