Θ+-Pentaquark parity from associative baryon production in πd collisions, π ± + d → Θ+ + Σ±
نویسندگان
چکیده
منابع مشابه
Θ ∗ partner to the Θ ( 1540 ) baryon
If the exotic baryon Θ(1540) is udud¯ s with J P = 1 2 + , we predict that there is a Θ * (1540− 1680) with J P = 3 2 +. The width Γ(Θ * → KN) is at least a factor of three larger than Γ(Θ). The possibilities of Θ * → KN π or Θγ via M 1 and E2 multipoles are discussed. A major plank in establishing the constituent quark model was the absence of baryons with strangeness +1. The announcement of s...
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Abstract The recent developments in the search of exotic pentaquark hadrons are briefly reviewed. We then focus on investigating how the exotic pentaquark Θ(1540) baryon production can be identified in the γN → KKN reactions, focusing on the influence of the background (non-Θ production) mechanisms. By imposing the SU(3) symmetry and using various quark model predictions, we are able to fix the...
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We estimate the mass and the width of pentaquark Θ∗ states in the {27} baryon multiplet from chiral soliton model. The calculations show that the mass of Θ∗ is about 1.60 GeV and the width for the process Θ∗ → KN is less than 44 MeV. We also discuss the search for the existence of Θ∗ states in physical processes.
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ژورنال
عنوان ژورنال: Physics of Atomic Nuclei
سال: 2006
ISSN: 1063-7788,1562-692X
DOI: 10.1134/s1063778806050140