منابع مشابه
Can X(5568) be a tetraquark state?
Very recently, the D0 collaboration has reported the observation of a narrow structure, X(5568), in the decay process X(5568) → B sπ using the 10.4fb−1 data of pp̄ collision at √ s = 1.96 TeV. This structure is of great interest since it is the first hadronic state with four different valence quark flavors, b, s, u, d. In this work, we present a tetraquark interpretation of the X(5568). Based on...
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X.1. The metaphors invoked The phrase " phonetic interpretation " (included in both special themes of the 6th Conference on Laboratory Phonology) invokes a particular view of language sound structure in which phonetics is defined as the semantics of phonology, which implies, conversely, that phonology is the syntax of phonetics. (See Pierrehumbert, 1990, inter alia, for earlier explicit articul...
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I review the main theoretical conclusions from high-energy spectral observations of Galactic Black Hole Candidate systems. With an eye towards future missions, I show how the ability to reach such conclusions depends critically on the type of spectral coverage one has available. Perhaps the most important factor in determining how well a set of observations constrains theoretical models is the ...
متن کاملar X iv : 1 60 3 . 01 13 1 v 1 [ he p - ph ] 3 M ar 2 01 6 X ( 5568 ) and and its partner states
Very recently, the DØ Collaboration observed a narrow structure by analyzing the Bsπ ± invariant mass spectrum, which was named as the X(5568) [1]. The X(5568) has a mass m = 5567.8 ± 2.9(stat)+0.9 −1.9(syst) MeV and width Γ = 21.9 ± 6.4(stat)+5.0 −2.5(syst) MeV [1]. Its discovery mode indicates that the valence quark component of the X(5568) should be lsl̄b̄ (l = u or d). Thus, the X(5568) is a ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2016
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2016.07.049