Axial Vector Tetraquark with Twos-Quarks
نویسندگان
چکیده
منابع مشابه
axial-vector mesons
A previous model where the low-lying axial-vector mesons are dynamically generated, implementing unitarity in coupled channels in the vector-pseudoscalar (V P ) meson interaction, is applied to evaluate the decay widths of the a1(1260) and b1(1235) axial-vector mesons into πγ. Unlike the case of the a1, the b1 radiative decay is systematically underestimated at tree level. In this work we evalu...
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We discuss the possible symmetries of the effective lagrangian describing interacting pseudoscalar-, vector-, and axial-vector mesons. Specific choices of the parameters give rise to an [SU(2) ⊗ SU(2)] symmetry. This symmetry can be obtained either á la Georgi, with all states in the spectrum remaining massless, or in a new realization, implying decoupling of the pseudoscalar bosons from degene...
متن کاملScalar and axial-vector mesons
Almost thirty years ago, Penny G. Estabrooks asked “Where and what are the scalar mesons?” [1]. The first part of her question can now be confidently responded [2]. However, with respect to the “What” many puzzles remain unanswered. Scalar and axial-vector mesons form part of a large family of mesons. Consequently, though it is useful to pay them some extra attention, there is no point in discu...
متن کاملRegarding the axial-vector mesons
The implications of the f1(1285) − f1(1420) mixing for the K1(3P1) − K1(1P1) mixing angle is investigated. Based on the f1(1285)− f1(1420) mixing angle ∼ 50 suggested from the analysis for a substantial body of data concerning the f1(1420) and f1(1285), the masses of the K1( 3P1) and K1( 1P1) are determined to be ∼ 1307.35± 0.63 MeV and 1370.03± 9.69 MeV, respectively, which therefore suggests ...
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in this thesis our aim is to construct vector field in r3 for which the corresponding one-dimensional maps have certain discontinuities. two kinds of vector fields are considered, the first the lorenz vector field, and the second originally introced here. the latter have chaotic behavior and motivate a class of one-parameter families of maps which have positive lyapunov exponents for an open in...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2007
ISSN: 0375-9687
DOI: 10.1143/ptps.168.194