منابع مشابه
A possible global group structure for exotic states
Based on the fact that the long expected pentaquark which possesses the exotic quantum numbers of B = 1 and S = 1 was not experimentally found, although exotic states of XY Z have been observed recently, we conjecture that the heavy flavors may play an important role in stabilizing the hadronic structures beyond the traditional qq̄ and qqq composites. The success of the SU(3) quark model [1–3], ...
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در این پایان نامه به بررسی واپاشی مزون j?? به دو مزون ?^0و ?^0به وسیله ی دو روش، فاکتوری کردن و روش حالت نهایی قوی پرداخته ایم.در ابتدا واپاشی فوق را از روش فاکتوری کردن مورد محاسبه قرار دادیم. ولی نتایج به دست آمده از این روش بسیار کمتر از نتایج تجربی بود. بنابراین روش دوم که در این پایان نامه به تفصیل بیان شده است؛ را برای این واپاشی به کار گرفته ایم؛ که این روش سه گذار مختلف را شامل می ش...
All the Adiabatic Bound States of No 2 (j=0)
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The existence of flavor exotic QQq̄q̄ molecular-type states is investigated. An attractive force between two pseudoscalar H = (Qq̄) heavy meson is generated by (correlated) two-pion exchange. The emergence of a (loosely) bound state depends crucially on the value of the coupling constant g of the H∗Hπ vertex. For a g value calculated from the experimental upper limit on the width of the D∗ meson t...
متن کاملThe J Pc = 0 ++ Scalar Meson Nonet and Glueball of Lowest Mass
The evidence for the low mass J = 0 states is reconsidered. We suggest classifying the isoscalars f0(980) and f0(1500) as members of the 0 ++ nonet, with a mixing rather similar to that of the pseudoscalars η′ and η. The broad state called f0(400− 1200) or “sigma” and the state f0(1370) are considered as different signals from a single broad resonance, which we take to be the lowest-lying 0 glu...
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ژورنال
عنوان ژورنال: Chinese Physics C
سال: 2013
ISSN: 1674-1137
DOI: 10.1088/1674-1137/37/3/033104