Pc(4457)+ , Pc(4440)+ , and Pc(4312)+ : Molecules or compact pentaquarks?
نویسندگان
چکیده
منابع مشابه
Exotic Pentaquarks, Crypto-heptaquarks and Linear Three-hadronic Molecules
In this talk, multiquarks are studied microscopically in a standard quark model. In pure ground-state pentaquarks the short-range interaction is computed and it is shown to be repulsive, a narrow pentaquark cannot be in the groundstate. As a possible excitation, an additional quark-antiquark pair is then considered, and this is suggested to produce linear molecular system, with a narrow decay w...
متن کاملPENTAQUARKS - FACTS AND MYSTERIES or SISYPHUS AT WORK
Recent evidence for pentaquark baryons is critically reviewed in the light of new high statistics data. The search of the WA89 experiment for the Ξ(1860) is presented in detail and consequences of its non-observations are discussed. 1 The Myth of Sisyphus Giving these days a talk on pentaquarks or even worse writing afterwards a report for the proceedings reminds very much on Sisyphus, a man et...
متن کامل–1– Pentaquarks
(3100), and for the early unsuccessful attempts to confirm them. The table below lists papers published since then giving results of further unsuccessful searches. There are experiments at high energies and low; in new reactions and old; there are experiments—some by the same groups that claimed the original discoveries—with orders-of-magnitude greater statistics than before; there are experime...
متن کاملPentaquarks and Radially Excited Baryons∗
Although chiral soliton model predictions for the mass of the lightest exotic pentaquark, the Θ with zero isospin and unit strangeness, have been around for some time1, the study of pentaquarks as baryon resonances became popular only recently when experiments2,3 indicated their existence. These experiments were stimulated by a chiral soliton model estimate4 suggesting that such exotic baryons ...
متن کاملSoliton Picture for Pentaquarks
In this talk I report on a thorough comparison between the bound state and rigid rotator approaches to generate baryon states with non–zero strangeness in chiral soliton models. This comparison shows that the scattering amplitude in the bound state approach contains contributions generated by the exchange of the rigid pentaquark excitation, and that the two approaches are consistent with each o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2019
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.100.054002