D-wave baryon resonances with charm from coupled-channel dynamics

نویسنده

  • J. Hofmann
چکیده

Identifying the zero-range exchange of vector mesons as the driving force for the swave scattering of pseudo-scalar mesons off the baryon ground states, the spectrum of 3 2 − molecules is computed. We predict a strongly bound 15-plet of C = −1 states. A narrow crypto-exotic octet of charm-zero states is foreseen. In the C = +1 sector a sextet of narrow resonances is formed due to the interaction of D mesons with the baryon decuplet. A strongly bound triplet of double-charm states is a consequence of coupled-channel dynamics driven by the D mesons.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Coupled-channel study of baryon resonances with charm

Empirically the QCD spectrum of charmed baryon states is poorly studied so far. It is important to correlate the properties of charmed states to those firmly established, applying a unified and quantitative framework. Our strategy is to extend previous works [1, 2, 3, 4] that performed a coupledchannel study of the s-wave scattering processes where a Goldstone boson hits an open-charm baryon gr...

متن کامل

ar X iv : h ep - p h / 05 01 22 4 v 1 2 5 Ja n 20 05 1 Baryon resonances from chiral coupled - channel dynamics

We discuss the formation of sand d-wave baryon resonances as predicted by the chiral SU(3) symmetry of QCD. Based on the leading order term of the chiral Lagrangian a rich spectrum of molecules is generated, owing to final-state interactions. The spectrum of sand d-wave baryon states with zero and non-zero charm is remarkably consistent with the empirical pattern. In particular, the recently an...

متن کامل

ar X iv : h ep - p h / 03 11 20 5 v 1 1 7 N ov 2 00 3 Charmed meson resonances from chiral coupled - channel dynamics

Charmed meson resonances with quantum numbers J P = 0 + and J P = 1 + are generated in terms of chiral coupled-channel dynamics. At leading order in the chiral expansion a parameter-free prediction is obtained for the scattering of Goldstone bosons off charmed pseudo-scalar and vector mesons. The recently announced narrow open charm states observed by the BABAR and CLEO collaborations are repro...

متن کامل

Baryon Resonances

Identifying a zero-range exchange of vector mesons as the driving force for the s-wave scattering of pseudo-scalar mesons off the baryon ground states, a rich spectrum of molecules is formed. We argue that chiral symmetry and large-Nc considerations determine that part of the interaction which generates the spectrum. We suggest the existence of strongly bound crypto-exotic baryons, which contai...

متن کامل

Recent Developments in Chiral Unitary Dynamics of Resonances

In this talk I summarize recent findings made on the description of axial vector mesons as dynamically generated states from the interaction of peseudoscalar mesons and vector mesons, dedicating some attention to the two K1(1270) states. Then I review the generation of open and hidden charm scalar and axial states. Finally, I present recent results showing that the low lying 1/2 baryon resonanc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006