Light Quark Spin-Flavor Symmetry for Baryons Containing a Heavy Quark in Large N QCD

نویسنده

  • Elizabeth Jenkins
چکیده

The couplings and interactions of baryons containing a heavy quark are related by light quark spin-flavor symmetry in the large N limit. The single pion coupling constant which determines all heavy quark baryon-pion couplings is equal to the pion coupling constant for light quark baryons. Light quark symmetry relations amongst the baryon couplings are violated at order 1/N. Heavy quark spin-flavor symmetry is used in conjunction with large N light quark spin-flavor symmetry to determine the couplings of the degenerate doublets of heavy quark baryons. UCSD/PTH 93-17 hep-ph/9307243 June 1993

برای دانلود رایگان 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

Charm and bottom baryon masses in the 1/N expansion

The 1/Nc expansion has proven useful for studying the spin-flavor properties of baryons containing light quarks. A spin-flavor symmetry for baryons is defined in large-Nc QCD. Away from the Nc → ∞ limit, 1/Nc corrections which break large-Nc baryon spin-flavor symmetry can be classified in terms of the spin and flavor symmetries which remain for finite Nc. Since explicit SU(3) flavor symmetry b...

متن کامل

Hyperfine Mass Splittings of Baryons Containing a Heavy Quark in Large N QCD

The hyperfine mass splittings of baryons containing a heavy quark are derived at leading order in large N QCD. Hyperfine splittings either preserve or violate heavy quark spin symmetry. Previous work proves that the splittings which preserve heavy quark spin symmetry are proportional to J at order 1/N , where J is the angular momentum of the light degrees of freedom of the baryon. This work pro...

متن کامل

Baryons Containing a Heavy Quark as Solitons ⋆ ( REVISED

The possibility of interpreting baryons containing a single heavy quark as bound states of solitons (that arise in the nonlinear sigma model) and heavy mesons is explored. Particular attention is paid to the parity of the bound states and to the role of heavy quark symmetry. ⋆ Work supported in part by the U.S. Dept. of Energy under Contract no. DEAC-03-81ER40050 and under grant no. DE-FG03-90E...

متن کامل

1/mQ and 1/Nc Expansions for Excited Heavy Baryons with Light Quarks in the Spin-Flavor Symmetric Representation

The mass spectrum of the L = 1 orbitally excited heavy baryons with light quarks in the spin-flavor symmetric representation is studied by the 1/Nc expansion method in the framework of the heavy quark effective theory. The mixing effect from the baryons in the mixed representation is considered. The general pattern of the spectrum is predicted which will be verified by the experiments in the ne...

متن کامل

Heavy Baryons in Su(2) × Su(6) Typeset Using Revt E X

The spectrum of baryons containing heavy quarks of one flavor is described in terms of representations of the group SU(2) × SU(6), where the two factor groups refer to spin rotations of the heavy quarks and spin-flavor rotations of the light quarks, respectively. This symmetry has a natural interpretation in the heavy quark limit. We exhibit the decomposition of baryon mass operators under this...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1993