منابع مشابه
Charmed bottom baryon spectroscopy from lattice QCD
Zachary S. Brown, William Detmold, Stefan Meinel, and Kostas Orginos Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Department of Physics, University of Arizona, Tucson,...
متن کاملExclusive Nonleptonic Bottom to Charm Baryon Decays including Nonfactorizable Contributions
Exclusive nonleptonic decays of bottom baryons to charm baryons and pseudoscalar light mesons are analyzed within a relativistic three-quark model. We include factorizing as well as nonfactorizing contributions to the decay amplitudes. The total contribution of the nonfactorizing diagrams amount up to 30 % of the factorizing contributions in amplitude. We present detailed predictions for rates ...
متن کاملCharm 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 کاملHeavy quark spectroscopy and prediction of bottom baryon masses
QCD describes hadrons as valence quarks in a sea of gluons and q̄q pairs. At distances above ∼ 1 GeV quarks acquire an effective constituent mass due to chiral symmetry breaking. A hadron can then be thought of as a bound state of constituent quarks. In the simplest approximation the hadron mass M is then given by the sum of the masses of its constituent quarks mi, first written down by Sakharov...
متن کاملFirst Observation of Bottom Baryon Σb States at CDF
We present the latest results on the search for bottom baryon states Σb using ∼ 1 fb of CDF data. The study is performed with the world’s largest sample of fully reconstructed Λb decays collected by CDF II detector at √ s = 1.96TeV in the hadronic trigger path. We observe 4 new states consistent with Σ (∗)± b bottom baryons.
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ژورنال
عنوان ژورنال: E3S Web of Conferences
سال: 2020
ISSN: 2267-1242
DOI: 10.1051/e3sconf/202016401008