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11 results on '"Lucio M"'

1. Hierarchy of scales in B→PS decays

Author

D. Delepine, J. L. Lucio M., J. A. Mendoza S., Carlos A. Ramírez, George Rupp, Eef van Beveren, Pedro Bicudo, Brigitte Hiller, and Frieder Kleefeld

Subjects
Quantum chromodynamics, Physics, Particle physics, Meson, Branching fraction, High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, Scalar (mathematics), Pseudoscalar, Particle decay, Factorization, High Energy Physics::Experiment, B meson
Abstract

We show that the naive factorization approach can accommodate the existence of the observed hierarchy of branching ratios for the B→PS decays (P stands for pseudoscalar and S for scalar mesons respectively[1]).

Published
2008

2. B meson decays into charmless pseudoscalar scalar mesons

Author

D. Delepine, J. L. Lucio M., Carlos A. Ramírez, and J. A. Mendoza S.

Subjects
Physics, Particle physics, Meson, Branching fraction, High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, Scalar (mathematics), Pseudoscalar meson, Pseudoscalar, Factorization, Bounded function, High Energy Physics::Experiment, B meson
Abstract

The nonleptonic weak decays of meson B into a scalar and pseudoscalar meson are studied. The scalar mesons under consideration are σ (or f0(600)), f0(980), a0(980) and K0*(1430). We calculate the Branching ratios in the Naive Factorization approximation. Scalars are assumed to be qq bounded sates, but an estimation can be obtained in the case they are four bounded states.

Published
2007

3. On the quark structure of the f0(980) meson and the VEPP-2M experimental results for the φ→π0π0γ decay

Author

M. Napsuciale and J. L. Lucio M.

Subjects
Quantum chromodynamics, Quark, Physics, Nuclear physics, Particle physics, Pion, Meson, Spontaneous symmetry breaking, Scalar (mathematics), Chiral symmetry breaking, Bottom quark
Abstract

It is shown that VEPP-2M results for the φ→π0π0γ decay are consistent with a (mostly) ss content for the f0(980), provided we take into account the effects of the UA(1) breaking in the scalar sector.

Published
2000

4. A critical view to the determination of the mass and width of the f0(980)

Author

Gastón Gutiérrez, J. L. Lucio M., and G. Moreno

Subjects
Nuclear physics, Physics, Particle physics, Work (thermodynamics), Pion, Pair production, Meson, Mass spectrum, Invariant mass
Abstract

We discuss some of the results reported in the literature regarding the nature of the f0(980). We restraint our work to the information about the f0(980) obtained from the data and analysis of centrally produced meson pairs.

Published
1996

5. Spin 3/2 interacting fields and the 1/m expansion

Author

M. Napsuciale and J. L. Lucio M.

Subjects
Baryon, Physics, symbols.namesake, Theoretical physics, Consistency (statistics), Quantum mechanics, symbols, Order (ring theory), Fermion, Series expansion, Lagrangian, Calculation methods, Spin-½
Abstract

We analyze the consistency of the Chiral Lagrangian approach to the description of the S=3/2 interacting theory. We show that to leading order in the 1/m expansion, the approach leads to the appropriated constraints and the theory is free of the so called ‘‘off‐shell’’ ambiguities.

Published
1996

6. Hierarchy of scales in B→PS decays

Author

Delepine, D., primary, Lucio M., J. L., additional, Mendoza S., J. A., additional, Ramírez, Carlos A., additional, Rupp, George, additional, van Beveren, Eef, additional, Bicudo, Pedro, additional, Hiller, Brigitte, additional, and Kleefeld, Frieder, additional

Published
2008
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