Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Naples Federico IIIT4k papers
- Centre National de la Recherche ScientifiqueFR3.7k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT3.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3.3k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT3.1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT3k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2.9k papers
- Rutherford Appleton LaboratoryGB2.8k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.8k papers
- Sapienza University of RomeIT2.7k papers
- The Ohio State UniversityUS2.7k papers
17 papers · 2 filters
Light masses in short distance penguin loops
Mario Abud, Giulia Ricciardi, George Sterman
Penguin diagrams for decays such as involve virtual loops of or other light quarks. Logarithms of the virtual quark mass could, in principle, influence the phenom…
Spin-1 resonance contributions to the weak Chiral Lagrangian: the vector field formulation
Giancarlo D'Ambrosio, Jorge Portoles
We use the Vector formulation to evaluate vector and axial-vector exchange contributions to the O(p^4) weak Chiral Lagrangian. We recover in this framework the bulk of the contribu…
Analysis of K_L -> pi^+ pi^- gamma in Chiral Perturbation Theory
Giancarlo D'Ambrosio, Jorge Portoles
We study the long-distance dominated K_L -> pi^+ pi^- gamma decay at O(p^6) in Chiral Perturbation Theory. The complete calculation of the O(p^6) loop magnetic amplitude is carried…
Report of the Working Group on Goldstone Boson Production and Decay
J. Bijnens, G. Colangelo, G. D'Ambrosio +11
This is the summary of the working group on Goldstone Boson Production and Decay of the Chiral Dynamics Workshop in Mainz, September 1-5, 1997. For the production aspects we discus…
Radiative and rare kaon decays : an update
Giancarlo D'Ambrosio
We review some new developments in the theoretical description of the processes K ->pi gamma gamma, K_L ->gamma l^+ l^-, K_L ->pi^0 e^+ e^- and K_L ->mu^+ mu^-.
Can we extract short-distance information from B(K_L -> mu^+ mu^-)?
G. D'Ambrosio, G. Isidori, J. Portoles
A new analysis of the long-distance two-photon dispersive amplitude of K_L -> mu^+ mu^- is presented. We introduce a phenomenological parameterization of the K_L -> gamma^* gamma^*…
Fermion Mass Matrices in term of the Cabibbo-Kobayashi-Maskawa Matrix and Mass Eigenvalues
D. Falcone, O. Pisanti, L. Rosa
A parameter free, model independent analysis of quark mass matrices is carried out. We find a representation in terms of a diagonal mass matrix for the down (up) quarks and a suita…
Hybrid Inflation from Supersymmetric SU(5)
L. Covi, G. Mangano, A. Masiero +1
A scheme of hybrid inflation is considered in the framework of the minimal supersymmetric SU(5) model with an extra singlet. The relevant role of the cubic term in the adjoint repr…
D^0-D^0(bar) mixing in the weak-gauged U(4)_L x U(4)_R Chiral Lagrangian Model
G. Amoros, F. J. Botella, S. Noguera +1
The D^0-D^0(bar) mixing is analyzed in a weak gauged U(4)_L x U(4)_R chiral lagrangian model where the electroweak interaction is introduced as a gauge theory over the meson degree…
QCD corrections to b -> s gamma gamma induced decays: B -> X_s gamma gamma and B_s -> gamma gamma
Laura Reina, Giulia Ricciardi, Amarjit Soni
We present a complete calculation of the Leading Order QCD corrections to the quark level decay amplitude for b -> s gamma gamma and study their relevance for both the inclusive br…
Pontecorvo neutrino-antineutrino oscillations: theory and experimental limits
S. Esposito, N. Tancredi
We study Pontecorvo neutrino-antineutrino oscillations both in vacuum and in matter within a field theoretic approach, showing that this phenomenon can occur only if neutrinos have…
Cosmological implications of a class of SO(10) models
G. Mangano, L. Rosa
The cosmological implications of a class of SO(10) models are discussed. In particular we show how a good prediction for neutrino masses is obtained in order to fit with the MSW me…
A Positive Test for Fermi-Dirac Distributions of Quark-Partons
F. Buccella, I. Dorsner, O. Pisanti +2
By describing a large class of deep inelastic processes with standard parameterization for the different parton species, we check the characteristic relationship dictated by Pauli…
Three Flavour Majorana Neutrinos with Magnetic Moments in a Supernova
S. Esposito, V. Fiorentino, G. Mangano +1
The resonant transition effects MSW and NSFP for three flavour Majorana neutrinos in a supernova are considered, where the transition magnetic moments are likely to play a relevant…
Generalization of the Bound State Model
Masayasu Harada, Francesco Sannino, Joseph Schechter +1
In the bound state approach the heavy baryons are constructed by binding, with any orbital angular momentum, the heavy meson multiplet to the nucleon considered as a soliton in an…
Low x Behaviour of the Isovector Nucleon Polarized Structure Function and the Bjorken Sum Rule
F. Buccella, O. Pisanti, P. Santorelli
The combination g_1^p(x) - g_1^n(x) is derived from SLAC data on polarized proton and deuteron targets, evaluated at Q^2 = 10 GeV^2, and compared with the results of SMC experiment…
Hyperfine Splitting of Low-Lying Heavy Baryons
M. Harada, A. Qamar, F. Sannino +2
We calculate the next-to-leading order contribution to the masses of the heavy baryons in the bound state approach for baryons containing a heavy quark. These corrections a…