396 citations · 3k across the 100 of their papers we have counts for
100 papers
Cabibbo suppressed hyperon production off nuclei induced by antineutrinos
M. Benitez Galan, L. Alvarez-Ruso, M. Rafi Alam +2
In this work we study the production of and hyperons in strangeness changing charged current interactions of muon antineutrinos on nuclear targets. At the nucleon…
Exploring hyperon structure with electromagnetic transverse densities
Jose Manuel Alarcón, Astrid N. Hiller Blin, Manuel J. Vicente Vacas +1
We explore the structure of the spin-1/2 flavor-octet baryons (hyperons) through their electromagnetic transverse densities. The transverse densities describe the distribution of c…
Relating CP-violating decays to the neutron EDM
Thomas Gutsche, Astrid N. Hiller Blin, Sergey Kovalenko +4
We use the present upper bound on the neutron electric dipole moment to give an estimate for the upper limit of the CP-violating couplings of the meson to the neutron. Usin…
Peripheral transverse densities of the baryon octet from chiral effective field theory and dispersion analysis
J. M. Alarcón, A. N. Hiller Blin, M. J. Vicente Vacas +1
The baryon electromagnetic form factors are expressed in terms of two-dimensional densities describing the distribution of charge and magnetization in transverse space at fixed lig…
CP-violating decays of the pseudoscalars eta and eta' and their connection to the electric dipole moment of the neutron
Thomas Gutsche, Astrid N. Hiller Blin, Sergey Kovalenko +4
Using the present upper bound on the neutron electric dipole moment, we give an estimate for the upper limit of the CP-violating couplings of the eta(eta') to the nucleon. Using th…
meson self-energy in nuclear matter from resonant interactions
D. Cabrera, A. N. Hiller Blin, M. J. Vicente Vacas
The -meson properties in cold nuclear matter are investigated by implementing resonant interactions as described in effective approaches including the unitarization of scat…
Consistency between SU(3) and SU(2) chiral perturbation theory for the nucleon mass
Xiu-Lei Ren, L. Alvarez-Ruso, Li-Sheng Geng +3
Treating the strange quark mass as a heavy scale compared to the light quark mass, we perform a matching of the nucleon mass in the SU(3) sector to the two-flavor case in covariant…
Present Status of Single Pion Production in Neutrino-Nucleus Reactions
L. Alvarez-Ruso, E. Hernandez, J. Nieves +1
Some of the recent progress in the physics of pion production induced by neutrinos on nucleons and nuclei is reviewed from a theoretical perspective. The importance of Watson's the…
Watson's theorem and the axial transition
L. Alvarez-Ruso, E. Hernández, J. Nieves +1
We present a new determination of the axial form factors from neutrino induced pion production data. For this purpose, the model of Hernandez {\it et al.} [Phys. Rev. D76, 033…
Weak Quasielastic Production of Hyperons and Threshold Production of Two Pions
S. K. Singh, M. Sajjad Athar, M. Rafi Alam +5
We have studied quasielastic charged current hyperon production induced by on free nucleon and the nucleons bound inside the nucleus and the results are presented for sev…
Local Invariants Vanishing on Stationary Horizons: A Diagnostic for Locating Black Holes
Don N. Page, Andrey A. Shoom
Inspired by the example of Abdelqader and Lake for the Kerr metric, we construct local scalar polynomial curvature invariants that vanish on the horizon of any stationary black hol…
Chiral dynamics in the gamma p --> p pi0 reaction
A. N. Hiller Blin, T. Ledwig, M. J. Vicente Vacas
We investigate the neutral pion photoproduction on the proton near threshold in covariant chiral perturbation theory with the explicit inclusion of Delta degrees of freedom. This c…
Neutrino-nucleus CCQE-like scattering
J. Nieves, R. Gran, I. Ruiz Simo +2
RPA correlations, spectral function and 2p2h (multi-nucleon) effects on charged-current neutrino-nucleus reactions without emitted pions are discussed. We pay attention to the infl…
Octet-baryon axial-vector charges and SU(3)-breaking effects in the semileptonic hyperon decays
T. Ledwig, J. Martin Camalich, L. S. Geng +1
The octet-baryon axial-vector charges and the g1/f1 ratios measured in the semileptonic hyperon decays are studied up to O(p^3) using the covariant baryon chiral perturbation theor…
The nucleon mass and pion-nucleon sigma term from a chiral analysis of Nf = 2+1 lattice QCD world data
L. Alvarez-Ruso, T. Ledwig, J. Martin-Camalich +1
Fits of the p^4 covariant SU(2) baryon chiral perturbation theory to lattice QCD nucleon mass data from several collaborations for 2 and 2+1 flavors are presented. We consider cont…
The nucleon mass and pion-nucleon sigma term from a chiral analysis of Nf=2 lattice QCD world data
L. Alvarez-Ruso, T. Ledwig, J. Martin Camalich +1
We investigate the pion-mass dependence of the nucleon mass within the covariant SU(2) baryon chiral perturbation theory up to order p4 with and without explicit Delta(1232) degree…
Weak Strangeness and Eta Production
M. Rafi Alam, M. Sajjad Athar, Luis Alvarez-Ruso +3
We have studied strange particle production off nucleons through and channels, and specifically single kaon/antikaon, eta, associated particle production for ne…
Nuclear Dependence in Weak Structure Functions and the Determination of Weak Mixing Angle
M. Sajjad Athar, H. Haider, I Ruiz Simo +1
We have studied nuclear medium effects in the weak structure functions and and in the extraction of weak mixing angle using Paschos Wolfenstein(PW) relation.…
EM vs Weak Structure Functions in DIS processes
M. Sajjad Athar, H. Haider, I Ruiz Simo +1
We obatin the ratio (i=2,3, A=Be, C, Fe, Pb; D=Deuteron) in the case of weak and electromagnetic nuclear structure functions. For this, relativistic nuclear spectral…
Quasi-elastic scattering, RPA, 2p2h and neutrino--energy reconstruction
J Nieves, R Gran, F Sanchez +1
We discuss some nuclear effects, RPA correlations and 2p2h (multinucleon) mechanisms, on charged-current neutrino-nucleus reactions that do not produce a pion in the final state. W…
Pion production in neutrino-nucleus collisions
E. Hernández, J. Nieves, M. J. Vicente Vacas
We compare our pion production results with recent MiniBooNE data measured in mineral oil. Our total cross sections lie below experimental data for neutrino energies above 1 GeV. D…
Neutrino-nucleus quasi-elastic and 2p2h interactions up to 10 GeV
R. Gran, J. Nieves, F. Sanchez +1
We extend to 10 GeV results from a microscopic calculation of charged-current neutrino-nucleus reactions that do not produce a pion in the final state. For the class of events comi…
Single pion production in neutrino nucleus scattering
E. Hernández, J. Nieves, M. J. Vicente Vacas
We study one pion production in both charged and neutral current neutrino nucleus scattering for neutrino energies below 2 GeV. We use a theoretical model for one pion production a…
Two Particle-Hole Excitations in Charged Current Quasielastic Antineutrino--Nucleus Scattering
J. Nieves, I. Ruiz Simo, M. J. Vicente Vacas
We evaluate the quasielastic and multinucleon contributions to the antineutrino nucleus scattering cross section and compare our results with the recent MiniBooNE data. We use a lo…