Results 61 to 70 of about 231,942 (269)

A benefit‐cost analysis of child care subsidy expansions: The New York State case

Contemporary Economic Policy, Volume 44, Issue 1, Page 131-151, January 2026.
Abstract Proposals to expand child care assistance have proliferated at the national and state levels. This paper uses a novel approach to estimate the benefits and costs of providing child care subsidies to families up to three times the federal poverty line while supplementing child care worker compensation — a recently‐enacted reform in New York ...
Robert Paul Hartley, Irwin Garfinkel, Elizabeth Ananat, Sophie Collyer, Buyi Wang, Christopher Wimer   +5 more
wiley   +1 more source

Isospin breaking in the pion-nucleon coupling constant and the nucleon-nucleon scattering length

Ядерна фізика та енергетика, 2016
Charge independence breaking (CIB) in the pion-nucleon coupling constant and the nucleon-nucleon scattering length is considered on the basis of the Yukawa meson theory.
V. A. Babenko, N. M. Petrov
doaj  

Dispersion relations for hadronic light-by-light scattering and the muon g – 2

EPJ Web of Conferences, 2018
The largest uncertainties in the Standard Model calculation of the anomalous magnetic moment of the muon (g – 2)μ come from hadronic effects, and in a few years the subleading hadronic light-by-light (HLbL) contribution might dominate the theory error ...
Procura Massimiliano, Colangelo Gilberto, Hoferichter Martin, Stoffer Peter   +3 more
doaj   +1 more source

Pion Form Factor in Chiral Limit of Hard-Wall AdS/QCD Model

, 2007
We develop a formalism to calculate form factor and charge density distribution of pion in the chiral limit using the holographic dual model of QCD with hard-wall cutoff. We introduce two conjugate pion wave functions and present analytic expressions for
A. V. Radyushkin, A. V. Radyushkin, E. Witten, H. R. Grigoryan, J. M. Maldacena, L. Da Rold, S. B. Gerasimov, S. B. Gerasimov   +7 more
core   +1 more source

Chiral Symmetry Restoration and Pion Interaction in Nuclear Matter [PDF]

, 1998
This paper is devoted to the interplay between p-wave, s-wave pion-nucleon/ nucleus interaction and in-medium pion-pion interaction with special emphasis on the role of the nuclear pionic scalar density driving a large amount of chiral symmetry ...
Chanfray, Guy, Davesne, Dany
core   +3 more sources

Pion-pion scattering in two dimensions [PDF]

Physical Review D, 1999
Massive two-flavor QED_2 is known to have many similarities to the two-flavor QCD_4. Here we compare the - scattering amplitudes (actually an analog process in QED_2) of the two theories. The QED_2 amplitude is computed from the bosonized version of the model while the QCD_4 amplitude is computed from an effective low energy chiral Lagrangian.
Schechter, Joseph, Delphenich, D., Vaidya, S.   +2 more
openaire   +2 more sources

Measuring the Genuine Mismatch Negativity in the Auditory Multi‐Feature Paradigm

European Journal of Neuroscience, Volume 63, Issue 1, January 2026.
We designed and evaluated a cascadic control condition for the auditory multi‐feature oddball paradigm to control for the contribution of physical differences and adaptation to the mismatch negativity (MMN). Smaller, later, or no “genuine” deviant minus control MMNs were found for four sound features compared to “classic” deviant minus standard MMNs ...
Andreas Widmann, Erich Schröger, Nicole Wetzel   +2 more
wiley   +1 more source

The width of the Δ-resonance at two loop order in baryon chiral perturbation theory

Physics Letters B, 2016
We calculate the width of the delta resonance at leading two-loop order in baryon chiral perturbation theory. This gives a correlation between the leading pion–nucleon–delta and pion–delta couplings, which is relevant for the analysis of pion–nucleon ...
Jambul Gegelia, Ulf-G. Meißner, Dmitrij Siemens, De-Liang Yao   +3 more
doaj   +1 more source

Determination of the pion-nucleon coupling constant and scattering lengths [PDF]

, 2000
We critically evaluate the isovector GMO sum rule for forward pion-nucleon scattering using the recent precision measurements of negatively charged pion-proton and pion-deuteron scattering lengths from pionic atoms.
A. A. Carter, A. A. Carter, A. Citron, A. Donnachie, A. S. Carroll, A. S. Carroll, A. W. Thomas, A. W. Thomas, B. Loiseau, B. Loiseau, B. Tromborg, B. W. Raichle, C. Caso, D. Bugg, D. Chatellard, D. Davidson, D. Sigg, D. Sigg, D. V. Bugg, E. Matsinos, E. Pedroni, G. Bizard, G. Bizard, G. Fäldt, G. Janssen, G. Janssen, H. Böckman, H. Ch. Schröder, H. Ch. Schröder, I. R. Afnan, J. Haidenbauer, J. R. Bergervoet, J. Rahm, K. F. Liu, K. Holinde, M. E. Sainio, M. L. Goldberger, M. L. Goldberger, M. Lacombe, M. M. Pavan, M. M. Pavan, M. M. Pavan, M. R. Robilotta, N. Fettes, N. Fettes, N. Kaiser, P. A. Guichon, P. Gauron, P. Hauser, R. A. Arndt, R. A. Arndt, R. A. Arndt, R. A. Arndt, R. A. M. Klomp, R. G. E. Timmermans, R. Koch, R. L. Workman, R. L. Workman, R. M. Rockmore, R. Machleidt, R. Machleidt, S. L. Baker, S. R. Beane, S. Weinberg, S. Weinberg, T. E. O. Ericson, T. E. O. Ericson, T. E. O. Ericson, T. E. O. Ericson, T. E. O. Ericson, T. E. O. Ericson, T. J. Devlin, T. Mizutani, U. G. Meissner, V. E. Lyubovitskij, V. G. Zinov, V. M. Kolybasov, V. Stoks, V. Stoks, V. V. Baru, W. R. Gibbs   +80 more
core   +4 more sources

Strategy and Motivation, Rather Than Fatigue, Drive Age‐Related Differences in Sustained Attention Performance: Evidence for Decoupled Beta‐Band Oscillations

European Journal of Neuroscience, Volume 63, Issue 2, January 2026.
Markers of vigilance during sustained attention in both young and older participants: stable performance strategies, increase in subjective fatigue, increase in task‐related beta oscillations and distinct brain‐behaviour links. ABSTRACT Reduced vigilance can be captured as attentional lapses in sustained attention tasks, but just how these lapses ...
Simon Hanzal, Gemma Learmonth, Gregor Thut, Monika Harvey   +3 more
wiley   +1 more source