Results 51 to 60 of about 196,051 (181)
Comment on “Primary Dimensions”
European Physical Journal C: Particles and FieldsWe show that the concept of primary dimensions, first introduced in [1] as an organizing principle for chiral Lagrangians, is inconsistent. Although this had been pointed out already in [2], the notion of primary dimensions has re-appeared in recent ...
G. Buchalla +3 more
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The pion mass and decay constant at three loops in two-flavour chiral perturbation theory
Journal of High Energy Physics, 2017 A calculation of the pion mass and decay constant at NNNLO in two-flavour chiral perturbation theory is presented. The results are cross-checked by using both the exponential and square root parametrizations of the Goldstone matrix field, as well as by ...
Johan Bijnens, Nils Hermansson Truedsson
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Heating neutron stars with GeV dark matter
Journal of High Energy Physics, 2020 An old neutron star (NS) may capture halo dark matter (DM) and get heated up by the deposited kinetic energy, thus behaving like a thermal DM detector with sensitivity to a wide range of DM masses and a variety of DM-quark interactions.
Wai-Yee Keung +2 more
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Chiral Lagrangian with confinement from the QCD Lagrangian [PDF]
Physical Review D, 2002 An effective Lagrangian for the light quark in the field of a static source is derived systematically using the exact field correlator expansion. The lowest Gaussian term is bosonized using nonlocal colorless bosonic fields and a general structure of effective chiral Lagrangian is obtained containing all set of fields.
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From quarks to nucleons in dark matter direct detection
Journal of High Energy Physics, 2017 We provide expressions for the nonperturbative matching of the effective field theory describing dark matter interactions with quarks and gluons to the effective theory of nonrelativistic dark matter interacting with nonrelativistic nucleons.
Fady Bishara +3 more
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Generalized positivity bounds on chiral perturbation theory
Journal of High Energy Physics, 2020 Recently, a new set of positivity bounds with t derivatives have been discovered. We explore the generic features of these generalized positivity bounds with loop amplitudes and apply these bounds to constrain the parameters in chiral perturbation theory
Yu-Jia Wang +3 more
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Electroweak chiral Lagrangian and new precision measurements [PDF]
Physical Review D, 1993 21 pages, LaTex, 2 figures (not included), YCTP-P7 ...
Appelquist, T., Wu, G.
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Journal of High Energy Physics, 2017 We demonstrate that dispersion theory allows one to deduce crucial information on πη scattering from the final-state interactions of the light mesons visible in the spectral distributions of the decays B ¯ d 0 → J / ψ π 0 η , K + K − , K 0 K ¯ 0 ...
M. Albaladejo +4 more
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On 1D, N $$ \mathcal{N} $$ = 4 supersymmetric SYK-type models. Part I
Journal of High Energy Physics, 2021 Proposals are made to describe 1D, N $$ \mathcal{N} $$ = 4 supersymmetrical systems that ex- tend SYK models by compactifying from 4D, N $$ \mathcal{N} $$ = 1 supersymmetric Lagrangians involving chiral, vector, and tensor supermultiplets.
S. James Gates +2 more
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Effective Lagrangians and chiral random matrix theory [PDF]
Physical Review D, 1995 Recently, sum rules were derived for the inverse eigenvalues of the Dirac operator. They were obtained in two different ways: i) starting from the low-energy effective Lagrangian and ii) starting from a random matrix theory with the symmetries of the Dirac operator. This suggests that the effective theory can be obtained directly from the random matrix
Halasz, M. A., Verbaarschot, J. J. M.
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