The model-independent analysis of multi-channel pion-pion scattering and the pion-pion scattering length

2011 ◽  
Vol 219-220 ◽  
pp. 263-266
Author(s):  
Yu.S. Surovtsev ◽  
P. Bydžovský ◽  
T. Gutsche ◽  
R. Kamiński ◽  
V.E. Lyubovitskij ◽  
...  
Keyword(s):  
Scattering Length ◽  
Pion Scattering ◽  
Independent Analysis ◽  
Model Independent

Scattering from laterally heterogeneous vesicles. I. Model-independent analysis

2006 ◽  
Vol 39 (6) ◽  
pp. 791-796 ◽  
Author(s):  
Jeremy Pencer ◽  
Vinicius N. P. Anghel ◽  
Norbert Kučerka ◽  
John Katsaras
Keyword(s):  
Scattering Length ◽  
Model Membranes ◽  
Membrane Composition ◽  
Phase Boundaries ◽  
Contrast Variation ◽  
Independent Manner ◽  
Heterogeneous Membrane ◽  
Independent Analysis ◽  
Model Independent ◽  
Lateral Segregation

This is the first of a series of papers considering the scattering from laterally heterogeneous vesicles. Here, it is shown that contrast variation studies on unilamellar vesicles can be analyzed in a model-independent manner to detect lateral segregation in model membranes. In particular, it is demonstrated that the Porod invariant,Q= \textstyle\int q^{2}I (q )\,{\rm d}q, is related to the scattering length density contrast between compositionally distinct regions in a heterogeneous membrane. The formation of domains and the concomitant identification of phase boundaries as a function of either membrane composition or temperature can therefore be detected in the changes taking place inQ.

scholarly journals Testing lepton flavour universality with (semi)-leptonic $$\varvec{D_{(s)}}$$ decays

2020 ◽  
Vol 80 (2) ◽  
Author(s):  
Robert Fleischer ◽  
Ruben Jaarsma ◽  
Gabriël Koole
Keyword(s):  
Standard Model ◽  
Branching Ratios ◽  
Current Data ◽  
Leptonic Decays ◽  
Independent Analysis ◽  
The Standard Model ◽  
Model Independent ◽  
Pseudo Scalar ◽  
The Impact ◽  
Lepton Flavour

Abstract Data in B-meson decays indicate violations of lepton flavour universality, thereby raising the question about such phenomena in the charm sector. We perform a model-independent analysis of NP contributions in (semi)-leptonic decays of $$D_{(s)}$$D(s) mesons which originate from $$c \rightarrow d \bar{{\ell }} \nu _l$$c→dℓ¯νl and $$c \rightarrow s \bar{{\ell }} \nu _{\ell }$$c→sℓ¯νℓ charged-current interactions. Starting from the most general low-energy effective Hamiltonian containing four-fermion operators and the corresponding short-distance coefficients, we explore the impact of new (pseudo)-scalar, vector and tensor operators and constrain their effects through the interplay with current data. We pay special attention to the elements $$|V_{cd}|$$|Vcd| and $$|V_{cs}|$$|Vcs| of the Cabibbo–Kobayashi–Maskawa matrix and extract them from the $$D_{(s)}$$D(s) decays in the presence of possible NP decay contributions, comparing them with determinations utilizing unitarity. We find a picture in agreement with the Standard Model within the current uncertainties. Using the results from our analysis, we make also predictions for leptonic $$D_{(s)}^+ \rightarrow e^+ \nu _e$$D(s)+→e+νe modes which could be hugely enhanced with respect to their tiny Standard Model branching ratios. It will be interesting to apply our strategy at the future high-precision frontier.

scholarly journals Determining Higgs couplings with a model-independent analysis of h → γγ

2012 ◽  
Vol 2012 (6) ◽  
Author(s):  
Aleksandr Azatov ◽  
Roberto Contino ◽  
Daniele Del Re ◽  
Jamison Galloway ◽  
Marco Grassi ◽  
...  
Keyword(s):  
Independent Analysis ◽  
Model Independent

Model-independent analysis of the reaction π+p → π+π−Δ++

1977 ◽  
Vol 130 (2) ◽  
pp. 309-327 ◽  
Author(s):  
J.T. Donohue ◽  
M. Hontebeyrie ◽  
Y. Leroyer ◽  
C. Meyers
Keyword(s):  
Independent Analysis ◽  
Model Independent

scholarly journals Constraints on new physics in MFV models: A model-independent analysis of ΔF=1 processes

2009 ◽  
Vol 808 (1-2) ◽  
pp. 326-346 ◽  
Author(s):  
Tobias Hurth ◽  
Gino Isidori ◽  
Jernej F. Kamenik ◽  
Federico Mescia
Keyword(s):  
New Physics ◽  
Independent Analysis ◽  
Model Independent
Sign in / Sign up

Export Citation Format

Share Document