1,836 research outputs found
Evidence for maximality of strong interactions from LHC forward data
It is important to check if the Froissaron-Maximal Odderon (FMO) approach is
the only model in agreement with the LHC data. We therefore generalized the FMO
approach by relaxing the constraints both in the even-and
odd-under-crossing amplitude. We show that, in spite of a considerable freedom
of a large class of amplitudes, the best fits bring us back to the maximality
of strong interaction. Moreover, if we leave Odderon Regge pole intercept
completely free we find a very good solution for
near -1 in agreement with the result of oddballs spectroscopy in QCD based on
AdS/CFT correspondence.Comment: Section 5 is extended, one reference is replaced, none of results is
change
On the family Stenopsychidae Mart. with a revision of the genus Stenopsyche Mc Lachl. (Trichopt.)
Peer reviewe
Discovery of the Odderon by TOTEM experiments and the FMO approach
This paper is an extended version of the talk by B. Nicolescu at the XLVIII
International Symposium on Multiparticle Dynamics (ISMD2018) at Singapore, 3-7
September, 2018. Theoretical basis and history of the Froissaron and Maximal
Odderon (FMO) approach for elastic and scattering is presented.
Precise formulation of the FMO model at any momentum transfer squared is
given. The model is applied to description and analysis of the experimental
data in a wide interval of energy and . The special attention is
given for the latest TOTEM data at 13 TeV, both at and at and
to their interpretation in the FMO model. It is emphasized that the last TOTEM
results can be considered as clear evidence for the first experimental
observation of the Odderon, predicted theoretically about 50 years ago.Comment: LaTeX2e, 10 pages, 5 figures. To be published in Proceedings of
XLVIII International Symposium on Multiparticle Dynamics (ISMD 2018
Spin-wave spectrum of copper metaborate in the commensurate phase 10K<T<21K
We have investigated the spin-wave spectrum of copper metaborate,
CuBO, by means of inelastic neutron scattering in the commensurate
magnetic phase. We have found two branches of spin-wave excitations associated
with the two magnetic sublattices Cu(A) and Cu(B), respectively. In the
temperature regime , where only the Cu(A) magnetic moments
are ordered, the interaction between the two sublattices is found to be
negligible. With this approximation we have determined the `easy plane'
exchange parameters of the Cu(A) subsystem within standard spin-wave theory.Comment: 4 figure
Henry’s Law Constants and Vapor–Liquid Distribution Coefficients of Noncondensable Gases Dissolved in Carbon Dioxide
The accurate determination of the solubilities of the typical impurity gases present in captured CO2 in the carbon capture, utilization, and storage chain is an essential prerequisite for the successful modeling of the CO2 stream thermodynamic properties. In this paper, Henry’s law constants and the vapor–liquid distribution coefficients of six noncondensable gases, namely, N2, O2, H2, CH4, Ar, and CO, at infinite dilution in liquid CO2 are derived based on published vapor–liquid equilibrium data at temperatures ranging from the triple point (216.59 K) to the critical point (304.13 K) of CO2. The temperature dependence of Henry’s law constants of the six gases is correlated using approximating functions previously proposed for aqueous solutions. A correlation that provides the best fit for the Henry constants data for all the six gases, with the accuracy (absolute average deviation %) of 4.2%, is recommended. For N2, O2, H2, Ar, and CO, the combined standard uncertainty in the derived Henry constants is less than 6%, whereas for CH4, due to a larger deviation between the utilized data, the uncertainty is less than 18%. Analysis of the temperature variation of the vapor–liquid distribution coefficient at infinite dilution shows that when all the six gases are present in the CO2 stream, separation of N2, O2, Ar, and CO from CO2 can be problematic due to their similar volatilities, while the distinct volatilities of H2 and CH4 at lower temperatures make their separation from CO2 easier
Non-existence of normal tokamak equilibria with negative central current
Recent tokamak experiments employing off-axis, non-inductive current drive
have found that a large central current hole can be produced. The current
density is measured to be approximately zero in this region, though in
principle there was sufficient current drive power for the central current
density to have gone significantly negative. Recent papers have used a large
aspect-ratio expansion to show that normal MHD equilibria (with axisymmetric
nested flux surfaces, non-singular fields, and monotonic peaked pressure
profiles) can not exist with negative central current. We extend that proof
here to arbitrary aspect ratio, using a variant of the virial theorem to derive
a relatively simple integral constraint on the equilibrium. However, this
constraint does not, by itself, exclude equilibria with non-nested flux
surfaces, or equilibria with singular fields and/or hollow pressure profiles
that may be spontaneously generated.Comment: 5 pages, 3 figures. Submitted to Physics of Plasmas, Feb. 14, 2003.
Revised Feb. 24, 2003. Vers. 2: revised May 29 to clarify points raised by
referee, add references to recent work. July 18, accepted for publicatio
Unified Model for Small-t and High-t Scattering at High Energies: Predictions at RHIC and LHC
The urgency of predictions in large-t region at LHC stimulated us to present
a unified model of small and high t scattering at high energies. Our model is
based upon a safe theoretical ground: analyticity, unitarity, Regge behavior,
gluon exchange and saturation of bounds established in axiomatic quantum field
theory. We make precise predictions for the behavior of the differential cross
sections at high t, the evolution of the dip-shoulder structure localized in
the region of -t between 0.5 and 0.8 GeV**2 and the radical violation of the
exponential behavior of the first diffraction cone at small t.Comment: 6 pages, 2 table, 7 figures. Misprints are correcte
Forward observables at RHIC, the Tevatron run II and the LHC
We present predictions on the total cross sections and on the ratio of the
real part to the imaginary part of the elastic amplitude (rho parameter) for
present and future pp and pbar p colliders, and on total cross sections for
gamma p -> hadrons at cosmic-ray energies and for gamma gamma -> hadrons up to
sqrt(s)=1 TeV.
These predictions are based on a study of many possible analytic
parametrisations and invoke the current hadronic dataset at t=0. The
uncertainties on total cross sections, including the systematic theoretical
errors, reach 1% at RHIC, 3% at the Tevatron, and 10% at the LHC, whereas those
on the rho parameter are respectively 10%, 17%, and 26%.Comment: 11 pages, 2 figures, LaTeX, presented at the Second International
"Cetraro" Workshop & NATO Advanced Research Workshop "Diffraction 2002",
Alushta, Crimea, Ukraine, August 31 - September 6, 200
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