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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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125 papers · 1 filter
Baryon resonances in the mean field approach and a simple explanation of the Theta+ pentaquark
Dmitri Diakonov
We suggest to classify baryon resonances as single-quark states in a mean field, and/or as its collective excitations. Identifying the Roper resonance N(1440), the nucleon resonanc…
Sensitivity coefficients to -variation for fine-structure transitions in Carbon-like ions
M. G. Kozlov, I. I. Tupitsyn, D. Reimers
We calculate sensitivity coefficients to -variation for the fine-structure transitions (1,0) and (2,1) within multiplet of the Carbon-like ions C I, N II, O I…
Finite Volume Spectrum of 2D Field Theories from Hirota Dynamics
Nikolay Gromov, Vladimir Kazakov, Pedro Vieira
We propose, using the example of the O(4) sigma model, a general method for solving integrable two dimensional relativistic sigma models in a finite size periodic box. Our starting…
Role of unphysical solution in nucleon QCD sum rules
E. G. Drukarev, M. G. Ryskin, V. A. Sadovnikova
We show that at certain values of QCD condensates the nucleon QCD sum rules with "pole+continuum" model for the hadron spectrum obtain an unphysical solution. This provides constra…
Generalised parton distributions at small x
A. D. Martin, C. Nockles, M. G. Ryskin +2
We justify the practical use of the Shuvaev integral transform approach to calculate the skewed distributions, needed to describe diffractive processes, directly from the conventio…
Comment on "Casimir energies with finite-width mirrors"
Ignat Fialkovsky, Yuriy Pis'mak, Vladimir Markov
We comment on a recent publication [1] by Fosco, Lombardo and Mazzitelli on Casimir energies for material slabs (`finite width mirrors') and report a discrepancy between results ob…
Measurement of the Slope Parameter for the decay with the Crystal Ball detector at the Mainz Microtron (MAMI-C)
S. Prakhov, B. M. K. Nefkens, P. Aguar-Bartolome +68
The dynamics of the decay have been studied with the Crystal Ball multiphoton spectrometer and the TAPS calorimeter. Bremsstrahlung photons produced by the 1.5-GeV elec…
Measurement of , , and production in interactions for between 514 and 750 MeV/
S. Prakhov, B. M. K. Nefkens, V. Bekrenev +17
Differential cross sections and hyperon polarizations have been measured for , , and production in interactions at eight momenta between…
Measurement of the pn -> dK^+K^- total cross section close to threshold
Y. Maeda, M. Hartmann, I. Keshelashvili +20
Measurements of the pn -> p_spec dK^+K^- reaction, where p_spec is a spectator proton, have been undertaken at the Cooler Synchrotron COSY-Juelich by detecting a fast deuteron in c…
Leading transcedental contribution to the four-loop universal anomalous dimension in N=4 SYM
V. N. Velizhanin
We present the result of a full direct component calculation for the term proportional to zeta(5) in the four-loop universal anomalous dimension of the twist-2 operators in N =4 su…
Measurement of the eta->3pi0 Dalitz Plot Distribution with the WASA Detector at COSY
COSY Collaboration
In the first production run of the WASA experiment at COSY, the eta decay into three neutral pions was measured in proton-proton interactions at a proton beam kinetic energy of 1.4…
Diffractive processes at the LHC
A. D. Martin, V. A. Khoze, M. G. Ryskin
We present a model of high energy soft interactions that has multi s- and t-channel components, which has been tuned to describe all the available data. The t-channel componen…
Is the Luttinger liquid a new state of matter?
V. V. Afonin, V. Yu. Petrov
We are demonstrating that the Luttinger model with short range interaction can be treated as a type of Fermi liquid. In line with the main dogma of Landau's theory one can define a…
Dual parametrization of GPDs versus the double distribution Ansatz
Maxim V. Polyakov, Kirill M. Semenov-Tian-Shansky
We establish a link between the dual parametrization of GPDs and a popular parametrization based on the double distribution Ansatz, which is in prevalent use in phenomenological ap…
Neutron diffraction constraint on spin-dependent short range interaction
V. V. Voronin, V. V. Fedorov, I. A. Kuznetsov
The direct constraint on the parameters of short range pseudomagnetic interaction of free neutron with matter is obtained from the recent test experiment on a search for neutron ED…
Search for the lightest scalar top quark in events with two leptons in ppbar collisions at sqrt(s)=1.96 TeV
D0 Collaboration, V. Abazov
We report results of a search for the pair production of the lightest supersymmetric partner of the top quark using 1 fb-1 of data collected by the D0 detector at a ppbar center-of…
Tracking fast small color dipoles through strong gluon fields at the LHC
L. Frankfurt, M. Strikman, M. Zhalov
We argue that the process gamma +A \to J/psi + gap + X at large momentum transfer provides a quick and effective way to test onset of a novel perturbative QCD regime of strong abso…
Forward Physics with Rapidity Gaps at the LHC
Michael Albrow, Albert De Roeck, Valery Khoze +5
A rapidity gap program with great potential can be realized at the Large Hadron Collider, LHC, by adding a few simple forward shower counters (FSCs) along the beam line on both sid…
Search for neutral Higgs bosons at high tan(beta) in the b(h/H/A)->btautau channel
D0 Collaboration, V. Abazov
The first search in ppbar collisions at sqrt(s)=1.96 GeV for the production of neutral Higgs bosons in association with bottom quarks and decaying in two tau leptons is presented.…
Photoproduction of eta-mesons off nuclei for Eg < 2.2 GeV
T. Mertens, I. Jaegle, P. Muehlich +69
Photoproduction of mesons off C, Ca, Nb, and Pb nuclei has been measured with a tagged photon beam with energies between 0.6 and 2.2 GeV. The exper…
First-Forbidden Continuum- and Bound-State beta^- -Decay Rates of Bare 205Hg80+ and 207Tl81+ Ions
M. Faber, A. N. Ivanov, P. Kienle +3
We calculate the decay rates lambda_(beta^-_c) and lambda_(beta^-_b) of the continuum- and bound-state beta^- decays for bare 205Hg80+ and 207Tl81+ ions. For the ratio of the decay…
Linearly polarised photon beams at ELSA and measurement of the beam asymmetry in pi^0-photoproduction off the proton
D. Elsner, B. Bantes, O. Bartholomy +55
At the electron accelerator ELSA a linearly polarised tagged photon beam is produced by coherent bremsstrahlung off a diamond crystal. Orientation and energy range of the linear po…
Photoproduction of mesons off neutrons from a deuteron target
A. V. Anisovich, I. Jaegle, E. Klempt +4
A formalism is developed for the partial wave analysis of data on meson photoproduction off deuterons and applied to photoproduction of and mesons. Different interpretati…
Backward asymmetry measurements in the elastic pion-proton scattering at resonance energies
I. G. Alekseev, N. A. Bazhanov, Yu. A. Beloglazov +16
The asymmetry parameter P was measured for the elastic pion-proton scattering in the very backward angular region of theta_cm ~ 150-170^o at several pion beam energies in the invar…