Subleading Reggeons in deep inelastic diffractive scattering at DESY HERA

1997 ◽  
Vol 55 (5) ◽  
pp. 3209-3211 ◽  
Author(s):  
K. Golec-Biernat ◽  
J. Kwieciński
Keyword(s):  
Diffractive Scattering

scholarly journals Exclusive heavy vector meson electroproduction to NLO in collinear factorisation

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
C. A. Flett ◽  
J. A. Gracey ◽  
S. P. Jones ◽  
T. Teubner
Keyword(s):  
Phase Space ◽  
Vector Meson ◽  
Heavy Quarkonia ◽  
Diffractive Scattering ◽  
Meson Electroproduction

Abstract We compute the exclusive electroproduction, γ*p → Vp, of heavy quarkonia V to NLO in the collinear factorisation scheme, which has been formally proven for this process. The inclusion of an off-shell virtuality Q2 carried by the photon extends the photoproduction phase space of the exclusive heavy quarkonia observable to electroproduction kinematics. This process is relevant for diffractive scattering at HERA and the upcoming EIC, as well as at the proposed LHeC and FCC.

DIFFRACTIVE REFLECTION AND SCATTERING OF ULTRASONIC WAVES. THEIR INFLUENCE ON TORSION-PENDULUM MEASUREMENTS OF SOUND INTENSITY

1930 ◽  
Vol 3 (6) ◽  
pp. 491-509 ◽  
Author(s):  
R. W. Boyle ◽  
J. F. Lehmann
Keyword(s):  
Wave Train ◽  
Sound Intensity ◽  
Ultrasonic Waves ◽  
Special Importance ◽  
Torsion Pendulum ◽  
Sound Waves ◽  
Diffractive Scattering ◽  
Light Waves ◽  
Small Obstacle ◽  
Diffractive Reflection

Light waves are too short and ordinary sound waves generally too long to permit experimental work on diffraction and scattering by a single small obstacle. An opportunity for such work however is presented in the case of ultrasonic waves.This paper describes an experimental investigation on the factors which determine the diffractive reflection and scattering of an ultrasonic wave train by plane circular opaque discs, and discusses the results. These are of special importance in the measurement of sound energy intensity by the torsion-pendulum method, for such measurements should always be corrected to allow for the effect of diffractive scattering of the energy by the measuring-pendulum vane. The correction factor will depend on the size and form of the pendula vanes employed and for circular vanes can be obtained directly from such curves as are shown in this paper as results of the investigation.

scholarly journals Proton–proton, pion–proton and pion–pion diffractive collisions at ultrahigh energies

2014 ◽  
Vol 29 (15) ◽  
pp. 1450096 ◽  
Author(s):  
V. V. Anisovich ◽  
K. V. Nikonov ◽  
V. A. Nikonov ◽  
J. Nyiri
Keyword(s):  
Cross Sections ◽  
Constituent Quark ◽  
Energy Scale ◽  
Proton Proton ◽  
Black Disk ◽  
Total Cross Sections ◽  
Diffractive Dissociation ◽  
Relative Contribution ◽  
Diffractive Scattering ◽  
Dissociation Cross Section

The LHC energies are those at which the asymptotic regime in hadron–hadron diffractive collisions (pp, πp, ππ) might be switched on. Based on results of the Dakhno–Nikonov eikonal model which is a generalization of the Good–Walker eikonal approach for a continuous set of channels, we present a picture for transformation of the constituent quark mode to the black disk one. In the black disk mode [Formula: see text], we have a growth of the logarithm squared type for total and elastic cross-sections, σ tot ~ ln 2 s and σ el ~ ln 2 s and [Formula: see text]-scaling for diffractive scattering and diffractive dissociation of hadrons. The diffractive dissociation cross-section grows as σD ~ ln s, σDD ~ ln s, and their relative contribution tends to zero: σD/σ tot → 0, σDD/σ tot → 0. Asymptotic characteristics of diffractive and total cross-sections are universal, and this results in the asymptotical equality of cross-sections for all types of hadrons (the Gribov universality). The energy scale for switching on the asymptotic mode is estimated for different processes.

Diffractive scattering in the dual model

1975 ◽  
Vol 86 (3) ◽  
pp. 479-525 ◽  
Author(s):  
Chan Hong-Mo ◽  
J.E. Paton ◽  
Tsou Sheung Tsun
Keyword(s):  
Dual Model ◽  
Diffractive Scattering

scholarly journals High-Beta Optics and Running Prospects

Instruments ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 22
Author(s):  
Helmut Burkhardt
Keyword(s):  
Low Energy ◽  
Proton Scattering ◽  
General Introduction ◽  
Interference Region ◽  
Diffractive Scattering ◽  
Scattering Measurements ◽  
Forward Proton ◽  
History Of ◽  
High Beta

Dedicated high-beta optics are used to make forward proton scattering measurements possible at the LHC. Following a short general introduction and history of special high-beta optics and running conditions, we describe the two types of special high-beta runs planned for 2018. A run at top energy at β y * = 90 m for elastic and diffractive scattering, and a low energy run to measure the rho-parameter in the Coulomb interference region.

Systematics of hadron-proton diffractive scattering at high energies

1990 ◽  
Vol 47 (3) ◽  
pp. 377-396 ◽  
Author(s):  
C. Furget ◽  
M. Buenerd ◽  
P. Valin
Keyword(s):  
High Energies ◽  
Diffractive Scattering
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