P. Devensky

Joint Institute for Nuclear Research

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M. Miyajima

Joint Institute for Nuclear Research

Vladimir A. Smirnov

Lomonosov Moscow State University

J. Alitti

CEA Paris-Saclay

E. W. Jenkins

University of Arizona

J. Bouchez

Pitié-Salpêtrière Hospital

E. Malamud

Lawrence Berkeley National Laboratory

Yu. K. Pilipenko

Joint Institute for Nuclear Research

J. Mallet

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

A. Bujak

Institut polytechnique de Grenoble

P. Nomokonov

European Organization for Nuclear Research

Cooperative Institutions

Joint Institute for Nuclear Research

Fermi National Accelerator Laboratory

University of Rochester

Centre National de la Recherche Scientifique

Institut National de Physique Nucléaire et de Physique des Particules

California Institute of Technology

Institute for High Energy Physics

Institute for Theoretical and Experimental Physics

Institute for Nuclear Research

University of Maryland, College Park

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A segmented calorimeter for high-Pt jet experiments

Nuclear Instruments and Methods in Physics Research (1981)

P. Rapp P. Devensky Bruce Brown H. Haggerty R. Abrams

Calorimeter (particle physics)

Fermilab

Granularity

Aperture (computer memory)

10.1016/0029-554x(81)90507-3

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Citations (7)

4He fragmentation induced by 46–400 GeV Protons

Zeitschrift für Physik A Atoms and Nuclei (1985)

N.L. Gorshkova P. Devensky L.A. Kondratyuk В. А. Никитин

Fragmentation

10.1007/bf01881279

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Citations (0)

Energy dependence of the slope of the diffraction maximum for $pi$$sup -$p- elastic scattering

P. Devensky

Source

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Proton-helium elastic scattering from 45 to 400 GeV

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (1981)

A. Bujak P. Devensky С. А. Кузнецов B. Morozov V. Nikitin

The elastic proton-helium differential cross section has been determined for incident laboratory energies from 45 to 400 GeV in the range $0.003\ensuremath{\le}|t|\ensuremath{\le}0.52$ (${\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$ by means of the internal-gas-jet-target technique. The differential cross section drops 4-5 orders of magnitude to the first dip at $|t|\ensuremath{\simeq}0.22$ (${\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$. The shrinkage in the slope of the differential cross section is found to be twice as fast as that in the proton-proton case. The slope parameter at $|t|\ensuremath{\simeq}0$ is described by the formula $b=24+1.13\mathrm{ln}s$, where $b$ is in (${\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{\ensuremath{-}2}$ and $s$ is in ${\mathrm{GeV}}^{2}$. The elastic proton-helium cross section is normalized to the known elastic proton-proton cross section using data taken with a helium and hydrogen mixture as a target. The proton-helium total cross section is determined from the optical theorem. The total cross section rises by 4% between 100 and 400 GeV. Results are presented on the real part of the elastic-scattering amplitude and on the total elastic cross section. The experimental differential cross sections are compared to Glauber-model predictions.

Glauber

Scattering cross-section

Isotopes of helium

Section (typography)

10.1103/physrevd.23.1895

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Citations (32)

π−p elastic scattering at 3.92 GeV/c

Il Nuovo Cimento A (1976)

J. Alitti J. Bouchez P. Devensky G. Di Stefano J. Mallet

Scattering cross-section

Momentum (technical analysis)

10.1007/bf02748692

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Citations (7)

π - p elastic scattering at 3.92 GeV/c.

J. Alitti J. Bouchez P. Devensky Di Stefano G J. Mallet

Source

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Coherent proton diffraction dissociation on helium from 46 to 400 GeV

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (1981)

A. Bujak P. Devensky А. С. Кузнецов B. Morozov V.A. Nikitin

Inclusive coherent proton diffraction dissociation on helium has been measured in the four-momentum transfer and missing-mass region $0.04<|t|<0.40$ (${\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$, ${{M}_{X}}^{2}<10$ ${\mathrm{GeV}}^{2}$ and for incident proton beam momenta from 46 to 400 GeV/c. We find that the differential cross section $\frac{{d}^{2}\ensuremath{\sigma}}{\mathrm{dt}d{{M}_{X}}^{2}}$ varies slowly with energy, reveals a pronounced peak at ${{M}_{X}}^{2}\ensuremath{\simeq}2$ ${\mathrm{GeV}}^{2}$, and at large masses behaves approximately as $\frac{1}{{{M}_{X}}^{2}}$. The cross section falls exponentially as $|t|$ increases, with a large slope parameter at small momentum transfers and a substantially smaller one at large $|t|$ values, with no clear dip between the two regions as seen in elastic scattering. We compare the experimental $t$ distributions to Glauber-model predictions and find the data provide a sensitive test of the assumptions on the details of the elementary proton diffraction-dissociation amplitudes and on the total cross sections of the diffractively produced states.

Glauber

Momentum transfer

10.1103/physrevd.23.1911

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Citations (4)