Dickinson, B.
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Precise Coherent $K_S$ Regeneration Amplitudes for C, Al, Cu, {SN} and Pb Nuclei From 20-{GeV}/$c$ to 140-{GeV}/$c$ and Their Interpretation

Gsponer, A. ; Hoffnagle, J. ; Molzon, W.R. ; et al.
Phys.Rev.Lett. 42 (1979) 13, 1979.
Inspire Record 6964 DOI 10.17182/hepdata.20800

We have determined the coherent KS regeneration amplitudes on various nuclei, from 20 to 140 GeV/c, using a particularly systematics-free technique. Our results are well represented by |(f−f¯)k|=2.23A0.758p−0.614 mb. This p dependence corresponds to an effective "nuclear" intercept ``αω(0)''=0.386±0.009, whereas the elementary value is αω(0)=0.44±0.01. Comparisons are made with data below 25 GeV/c, and with optical-model predictions. The latter work only if "αω(0)" is postulated to hold for the elementary amplitudes.

1 data table
Table 1

No description provided.


Energy Dependence of the Spin Spin Correlation Parameter C(ll) = (L, L : O, O) in $p p$ Elastic Scattering Around $\theta$ (Center-of-mass) = 90-degrees

Auer, I.P. ; Beretvas, A. ; Colton, E. ; et al.
Phys.Rev.Lett. 41 (1978) 1436, 1978.
Inspire Record 131077 DOI 10.17182/hepdata.20865

We have measured the spin-spin correlation parameter CLL=(L, L;0, 0) in p−p elastic scattering around θc.m.=90° from plab=1.0 to 3.0 GeV/c. We observe a rapid energy dependence in CLL and describe our interpretation of the results.

13 data tables
Table 1

No description provided.

Table 2

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Table 3

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Proton - Helium Elastic Scattering From 40-{GeV} to 400-{GeV}

Jenkins, E. ; Bujak, A. ; Kuznetsov, A. ; et al.
CONF-780826-9, 1978.
Inspire Record 133837 DOI 10.17182/hepdata.24088

None

7 data tables
Table 1

No description provided.

Table 2

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Table 3

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MESON RESONANCE PRODUCTION IN p p INTERACTIONS AT s**(1/2) OF 53-GeV

Alder, J.C. ; Block, M. ; Bohm, A. ; et al.
PRINT-78-0819 (CERN), 1978.
Inspire Record 131140 DOI 10.17182/hepdata.47305

None

1 data table
Table 1

No description provided.


A2- Production in the Reaction $\pi^- p \to K^- K^0_S p$ at 9.8-{GeV} and 18.8-{GeV}

The CERN-Munich collaboration Chabaud, V. ; Hyams, B. ; Jones, C. ; et al.
Nucl.Phys.B 145 (1978) 349-366, 1978.
Inspire Record 131631 DOI 10.17182/hepdata.34875

Results of two spark chamber experiments on A 2 − production in the reaction π − p → K − K S 0 (→ π + π − )p at 9.8 and 18.8 GeV are presented. Decay angular distributions and differential cross sections are given, and the energy dependence of the cross section σ [ π − p → A 2 − (→ K − K 0 )p] is compared with results from π − p → A 2 − (→ 3 π )p.

4 data tables
Table 1

FITS WITH CONSTANT BACKGROUNDS. A TWO-PARAMETER LINEAR BACKGROUND GIVES MUCH LARGER ERRORS.

Table 2

INTEGRATED OVER M(K AK) = 1.20 TO 1.42 GEV.

Table 3

No description provided.

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Partial Wave Analysis of $\bar{K} N \to \bar{K}^* N$ Between 1830-{MeV} and 2170-{MeV} Center-of-mass Energy Including New Data Below 1960-{MeV}

The Rutherford-London collaboration Cameron, W. ; Franek, B. ; Gopal, G.P. ; et al.
Nucl.Phys.B 146 (1978) 327-367, 1978.
Inspire Record 131336 DOI 10.17182/hepdata.34833

We present data for the single-pion production final states K 0 π − p, K − π 0 p and K − π + n from K − p interactions at 11 c.m. energies between 1775 and 1957 MeV. Using the K 0 π − p events the branching ratio (K s 0 → π + π − /K s 0 → all) has been determined to be 0.657 ± 0.011. New values have also been determined for the masses and widths of the K ∗0 (890) and the K ∗− (8990). These give a value of 1.5 ± 1.5 MeV for the electromagnetic mass splitting of the K ∗ . Differential cross sections and the spin-density matrix elements have been extracted for the reactions K − p → K ∗− p and K − p → K ∗0 n . An energy dependent partial-wave analysis of the K ∗ N channel from threshold up to 2170 MeV c.m. energy has been carried out yielding values for 17 resonant amplitudes for the expected Y ∗ 's and a new resonance, the S01(2030).

11 data tables
Table 1

No description provided.

Table 2

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Analysis of the Charge Exchange Reaction $p p \to (p \pi^+$) ($p \pi^-$) and of $\Delta^{++}$ Delta0 Production at the {CERN} {ISR}

Goggi, G. ; Cavalli-Sforza, M. ; Conta, C. ; et al.
Nucl.Phys.B 143 (1978) 365-394, 1978.
Inspire Record 131628 DOI 10.17182/hepdata.34885

We present the results of a systematic analysis of charge-exchange double dissociation in proton-proton collisions at the CERN Intersecting Storage Rings. The data, obtained with the Split-Field Magnet detector, cover the entire ISR energy range between s = 23 GeV and s = 63 GeV at five standard energies.

4 data tables
Table 1

CHARGE EXCHANGE DOUBLE DIFFRACTION DISSOCIATION OF PROTONS. THESE CROSS SECTIONS WERE REPORTED IN G. GOGGI ET AL., PL 72B, 265 (1977).

Table 2

No description provided.

Table 3

THE SEMI INCLUSIVE DENSITY MATRICES ARE ALSO GIVEN (P P --> DEL++ P PI- + DEL0 P PI+).

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Backward Production of the $B$ Meson in $K^- p$ Interactions at 4.2-{GeV}/$c$

The Amsterdam-CERN-Nijmegen-Oxford collaboration Gavillet, P. ; Dionisi, C. ; Gurtu, A. ; et al.
Phys.Lett.B 78 (1978) 158-161, 1978.
Inspire Record 131673 DOI 10.17182/hepdata.27430

The backward production of the B(1235) meson is studied in the reaction K − p → Σ − π + ω . This reaction is observed in the final state Σ − π + π + π − π 0 . A π + ω mass enhancement is visible in the region of the B meson for events with small | u |K − → Σ − ) squared four-momentum transfer. The properties of the enhancement agree with those of the B meson. The cross section for K − p → Σ − B + at 4.15 GeV c incident K − momentum is (3.2 ± 0.5) μb . The backward production of the B meson is compared with similar baryon exchange productions of the A 1 and C(Q 1 ) axial vector mesons observed in the same experiment.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Inclusive $\pi^+$ to $\pi^-$ ratios and quark distributions of pions and nucleons

Eisenberg, Y. ; Haber, B. ; Hochman, D. ; et al.
Phys.Lett.B 83 (1979) 127, 1979.
Inspire Record 131271 DOI 10.17182/hepdata.27334

The ratio R of inclusive π + π − production at low transverse momenta is measured in π + n and pn interactions at 195 GeV/ c . R ( 1 R ) in the proton (neutron) fragmentation region increases with Feynman- x and is smaller than R from π + fragmentation. The results agree with a quark-quark scattering model originally proposed for “hard” processes and disagree with a modified version of the model which includes gluon scattering.

6 data tables
Table 1

No description provided.

Table 2

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Table 3

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New Results on Nucleon Double Diffraction at the {CERN} {ISR}

Goggi, G. ; Cavalli-Sforza, M. ; Conta, C. ; et al.
Phys.Lett.B 79 (1978) 165-169, 1978.
Inspire Record 131629 DOI 10.17182/hepdata.27380

Results on exclusive double diffraction dissociation in (N π ) and (N ππ ) final states are reported for neutron-neutron interactions at √ s = 26.4 GeV and for the proton-neutron interactions at √ s = 37.2 GeV. The data have been obtained at the CERN intersecting storage rings using split field magnet detector with proton-deuteron and deuteron-deuteron colliding beams. Factorization is shown to be verified to a very high degree in both mass- and t -differential cross-sections. The data confirm the previously observed rise in the proton-proton double diffractive cross-section as a function of c.m. energy.

3 data tables
Table 1

26.6 GEV/C INCIDENT BEAMS.

Table 2

26.6 GEV/C INCIDENT BEAMS.

Table 3

No description provided.