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Single and Double Diffraction Dissociation in K+ p Interactions at 32-GeV/c

The French-Soviet & CERN-Soviet collaborations Saudraix, J. ; Denegri, D. ; Loret, M. ; et al.
SACLAY-DPhPE 77-19, 1977.
Inspire Record 121747 DOI 10.17182/hepdata.19296

None

1 data table
Table 1

No description provided.


Production of x (2.85) Particles in Charge Exchange Reaction pi- p --> Chi n, Chi --> 2 gamma at 40-GeV/c

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K. ; Bertolucci, E. ; et al.
Sov.J.Nucl.Phys. 27 (1978) 524, 1978.
Inspire Record 122184 DOI 10.17182/hepdata.19014

None

1 data table
Table 1

No description provided.


Inclusive Production of $\pi^{\pm}$, $K^{\pm}$, $p$, $\bar{p}$ in High-Energy pp Collisions

Johnson, J.R. ; Kammerud, R. ; Ohsugi, T. ; et al.
Phys.Rev.Lett. 39 (1977) 1173-1176, 1977.
Inspire Record 121763 DOI 10.17182/hepdata.4502

We have measured the single-particle inclusive cross sections for p+p→π±+X, K±+X, p+X, p¯+X in the low-p⊥ region (≲ 1.5 GeV/c) as a function of the radial scaling variable XR in p−p collisions at 100, 200, and 400 GeV at Fermilab. The measured π+π− and K+K− ratios are shown to be remarkably similar to the same ratios which have recently been measured at large p⊥ at 90° in the center-of-mass system.

98 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Meson Production by Delta Exchange in pi- p Interactions at 4-GeV/c

Scharre, D.L. ; Chapman, J.W. ; Ely, R.P. ; et al.
Phys.Rev.D 17 (1978) 2853, 1978.
Inspire Record 121388 DOI 10.17182/hepdata.24432

A streamer-chamber spectrometer is triggered by fast forward protons from 4-GeV/c π−p interactions at the Bevatron. Meson-resonance production in the backward, Iu=32 exchange reactions π−p→pM− are studied, where M− refers to π−, ρ−, A1−, A2−, and B−. Elastic scattering and ρ− production are observed and discussed in detail. No backward A1−, A2−, or B− production is observed at the level of approximately 5 βb.

5 data tables
Table 1

Axis error includes +- 15/15 contribution.

Table 2

No description provided.

Table 3

Axis error includes +- 15/15 contribution.

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Neutral Strange Particle Production in anti-Proton-Proton Reactions at 3.0-GeV/c

Jacobs, S.M. ; Kirsch, L.E. ; Moore, S.C. ; et al.
Phys.Rev.D 17 (1978) 1187, 1978.
Inspire Record 5857 DOI 10.17182/hepdata.24452

The reactions p¯p→V0+neutrals were studied in a multiparticle spectrometer at 3.0 GeV/c incident momentum, with a sensitivity of about 150 events/μb. Differential cross sections and polarization of the Λ¯ for the final states Λ¯(Λ) and Λ¯(Σ0) are reported and compared with theoretical models. Differential cross sections of the K0 in K0[K*(890)] and the Λ in Λ(Λ¯+Σ¯0) are also measured. Upper limits of a few μb MeV are obtained for the formation of narrow resonances decaying into V0+neutrals in the mass interval 2.74-2.80 GeV/c2.

5 data tables
Table 1

FORWARD HEMISPHERE TOTAL CROSS SECTIONS NOT INCLUDING CHARGE CONJUGATE REACTIONS. CORRECTED FOR DECAY BRANCHING RATIOS AND FOR BACKGROUNDS.

Table 2

No description provided.

Table 3

No description provided.

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Production of Dimuons in 16-GeV/c pi p Interactions

Bunnell, K. ; Duong-van, Minh ; Kogan, E. ; et al.
Phys.Rev.Lett. 40 (1978) 136, 1978.
Inspire Record 121404 DOI 10.17182/hepdata.20920

A clear, prompt dimuon signal has been observed in a low-statistics streamer-chamber experiment with 16-GeV/c πp interactions. The good mass resolution makes it possible to identify the contributions from ρ and ω decays and η and ω Dalitz decays. An excess of events is observed in the mass region ∼400-600 MeV which is not accounted for by the above-mentioned decays.

1 data table
Table 1

The data with PI+- beam obtained from the combination of PI+ and PI- beams.


Inclusive Baryon Production in e+ e- Annihilation

Piccolo, M. ; Peruzzi, I. ; Luke, D. ; et al.
Phys.Rev.Lett. 39 (1977) 1503, 1977.
Inspire Record 121395 DOI 10.17182/hepdata.20965

The inclusive production of antiprotons and Λ's in e+e− annihilation has been measured as a function of the c.m. energy in the range 3.7-7.6 GeV. We find that the baryon cross section has a behavior different from the total hadronic production. Our results show a rapid rise in the ratio σp¯σμμ between 4.4 and 5 GeV, consistent with what would be expected from charmed baryon production. Λ¯ production is 10-15% of p¯ production at all energies.

1 data table
Table 1

NOT INCLUDING SYSTEMATIC ERRORS.


Charged Hadron Multiplicities and Inclusive pi- Distributions in Inelastic e p Scattering

Chen, C.K. ; Knowles, J. ; Martin, D. ; et al.
Nucl.Phys.B 133 (1978) 13-37, 1978.
Inspire Record 121936 DOI 10.17182/hepdata.35153

Electroproduction of hadrons is studied in the kinematic region W < 2.8 GeV and 0.3 < Q 2 < 1.4 GeV 2 using the DESY streamer chamber. Prong cross sections, charged-particle multiplicities and inclusive π − distributions are presented. The average charged multiplicity is found to be independent of Q 2 in the Q 2 range studied here; however it is lower than in photoproduction. The fraction of forward π − is found to be significantly less in electroproduction than in photoproduction. The 〈 p ⊥ 2 〉 for inclusive π − is, for all x values, similar to that found in photoproduction.

15 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Production of A20 and omega-prime (1675) in the Reaction pi+ p --> Delta++ pi+ pi- pi0 at 15-GeV/c

Baltay, C. ; Cautis, C.V. ; Kalelkar, M. ;
Phys.Rev.Lett. 40 (1978) 87, 1978.
Inspire Record 5845 DOI 10.17182/hepdata.37296

We present the results of a detailed study of ω′(1675) production in the reaction π+p→Δ++π+π−π0 from a high-statistics bubble-chamber experiment at 15 GeV/c. We have measured the mass, width, and cross section as well as differential cross section and spin density matrix elements and compare then to A20 production in the same reaction. We show clear evidence for the resonant phase increase of the 3− (ρπ)fI=0 amplitude with ω′(1675) production.

4 data tables
Table 1

No description provided.

Table 2

NOTE THAT THE SCALES FOR THE DIFFERENTIAL CROSS SECTION ARE WRONG IN THE PUBLISHED FIGURE.

Table 3

No description provided.

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The Cross-Section for the Production of Massive electron Pairs and the Upsilon (9.5-GeV) in Proton Proton Collisions at the CERN ISR

Cobb, J.H. ; Iwata, S. ; Palmer, R.B. ; et al.
Phys.Lett.B 72 (1977) 273-277, 1977.
Inspire Record 122577 DOI 10.17182/hepdata.27504

Measurements of the cross section for the production of electron pairs with invariant masses between 4 and 8.7 GeV are presented as a function of the centre-of-mass energy ( s = 28 to s = 62 GeV ) of the colliding proton beams. A significant excess of events is observed in the region 8.7 to 10.3 GeV; these are ascribed to the ϒ(9.5 GeV) resonances and estimates of the production cross sections are given.

2 data tables
Table 1

Axis error includes +- 40/40 contribution (Due to the uncertainty in efficiency).

Table 2

Axis error includes +- 40/40 contribution (Due to the uncertainty in efficiency).