Date

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High-energy Photoproduction of $\pi^+ \pi^- \pi^0$, $K^+ K^-$, and $P \bar{P}$ States

Busenitz, J. ; Olszewski, C. ; Callahan, P. ; et al.
Phys.Rev.D 40 (1989) 1-21, 1989.
Inspire Record 285137 DOI 10.17182/hepdata.23148

We report measurements from elastic photoproduction of ω's on hydrogen for photon energies between 60 and 225 GeV, elastic φ photoproduction on hydrogen between 35 and 165 GeV and on deuterium between 45 and 85 GeV, elastic photoproduction on deuterium of an enhancement at 1.72 GeV/c2 decaying into K+K−, and elastic and inelastic photoproduction on deuterium of pp¯ pairs.

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Measurement of the Rate of Increase of Neutrino Cross-Sections with Energy

Blair, R. ; Barish, B.C. ; Chu, Y.K. ; et al.
Phys.Rev.Lett. 51 (1983) 343-346, 1983.
Inspire Record 194360 DOI 10.17182/hepdata.20507

The energy dependence of the cross section for neutrino- and antineutrino-nucleon charged-current interactions has been determined from data taken in Fermilab's dichromatic neutrino beam. σνE=(0.669±0.003±0.024)×10−38 cm2/GeV and σν¯E=(0.340±0.003±0.02)×10−38 cm2/GeV are found. These results are higher than some previous measurements.

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INCLUSIVE PRODUCTION OF K*+- (890) AND SIGMA+- (1385) RESONANCES IN ANTI-P P INTERACTIONS AT 14.75-GEV/C

Canter, J. ; Chang, C.C ; Dao, F.T. ; et al.
Phys.Rev.D 20 (1979) 1029-1036, 1979.
Inspire Record 144992 DOI 10.17182/hepdata.24210

The inclusive and semi-inclusive cross sections for K*±(890) and Σ±(1385) resonances are determined in p¯p interactions at 14.75 GeV/c. They account for a large fraction of the KS0 and Λ0 produced. The K*-resonance production also affects the low-pT2 distribution of inclusive KS0. The x distributions of the resonance production are studied in terms of a simple quark-recombination model.

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Anti-muon-neutrino Nucleon Charged Current Total Cross-Section for 5-GeV to 250-GeV

Taylor, G.N. ; Cence, R.J. ; Harris, F.A. ; et al.
Phys.Rev.Lett. 51 (1983) 739-742, 1983.
Inspire Record 196372 DOI 10.17182/hepdata.20476

The ν¯μ charged-current total cross section has been measured with the Fermilab 15-ft bubble chamber plus the external muon identifier and internal "picket fence." Beam monitoring information used for the flux calculation was obtained from Blair et al., whose detector operated in the same dichromatic beam. The present result, averaged over ν¯μ energies from 5 to 250 GeV, is σE=(0.340±0.019±0.022)×10−38 cm2/(GeV nucleon) for an isoscalar target.

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Measurement of the SU(3) Symmetry Violation in the Quark Jet

The Fermilab-Serpukhov-Moscow-Michigan collaboration Ammosov, V.V. ; Amrakhov, A.H. ; Denisov, A.G. ; et al.
Phys.Lett.B 93 (1980) 210-212, 1980.
Inspire Record 152994 DOI 10.17182/hepdata.42575

We have used the ratio between the production rates of $K^0$'s and $π^−$'s in antineutrino-nucleon interactions in the Fermilab 15 ft bubble chamber to measure the size of the SU (3) symmetry violation in the production of quark-antiquark pairs to be 0.27 ± 0.04. This value is significantly larger than the value obtained from a recent ep experiment. There is no apparent dependence of the $K^0$/$π^−$ ratio with $W^2 , Q ^2 , x_b$ or $p_T^2$ .

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Charged Current Events with Neutral Strange Particles in High Energy Antineutrino Interactions

Ammosov, V.V. ; Denisov, A.G. ; Ermolov, P.F. ; et al.
Nucl.Phys.B 177 (1981) 365-381, 1981.
Inspire Record 153884 DOI 10.17182/hepdata.42576

The results of a study of strange particle production in charged current $\bar{\nu}_{\mu} N$ interactions in the Fermilab 15 ft bubble chamber filled with a heavy $Ne-H_2$ mixture are presented. Production rates and average multiplicities of $K^0$'s and Λ's as functions of W 2 and Q 2 are given. The experimental data agree well with the quark-parton model predictions if a yield of 0.06 ± 0.02 of $K^0$'s and Λ's from charm production is included. Upper limits for D-meson production are given and the shape of the charmed quark fragmentation function is discussed. Inclusive production of the K ∗ (890) and Σ(1385) resonances is measured and it is shown that only about 5% of the K 0 mesons and Λ hyperons results from resonance decays. Relative production rates of neutral strange particles on proton and neutron targets are studied.

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VECTOR omega (783) AND rho (770) MESONS PRODUCTION IN ANTI-NEUTRINOS NEUTRAL CURRENT INTERACTIONS

The Fermilab-Serpukhov-Moscow-Michigan collaboration Ammosov, V.V. ; Denisov, A.G. ; Gapienko, G.S. ; et al.
IFVE-81-175, 1981.
Inspire Record 169737 DOI 10.17182/hepdata.41297

None

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Quark Jets from Antineutrino Interactions II: Inclusive Particle Spectra and Multiplicities in the Quark Jets

Ammosov, V.V. ; Denisov, A.G. ; Gapienko, G.S. ; et al.
Nucl.Phys.B 203 (1982) 1-15, 1982.
Inspire Record 156746 DOI 10.17182/hepdata.41254

We present results on inclusive particle production in the antineutrino charged current induced hadron jets observed in the Fermilab 15 ft bubble chamber. Fractional energy distributions, particle ratios and average multiplicities of the hadrons in the jets are measured. Ratios between the inclusive production rates of different mesons in the jets are studied to seek evidence for the d-quark origin of the observed hadrons. Good over-all agreement with the hypothesis of d-quark fragmentation with universal fragmentation functions obeying isospin systematics is established.

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INCLUSIVE CHARGED CURRENT ANTI-NEUTRINO - NUCLEON INTERACTIONS AT HIGH-ENERGIES

The Fermilab-Serpukhov-Moscow-Michigan collaboration Ammosov, V.V. ; Denisov, A.G. ; Gapienko, G.S. ; et al.
Nucl.Phys.B 199 (1982) 399-423, 1982.
Inspire Record 167339 DOI 10.17182/hepdata.41220

We present results on the experimental study of inelastic charged-current antineutrino-nucleon scattering in the energy range of 10–200 GeV. The data sample, consisting of about 6500 antineutrino-induced events, was obtained in the Fermilab 15 ft bubble chamber filled with a heavy neon-hydrogen mixture. The differential cross sections for ν μ N interactions are presented in terms of scaling variables x and y . The structure functions F 2 ν and xF 3 ν have been evaluated as functions of x and E ν . A deviation from the scaling hypothesis, similar to those found in other experiments on inelastic lepton-nucleon scattering, has been observed. The data are interpreted in the framework of the quark-parton model. Quark and antiquark distributions and their energy dependences are presented.

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Observation of $\mu^+ e^+$ Events in Anti-neutrino - Nucleon Interactions

The Fermilab-Serpukhov-Moscow-Michigan collaboration Ammosov, V.V. ; Denisov, A.G. ; Ermolov, P.F. ; et al.
Phys.Lett.B 106 (1981) 151-154, 1981.
Inspire Record 166059 DOI 10.17182/hepdata.41257

The first observation of μ + e + events produced in antineutrino interactions using the Fermilab 15 ft bubble chamber is reported. The relative yield of μ + e + events is (4.8 −3.2 +5.3 ) × 10 −4 of all charged-current events with antineutrino energy greater than 10 GeV. The observed V 0 rate is 1.0 −1.0 +1.2 per μ + e + event. Possible sources of these events are discussed.

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