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Radiative Width of the $K^*$+ (890)

Chandlee, C. ; Berg, D. ; Cihangir, S. ; et al.

Phys.Rev.Lett. 51 (1983) 168, 1983.

Inspire Record 13393 DOI 10.17182/hepdata.20522

Coherent production of Kπ systems observed in the excitation of 200-GeV/c positive kaons on nuclear targets has been analyzed, including both electromagnetic and strong contributions, to yield a new value for the radiative width for the process K*+(890)→K+γ of 51 ± 5 keV.

1 data table

Table 1

No description provided.

CHARM PHOTOPRODUCTION CROSS-SECTION AT 20-GeV

Abe, K. ; Bacon, T.C. ; Ballam, Joseph ; et al.

Phys.Rev.Lett. 51 (1983) 156, 1983.

Inspire Record 189662 DOI 10.17182/hepdata.20508

Forty-seven charm events have been observed in an exposure of the SLAC Hybrid Facility bubble chamber to a 20-GeV backward-scattered laser beam. Thirty-seven events survive all the necessary cuts imposed. Based on this number the total charm cross section is calculated to be 63−28+33 nb.

1 data table

Table 1

No description provided.

PRIMAKOFF PRODUCTION OF THE B+ (1235) MESON

Collick, B. ; Heppelmann, S. ; Joyce, T. ; et al.

Phys.Rev.Lett. 53 (1984) 2374-2377, 1984.

Inspire Record 215103 DOI 10.17182/hepdata.20414

We have measured the coherent nuclear production of π+ω systems at 202.5 GeV. This final state is dominated by the B+(1235) meson with a measured mass and full width of 1.271 ± 0.011 GeV and 0.232 ± 0.029 GeV, respectively. A radiative width of 230 ± 60 keV was extracted for the process B+(1235)→π+γ.

1 data table

Table 1

DATA REQUESTED FROM THE AUTHORS.

Nuclear Enhancement of pi0 and eta mesons Produced at Large Transverse Momenta

Povlis, J. ; Biel, J. ; Bromberg, C. ; et al.

Phys.Rev.Lett. 51 (1983) 967, 1983.

Inspire Record 191764 DOI 10.17182/hepdata.20477

The authors have measured the large-pT inclusive cross sections for π0 and η production near 90° in the center-of-mass system in 200-GeV/c π+ and proton collisions with beryllium, carbon, and aluminum targets. The cross section for both π0 and η mesons rises with increasing nucleon number (A) of the target nucleus as Aα, with α>1. The ratio of the π0 yield in pA collisions to that in π+A collisions decreases with increasing pT.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

ENERGY VARIATION OF THE ANALYZING POWER IN THE REACTION P (polarized) P ---> D PI+

Saha, A. ; Seth, K.K. ; Kielczewska, D. ; et al.

Phys.Rev.Lett. 51 (1983) 759-762, 1983.

Inspire Record 196398 DOI 10.17182/hepdata.20478

Precision measurements of the analyzing powers for the reaction ppol+p→d+π+ have been made at ≃ 550, 600, 650, 700, and 800 MeV. The data have been analyzed in terms of Legendre polynomials. It is found that excitation functions for both even and odd Legendre coefficients exhibit very similar resonant behaviors. It is concluded that the triplet amplitudes are as strongly dominated by the Δ(1232) as the well-known singlet amplitude, D21, and that the data do not exhibit any anomalous behavior suggestive of dibaryon resonances.

1 data table

Table 1

No description provided.

Neutral Current $\nu_\mu \eta$ and $\nu_\mu \rho$ Cross-sections from High-energy Neutrino Interactions in Deuterium

Kafka, T. ; Mann, W.A. ; Sommars, S. ; et al.

Phys.Rev.Lett. 48 (1982) 910-914, 1982.

Inspire Record 180620 DOI 10.17182/hepdata.20576

In an exposure of the deuterium-filled 15 ft bubble chamber, σ(νμn→νμX)σ(νμp→νμX) is measured to be 1.01±0.14. The ratios of neutral-current to charged-current cross sections are 0.30±0.03, 0.22±0.03, and 0.49±0.06 for D2, n, and p targets, respectively, which imply values uL2=0.19±0.06 and dL2=0.13±0.04 for the neutral-current chiral couplings. Evidence for both u- and d-quark jets in neutral-current reactions is observed in distributions of energy fraction of the fastest hadron of either charge from each event.

3 data tables

Table 1

No description provided.

Table 2

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Table 3

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POLARIZATION OF LAMBDA0 HYPERONS IN INCLUSIVE PRODUCTION BY 12-GEV PROTONS ON TUNGSTEN

Abe, F. ; Hara, K. ; Kim, N. ; et al.

Phys.Rev.Lett. 50 (1983) 1102-1105, 1983.

Inspire Record 192461 DOI 10.17182/hepdata.20570

The authors have measured the polarization of 2.4×105 Λ0 hyperons in inclusive production by 12-GeV protons on tungsten at three production angles, 3.5°, 6.5°, and 9.5°. In terms of Feynman's xF and transverse momentum of Λ0, the kinematical range is 0.3<~xF<~0.8 and 0.4<~pT<~1.6 GeV/c. The observed polarization does not depend strongly on xF and increases linearly with pT to 16% at pT=1.0 GeV/c, showing a tendency to level off above that point.

6 data tables

Table 1

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NEUTRINO FLUX AND TOTAL CHARGED CURRENT CROSS-SECTIONS IN HIGH-ENERGY NEUTRINO DEUTERIUM INTERACTIONS

Kitagaki, T. ; Tanaka, S. ; Yuta, H. ; et al.

Phys.Rev.Lett. 49 (1982) 98-101, 1982.

Inspire Record 182030 DOI 10.17182/hepdata.20571

From 12000 charged-current νμ D events obtained in an exposure of the Fermilab 15-ft bubble chamber to a high-energy wide-band neutrino beam, the absolute neutrino flux is determined using the reaction νμn→μ−p. For the total charged-current cross section, σt=kEν, k=(0.68±0.04±0.10)×10−38 cm2/GeV is obtained for Eν between 10 and 200 GeV. No clear energy dependence of the slope parameter k is observed.

1 data table

Table 1

No description provided.

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.

2 data tables

Table 1

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Table 2

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