HEPData Search

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pi--p Elastic Scattering at 1.44 Bev

Chretien, M. ; Leitner, J. ; Samios, N.P. ; et al.

Phys.Rev. 108 (1957) 383-389, 1957.

Inspire Record 45962 DOI 10.17182/hepdata.26863

An investigation of π−+p elastic scattering, made in a liquid propane bubble chamber, is reported. Identification of events is made on the basis of kinematics. The problem of contamination by pion scattering from protons bound in carbon is considered in some detail; it is shown that the latter requires a correction of only 4±2.5% of the total number of events. The angular distribution is presented. It shows a large diffraction peak at small angles and an approximately isotropic plateau over the backward hemisphere. The forward peak is fitted to a black-sphere diffraction pattern with a radius of (1.08±0.06)×10−13 cm. The total elastic cross section is found to be σe=10.1±0.80 mb.

1 data table

Table 1

No description provided.

Total Cross-Sections of the Hadronic Absorption of High-Energy Photons by Nucleons

Belousov, A.S. ; Budanov, N.P. ; Vazdik, Ya.A. ; et al.

Yad.Fiz. 21 (1975) 556-566, 1975.

Inspire Record 102842 DOI 10.17182/hepdata.19133

None

1 data table

Table 1

No description provided.

J/psi Particle Production by 70-GeV/c Protons

Antipov, Yu.M. ; Bessubov, V.A. ; Budanov, N.P. ; et al.

Phys.Lett.B 60 (1976) 309, 1976.

Inspire Record 100281 DOI 10.17182/hepdata.6524

Invariant mass spectrum of μ + μ − pairs produced by 70 GeV/ c protons in Be target are presented. Distinct enhancements in the mass regions of ϱ, ω mesons, φ meson and J/ψ particle are observed. For J/ψ production x and p ⊥ 2 distributions are given. The total cross section for the reaction p + Be → ( J ψ → μ + μ − ) + … is equal to 9.5 ± 2.5 nb/nucleus .

5 data tables

Table 1

No description provided.

Table 2

ASSUME B.R.(MU+MU-) = 0.069.

Table 3

ASSUME A**(2/3) DEPENDENCE FOR SIGMA.

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Nucleon Space Distribution in Nuclei Zr-90 and Pb-208 from the Elastic Proton Scattering at 1-GeV

Alkhazov, G.D. ; Belostotsky, S.L. ; Vorobev, A.A ; et al.

Yad.Fiz. 26 (1977) 673-682, 1977.

Inspire Record 125632 DOI 10.17182/hepdata.70469

None

2 data tables

Table 1

X ERROR D(TARGET) = 95.80 PCT.

Table 2

X ERROR D(TARGET) = 97.50 PCT.

Experimental Limits on Heavy Lepton Production by Neutrinos

Cnops, A.M. ; Connolly, P.L. ; Kahn, S.A. ; et al.

Phys.Rev.Lett. 40 (1978) 144-146, 1978.

Inspire Record 121918 DOI 10.17182/hepdata.37905

We present upper limits on the production of heavy leptons (L±) by neutrinos via the process νμ+Ne→L±+⋯, L±→e±+ν+ν¯. These limits imply that the L− and L+, if they couple in full strength to νμ, are heavier than 7.5 and 9 GeV, respectively. They also imply that the coupling strength νμ to the recently discovered 1.9-GeV heavy lepton τ is less than 0.025 of the normal νμ−μ coupling.

1 data table

Table 1

No description provided.

QUADRUPOLE EFFECT IN ELASTIC PROTON SCATTERING WITH 1-GEV ENERGY ON THE NUCLEI OF THE P SHELL. (IN RUSSIAN)

Alkhazov, G.D. ; Belostotsky, S.L. ; Vorobev, A.A ; et al.

Pisma Zh.Eksp.Teor.Fiz. 29 (1979) 88-92, 1979.

Inspire Record 145178 DOI 10.17182/hepdata.70237

None

26 data tables

Table 1

X ERROR D(THETA) = 0.2000 DEG.

Table 2

X ERROR D(TARGET) = 99.60 PCT. X ERROR D(THETA) = 0.2000 DEG.

Table 3

X ERROR D(THETA) = 0.2000 DEG.

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Confirmation of the Existence of the Sigma(c)++ and Lambda(c)+ Charmed Baryons

Baltay, C. ; Caroumbalis, D. ; French, H. ; et al.

Phys.Rev.Lett. 42 (1979) 1721, 1979.

Inspire Record 140761 DOI 10.17182/hepdata.50280

In a broadband neutrino exposure of the Fermilab 15-ft bubble chamber, we observe the production of the Σc++(2426) charmed baryon followed by its decay to Λc+(2260) and π+. We find the mass of the Λc+ to be 2257±10 MeV and the m(Σc++)−m(Λc+) mass difference to be 168±3 MeV. Previously unseen two-body decay modes of the Λc+(2260) are observed.

1 data table

Table 1

No description provided.