HEPData Search

Showing 10 of 7953 results

Annihilations of 5.7 GeV/c $\bar{p}$ in hydrogen into four charged pions

Accensi, A. ; Alles-Borelli, V. ; French, B. ; et al.

Phys.Lett. 20 (1966) 557-559, 1966.

Inspire Record 1389655 DOI 10.17182/hepdata.30034

Annihilations of 5.7 GeV/ c antiprotons in hydrogen into four charged pions have been studied. Production of ϱ o and f o mesons and a possible enhancement in both π ± π ± and π + π − mass distributions at 1.54 GeV is seen. Upper limits for quasi 2-body annihilations are given.

1 data table

Table 1

No description provided.

The charge exchange $K^- + p \to K^0 + n$ at 9.50 GeV/c

Astbury, P. ; Finocchiaro, G. ; Michelini, A. ; et al.

Phys.Lett. 16 (1965) 328-331, 1965.

Inspire Record 1389639 DOI 10.17182/hepdata.30381

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Backward scattering of positrons and electrons on protons

Bouquet, B. ; Benaksas, D. ; Grossetête, B. ; et al.

Phys.Lett.B 26 (1968) 178-180, 1968.

Inspire Record 1389620 DOI 10.17182/hepdata.29320

The ratio R = σ (e + + p)/ σ (e − + p) of the elastic scattering cross-section detecting the recoil proton at 0 o in coincidence with the backward electron or positron was found to be R = 1.036 ± 0.018 at q 2 = 8 fm −2 , R = 1.079 ± 0.046 at q 2 = 32 fm −2 .

2 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////Errors presented are the total combined statistical and systematic error s. Radiative corrections applied).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////Errors presented are the total combined statistical and systematic error s. Radiative corrections applied).

Low energy $\Lambda p \to \Lambda p$ cross section measurement and determination of S-wave scattering lengths

Alexander, G. ; Benary, O. ; Karshon, U. ; et al.

Phys.Lett. 19 (1966) 715-719, 1966.

Inspire Record 1389622 DOI 10.17182/hepdata.30161

The Λ p å Λ p cross section has been measured in the Λ-momentum range of 120 to 320 MeV/ c using 238 events. A comparison with the effective range approximation yielded the values a s = −2.46, a t = −2.07, r s = 3.87 and r t = 4.50 in fm.

1 data table

Table 1

No description provided.

$\bar\Lambda$ production in 7.3 GeV/c $K^+ p$ interactions

Chien, Chih-Yung ; Dauber, P.M. ; Mellema, D.Joel ; et al.

Phys.Lett.B 25 (1967) 426-429, 1967.

Inspire Record 1389654 DOI 10.17182/hepdata.29438

Reactions involving Λ and Σ 0 production are studied in 7.3 GeV/ c K + p interactions. Cross sections and angular distributions are given.

1 data table

Table 1

Axis error includes +- 0.0/0.0 contribution (?////Corrected for detection and scanning losses and LAMBDAbar neutral decay modes).

Forward scattering of GeV photons from carbon and tungsten

Eisenhandler, E. ; Mistry, N. ; Mostek, P. ; et al.

Phys.Lett.B 24 (1967) 347-348, 1967.

Inspire Record 1389656 DOI 10.17182/hepdata.29584

Small angle (≈3°) scattering of GeV photons from carbon and tungsten has been measured. The results are compared with the predictions of a simple “optical theorem” model, where the total cross-section for photon absorption is taken to be the incoherent sum of absorption on single nucleons.

1 data table

Table 1

Only stattistical errors are presented.

Evidence for vector meson exchange in $\rho^-$ production at 8 GeV/c

Derado, I. ; Poirier, J.A. ; Biswas, N.N. ; et al.

Phys.Lett.B 24 (1967) 112-114, 1967.

Inspire Record 1389618 DOI 10.17182/hepdata.29606

We have studied ϱ − production at 8 GeV / c . The data cannot be explained by one-pion-exchange with absorption and we conclude that vector exchange contributes. This contrasts with ϱ o production at this energy and ϱ − production at lower energy.

1 data table

Table 1

No description provided.

Study of the $e^+ e^-\to\mu^+ \mu^- \gamma$ reaction at center-of-mass energies between 54 and 64 GeV

The VENUS collaboration Yonezawa, Y. ; Abe, K. ; Amako, K. ; et al.

Phys.Lett.B 264 (1991) 212-218, 1991.

Inspire Record 1389624 DOI 10.17182/hepdata.29359

The cross section and forward-backward muon charge asymmetry for the e + e − → μ + μ − γ reaction were measured to be σ =2.82±0.35 pb and A =−0.34±0.10 with the VENUS detector at TRISTAN at 〈√ s 〉=59.2GeV for an integrated luminosity of 53.5 pb −1 . The measured cross section agrees with the theoretical prediction. The asymmetry result is consistent with the electroweak prediction but not with the QED prediction at the level of 2 σ .

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Total cross-section for n-p and n-d scattering at 10 GeV/c neutron momentum

Engler, J. ; Horn, K. ; König, J. ; et al.

Phys.Lett.B 27 (1968) 599-601, 1968.

Inspire Record 1389110 DOI 10.17182/hepdata.752

The total neutron cross-sections were measured with high precision for hydrogen and deuterium. At an average neutron momentum of 10 GeV/c we obtained σ T (np)=39.5±0.5 mb and σ T (nd)=73.3±1.1 mb. These values are in excellent agreement with p-p and p-d total cross sections. No energy dependence was found for n-p cross section between 4 and 10 GeV/c.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.