HEPData Search

A sample of 24 700 Ω− hyperons was produced by a prolarized neutral beam in a spin-transfer reaction. The Ω− polarizations are found to be -0.054±0.019 and -0.149±0.055 at mean Ω− momenta of 322 and 398 GeV/c, respectively. The directions of these polarizations give an Ω− magnetic moment of -(1.94±0.17±0.14)μN

1 data table

Table 1

No description provided.

rivet Analysis
Measurement of the inclusive B* cross-section above the Upsilon (4S)

The CLEO-II collaboration Akerib, D.S. ; Barish, B. ; Cowen, D.F. ; et al.

Phys.Rev.Lett. 67 (1991) 1692-1695, 1991.

Inspire Record 29927 DOI 10.17182/hepdata.19887

Using the CLEO II detector at the Cornell Electron Storage Ring, we have determined the inclusive B* cross section above the Υ(4S) resonance in the energy range from 10.61 to 10.70 GeV. We also report a new measurement of the energy of the B*→Bγ transition photon of 46.2±0.3±0.8 MeV.

2 data tables

Table 1

Hadronic cross section above the continuum. The final state is an unknown mixture of B BBAR + B* BBAR + B B*BAR (+ B* B*BAR only at the highest energy).

Table 2

Inclusive B* cross section.

rivet Analysis
Observation of an isoscalar vector meson at approximately = 1650-MeV/c**2 in the e+ e- ---> K anti-K pi reaction

Bisello, D. ; Busetto, G. ; Castro, A. ; et al.

Z.Phys.C 52 (1991) 227-230, 1991.

Inspire Record 318558 DOI 10.17182/hepdata.14928

The$e^ +e^ -\to K_s^0 K^ \pm\pi ^ \mp$ andK+K−π0 cross sections have been measured in the energy interval$1350 \leqq \sqrt s\leqq 2400$ with the DM2 detector at DCI. The$K_s^0 K^ \pm\pi ^ \mp$ cross section shows the contribution of an isoscalar vector meson at ≈1650 MeV/c2 in agreement with a previous experiment. The low statisticsK+K−π0 measurement is consistent with the above result.

2 data tables

Table 1

The K0S K+- PI-+ cross section.

Table 2

The K+ K- PI0 cross section.

On the production of fast and slow particles in nucleus-nucleus collisions at ultrarelativistic energies

Jain, P.L. ; Sengupta, K. ; Singh, G. ;

Phys.Rev.C 44 (1991) 844-853, 1991.

Inspire Record 315632 DOI 10.17182/hepdata.26111

Multiplicity and angular distributions of shower, grey, and black particles produced in the interactions of S32 at 200A GeV, O16 at 200 and 60A GeV, and He4 at ∼140A GeV in emulsion are compared with the predictions of a Monte Carlo code which takes into account the internuclear cascading. The correlations between the various parameters belonging to the same or to the different kinds of particles are discussed. The data on shower and grey particles from all the beams are well described by the code. However, the black prong data show a significant departure from this model.

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

A Test of QCD based on three jet events from Z0 decays

The L3 collaboration Adeva, B. ; Adriani, O. ; Aguilar-Benitez, M. ; et al.

Phys.Lett.B 263 (1991) 551-562, 1991.

Inspire Record 315954 DOI 10.17182/hepdata.38291

We present a study of 43 000 3-jet events from Z 0 boson decays. Both the measured jet energy distributions and the event orientation are reproduced by second order QCD. An alternative model with scalar gluons fails to describe the data.

1 data table

Table 1

Jets are ordered according their energy: E1 > E2 > E3.