HEPData Search

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Measurement of K(L) - K(S) mass difference using semileptonic decays of tagged neutral kaons

The CPLEAR collaboration Adler, R. ; Alhalel, T. ; Angelopoulos, A. ; et al.

Phys.Lett.B 363 (1995) 237-242, 1995.

Inspire Record 398337 DOI 10.17182/hepdata.52370

We present a new measurement of the K L -K S mass difference ( Δm ) using semileptonic decays of neutral kaons. The measurement yields Δm = (0.5274 ± 0.0029 stat. ± 0.0005 syst. ) × 10 10 ħ/s.

1 data table

Table 1

No description provided.

Charmed pair correlations in pi- Cu interactions at 230-GeV/c.

The ACCMOR collaboration Barlag, S. ; Becker, H. ; Bożek, A. ; et al.

Phys.Lett.B 302 (1993) 112-118, 1993.

Inspire Record 362064 DOI 10.17182/hepdata.28956

In the CERN NA32 experiment a high-resolution silicon vertex detector and a purely topological approach were used to collect 557 events consistent with associated charm production, both decay vertices being observed. The pseudorapidity gap distribution appears to be nearly independent of the nature of the charmed hadrons. This distribution is reasonably consistent with the next-to-leading order QCD calculations. However the azimuthal-angle distribution is significantly broader than the above predictions.

2 data tables

Table 1

FOR ONLY 20 EVENTS IN WICH BOTH DECAYS ARE FULLY RECONSTRUCTED ( 26 D0 , 8 D+ , 5 D/S+ , 1 LAMBDA/C+ CHARMED PARTICLES ).

Table 2

No description provided.

Prompt fission induced by anti-proton annihilation at rest on heavy nuclei

Bocquet, J.P. ; Malek, Fairouz ; Nifenecker, H. ; et al.

Z.Phys.A 342 (1992) 183-189, 1992.

Inspire Record 343226 DOI 10.17182/hepdata.16577

Antiproton induced fission probabilities of U238, Bi209, Pb208 and Au177 are reported together with the mass distribution of the fission fragments in the U238 and Bi209 cases. The charged particles multiplicities observed in co-incidence with fission have, also, been measured for U and Bi and are presented.

1 data table

Table 1

TOTAL AVERAGE MASSES AND KINETIC ENERGIES OF FISSION FRAGMENTS. Mean mass is in proton mass units.

A Measurement of the W boson mass

The CDF collaboration Abe, F. ; Amidei, Dante E. ; Apollinari, G. ; et al.

Phys.Rev.Lett. 65 (1990) 2243-2246, 1990.

Inspire Record 299674 DOI 10.17182/hepdata.19940

We have determined mW=79.91±0.39 GeV/c2 from an analysis of W→eν and W→μν data from the Collider Detector at Fermilab in p¯p collisions at a c.m. energy of √s =1.8 TeV. This result, together with the world-average Z mass, determines the weak mixing angle to be sin2θW=0.232±0.008. Bounds on the top-quark mass are discussed.

1 data table

Table 1

Combining W mass result with world-average Z mass (91.191 GEV).