Anashkin, E.V.
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A Search for Longlived Neutral Heavy Leptons in 400 GeV/c Proton Interactions

Bechis, D.J. ; Chang, C.Y. ; Dombeck, T.W. ; et al.
Phys.Rev.Lett. 40 (1978) 602-604, 1978.
Inspire Record 6478 DOI 10.17182/hepdata.37888

We report a null search for neutral heavy leptons produced unaccompanied by muons in 400-GeV/c proton-nucleon collisions in a magnetized beam dump and decaying in vacuum downstream. The upper limit on σB for L0's with Feynman x≳0.2 and θlab≲10 mrad with branching ratio B into two charged particles is σB≲2.8×10−35 cm2/nucleon at the 90% confidence level for masses below 1.0 GeV/c2 and lifetimes between 10−10 and 10−8 sec.

1 data table
Table 1

No description provided.


Negative Pion Production in Proton Proton Interactions at 69-GeV/c

The French-Soviet collaboration Bumazhnov, V.A. ; Ermolov, P.F. ; Fenyuk, A.S. ; et al.
Phys.Lett.B 50 (1974) 283-286, 1974.
Inspire Record 89197 DOI 10.17182/hepdata.27949

Inclusive spectra of π − production for pp interactions are discussed at 69 GeV/ c both in the central and in the fragmentation region and are compared to data at lower and higher energies. The p T dependence of the invariant structure function is also analysed.

2 data tables
Table 1

No description provided.

Table 2

No description provided.