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A Measurement of the strong coupling constant alpha-s in W boson production at the CERN proton - anti-proton collider

Lindgren, M. ; Ikeda, M. ; Joyce, D. ; et al.

Phys.Rev.D 45 (1992) 3038-3041, 1992.

Inspire Record 317667 DOI 10.17182/hepdata.6542

The strong coupling constant αs has been determined from a study of the reaction p¯p→W±X, W→eν at s of 630 GeV in the UA1 experiment at CERN. The measurement is based upon a study of jet production in association with W bosons. The result obtained is αs(MW2)=0.127±0.026(stat)±0.034(syst).

2 data tables

Table 1

Systematic error not given.

Table 2

No description provided.

Rescattering in neutrino / anti-neutrino deuteron reactions

Tenner, A.G. ; Nikolaev, Nikolai N. ;

Nuovo Cim.A 105 (1992) 1001-1024, 1992.

Inspire Record 318863 DOI 10.17182/hepdata.37840

A study is made of the rescattering phenomenon in deuterons by means of an analysis of ν/xxx;-d interactions in the WA25 (BEBC) experiment at CERN. Experimental data are presented on the rescattering fraction, its energy and multiplicity dependence, on the rapidity spectra of specific particles, on the multiplicity properties of rescatter interactions, and on strange-particle production. Rescattering offers an opportunity to study the behaviour of the produced particlein statu nascendi. The experimental phenomena are discussed in the framework of the formation time formalism. The proper time of hadronization τf is evaluated to be ∼0.5fm/c. A possible reduction of formation time in low-multiplicity events is discussed. Some differences between neutrino and hadron-induced rescattering in deuterons are attributed to the constituent quark structure of pions and nucleons. The experimental results are relevant for the issue of quark-gluon plasma formation in heavy-ion collisions.

18 data tables

Table 1

ODD NUMBER OF HADRONS.

Table 2

ODD NUMBER OF HADRONS.

Table 3

ODD NUMBER OF HADRONS.