Date

An Improved determination of the electroweak mixing angle from muon-neutrino electron scattering

The CHARM-II collaboration Geiregat, D. ; Vilain, P. ; Wilquet, G. ; et al.
Phys.Lett.B 259 (1991) 499-507, 1991.
Inspire Record 314000 DOI 10.17182/hepdata.18515

We are reporting an improved determination of the electroweak mixing angle sin 2 Θ w from the ratio of ν μ e to ν μ e scattering cross sections. The CHARM II detector was exposed to neutrino and antineutrino wide band beams at the 450 GeV CERN SPS. Including new data collected in 1989 we have obtained 1316 ± 56 ν μ e and 1453 ± 62 ν μ e events. From the ratio of the visible cross sections we determined sin 2 Θ 0 =0.239 ± 0.009(stat) ± 0.007(syst) without radiative corrections and g V e g A e =0.047 ± 0.046 . Combining this last result with recent results on g A e at LEP we obtain g V e = −0.023 ± 0.023.

5 data tables

Systematic error presented includes error from flux normalization 'F'=1.030+- 0.022, no detaled description of the other sources and of the combination pr ocedure.. 'F'.

Without radiative corrections, systematic error combined in quadrature fromconponents listed under SYSTEMATICS.

With radiative corrections as defined by Marciano-Sirlin scheme, see Phys.Rev.D22(1980)2695, Phys.Rev.Lett.46(1981)163, Phys.Rev.D29(1984)945, Phys.Rev.D31(1985)213E, Nucl.Phys.B217(1983)84. CENTRAL VALUE IS FOR M(TOP)=100 GEV, M(HIGGS)=100 GEV.

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Mechanism of fast-nucleon production in the reactions (pi+,2p x) and (pi+,p x) on Ag and Br nuclei.

Lantsev, I.A. ; Pavlov, A.V. ; Ostroumov, V.I. ;
Sov.J.Nucl.Phys. 54 (1991) 207-209, 1991.
Inspire Record 325953 DOI 10.17182/hepdata.17207

None

1 data table

No description provided.


Interactions of protons with heavy emulsion nuclei at 20.8-GeV/c

Gulamov, K.G. ; Saidkhanov, N.Sh. ; Khaitov, M.S. ; et al.
Sov.J.Nucl.Phys. 54 (1991) 808-811, 1991.
Inspire Record 329805 DOI 10.17182/hepdata.17226

None

2 data tables

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The (K+,K+ d) reaction at 130-MeV and 268-MeV

Berdnikov, Ya.A. ;
Sov.J.Nucl.Phys. 54 (1991) 726-730, 1991.
Inspire Record 329801 DOI 10.17182/hepdata.17237
1 data table

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The (K+,K+ p) reaction at 200-MeV.

Berdnikov, Ya.A. ; Zaitsev, M.K. ; Ivashchenko, M.V. ; et al.
Sov.J.Nucl.Phys. 54 (1991) 210-213, 1991.
Inspire Record 325954 DOI 10.17182/hepdata.17236

None

1 data table

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Photoproduction of pi0 mesons on complex nuclei at small angles in the region of the Delta(1232) resonance.

Belousov, A.S. ; Vazdik, Ya.A. ; Malinovsky, E.I. ; et al.
Sov.J.Nucl.Phys. 53 (1991) 379-386, 1991.
Inspire Record 325945 DOI 10.17182/hepdata.17253

None

5 data tables

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Angular dependence of (He-3,t) charge-exchange cross sections on protons and carbon nuclei with excitation of the Delta isobar at momentum 6.91-GeV/c.

Ableev, V.G. ; Zaporozhets, S.A. ; Nomofilov, A.A. ; et al.
Sov.J.Nucl.Phys. 53 (1991) 286-291, 1991.
Inspire Record 330804 DOI 10.17182/hepdata.17254

None

8 data tables

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Analyzing power of the reactions d(pol.) + C --> p + X and d(pol.) + C --> p + p (d) + X at energies of 0.6-GeV/nucleon to 2.1-GeV/nucleon.

Beznogikh, G.G. ; Budilov, V.A. ; Filipkowski, A. ; et al.
Sov.J.Nucl.Phys. 54 (1991) 812-818, 1991.
Inspire Record 324762 DOI 10.17182/hepdata.17238

None

14 data tables

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Polarization of $\Xi^-$ Hyperons Produced by 800-GeV Protons

Duryea, J. ; Guglielmo, G. ; Heller, Kenneth J. ; et al.
Phys.Rev.Lett. 67 (1991) 1193-1196, 1991.
Inspire Record 322767 DOI 10.17182/hepdata.19903

The polarization PΞ− of Ξ− hyperons produced by 800-GeV protons has been measured for xF from 0.3 to 0.7 and pT from 0.5 to 1.5 GeV/c. PΞ− has a pT dependence similar to that of the Λ but has a different xF behavior. Also, an energy dependence of PΞ− has been observed.

1 data table

1.3 mv production angle was horizontal. Others are vertical.


Spin transfer measurements of the pi d (polarized) ---> p p (polarized) reaction spanning the Delta resonance

Feltham, A. ; Trelle, R.P. ; Jones, G. ; et al.
Phys.Rev.Lett. 66 (1991) 2573-2576, 1991.
Inspire Record 315151 DOI 10.17182/hepdata.19906

The first spin-transfer observables for the πd→pp reaction have been measured at a number of energies spanning the Δ resonance in this system. These parameters correspond to KSL and KSS of the pp→dπ reaction for incident proton energies ranging from 600 to 800 MeV. Such data can provide an important constraint on the determination of the partial-wave amplitudes describing this fundamental reaction. The discrepancies between our data, theoretical predictions, and values calculated from published partial-wave amplitudes demonstrate the need for further work in this area.

2 data tables

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