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Spin correlation in t anti-t production from p anti-p collisions at S**(1/2) = 1.8-TeV

The D0 collaboration Abbott, B. ; Abolins, M. ; Abramov, V. ; et al.

Phys.Rev.Lett. 85 (2000) 256-261, 2000.

Inspire Record 524260 DOI 10.17182/hepdata.42996

The D0 collaboration has performed a study of spin correlation in tt-bar production for the process tt-bar to bb-bar W^+W^-, where the W bosons decay to e-nu or mu-nu. A sample of six events was collected during an exposure of the D0 detector to an integrated luminosity of approximately 125 pb^-1 of sqrt{s}=1.8 TeV pp-bar collisions. The standard model (SM) predicts that the short lifetime of the top quark ensures the transmission of any spin information at production to the tt-bar decay products. The degree of spin correlation is characterized by a correlation coefficient k. We find that k>-0.25 at the 68% confidence level, in agreement with the SM prediction of k=0.88.

1 data table

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DIFFRACTION PROCESSES IN SIX BODY EXCLUSIVE K+ P REACTIONS AT 32-GEV/C. (IN RUSSIAN)

Azhinenko, I.V. ; Amaglobeli, N.S. ; Vorobev, A.P. ; et al.

Sov.J.Nucl.Phys. 46 (1987) 464, 1987.

Inspire Record 240069 DOI 10.17182/hepdata.10330

None

31 data tables

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POLARIZATION ASYMMETRY OSCILLATIONS IN REACTION pi- p ---> p0 n AT t <= 3-GeV/c**2

Apokin, V.D. ; Arestov, Yu.I. ; Belikov, N.I. ; et al.

Sov.J.Nucl.Phys. 45 (1987) 840, 1987.

Inspire Record 234598 DOI 10.17182/hepdata.40905

None

1 data table

Table 1

No description provided.

Polarization in the Reaction $\pi^-$ Polarized $p \to \pi^0 n$ at 40-{GeV}/$c$

Avvakumov, I.A. ; Apokin, V.D. ; Bagaturiya, Yu.Sh. ; et al.

Nucl.Phys.B 255 (1985) 253-272, 1985.

Inspire Record 206940 DOI 10.17182/hepdata.33791

The paper presents results on measuring the polarization in the reaction π − p→ π 0 n at 40 GeV/ c in the 4-momentum transfer range 0<| t |⩽2 (GeV/ c ) 2 . The results based on the statistics of about 2.2 million recorded events made it possible to observe a noticeable value and complex structure in the polarization behaviour up to | t |⩽2 (GeV/ c ) 2 .

2 data tables

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