For tau leptons produced in e(+)e(-) --> tau(+)tau(-) interactions there are, in addition to the longitudinal spin correlations, two independent transverse spin correlations associated with the transverse (within the production plane) and normal (to the production plane) polarization components. A measurement of the transverse-transverse and transverse-normal tau spin correlations in the decay Z --> tau(+)tau(-), C-TT and C-TN, is presented based on the aplanarity angle of the decay products of both tau leptons. Using 80 pb(-1) of data collected by ALEPH on the peak of the Z resonance, the results are C-TT = 1.06 +/- 0.13(stat) +/- 0.05(syst), and C-TN = 0.08 +/- 0.13(stat) +/- 0.04(syst). These values are in agreement with the Standard Model predictions, C-TT = 0.99 and C-TN = -0.01.

R., B., D., B., D., D., P., G., C., G., J. P., L., et al. (1997). Measurement of the transverse spin correlations in the decay Z->tau(+)tau(-). PHYSICS LETTERS. SECTION B, 405(1-2), 191-201 [10.1016/S0370-2693(97)00664-3].

Measurement of the transverse spin correlations in the decay Z->tau(+)tau(-)

CIOCCI, MARIA AGNESE;MARROCCHESI, PIER SIMONE;
1997-01-01

Abstract

For tau leptons produced in e(+)e(-) --> tau(+)tau(-) interactions there are, in addition to the longitudinal spin correlations, two independent transverse spin correlations associated with the transverse (within the production plane) and normal (to the production plane) polarization components. A measurement of the transverse-transverse and transverse-normal tau spin correlations in the decay Z --> tau(+)tau(-), C-TT and C-TN, is presented based on the aplanarity angle of the decay products of both tau leptons. Using 80 pb(-1) of data collected by ALEPH on the peak of the Z resonance, the results are C-TT = 1.06 +/- 0.13(stat) +/- 0.05(syst), and C-TN = 0.08 +/- 0.13(stat) +/- 0.04(syst). These values are in agreement with the Standard Model predictions, C-TT = 0.99 and C-TN = -0.01.
1997
R., B., D., B., D., D., P., G., C., G., J. P., L., et al. (1997). Measurement of the transverse spin correlations in the decay Z->tau(+)tau(-). PHYSICS LETTERS. SECTION B, 405(1-2), 191-201 [10.1016/S0370-2693(97)00664-3].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/38190
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo