Measurement of the transverse spin correlations in the decay Z → τ+τ-
A measurement of the transverse-transverse, CTT, and transverse-normal CTN, τ spin correlations in the decay Z0 → τ+ τ− is presented based on the aplanarity angle of the decay products of both taus. Based on 80 pb−1 of data collected by ALEPH[1] in 1992, 1993 and 1994 on the peak of the Z resonance,...
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| 語言: | English |
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Institutional Knowledge at Singapore Management University
1997
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| 在線閱讀: | https://ink.library.smu.edu.sg/sis_research/5770 https://ink.library.smu.edu.sg/context/sis_research/article/6773/viewcontent/Measurement_of_the_transverse_spin_correlations_in_the_decay_Z___.pdf |
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| 機構: | Singapore Management University |
| 語言: | English |
| 總結: | A measurement of the transverse-transverse, CTT, and transverse-normal CTN, τ spin correlations in the decay Z0 → τ+ τ− is presented based on the aplanarity angle of the decay products of both taus. Based on 80 pb−1 of data collected by ALEPH[1] in 1992, 1993 and 1994 on the peak of the Z resonance, the results are: CTT = 1.00 ± 0.14(stat) ± 0.04(syst), CTN =−0.08 ± 0.14(stat) ± 0.02(syst). These values are in agreement with the Standard Model predictions, CTT = 0.989 and CTN = 0. |
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