QCD corrections to decay-lepton polar and azimuthal angular distributions in e + e − → t $$\overline t $$ in the soft-gluon approximationin the soft-gluon approximation
作者： Saurabh D Rindani
DOI: 10.1007/S12043-002-0016-5
关键词:
摘要: QCD corrections to order α s in the soft-gluon approximation angular distributions of decay charged leptons process e + − → t \(\overline \), followed by semileptonic are obtained esu− centre-of-mass frame. As compared top rest frame, these have advantage that they would allow direct comparison with experiment without need reconstruct The results also do not depend on choice a spin quantization axis for or t. Analytic expression triple distribution polar angle and azimuthal angles lepton is obtained. derived charged-lepton angle. Numerical values discussed √s=400, 800 1500 GeV.
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David Atwood, Shaouly Bar-Shalom, Gad Eilam, Amarjit Soni, CP nonconservation in pp-bar-->tb-barX at the Fermilab Tevatron. Physical Review D. ,vol. 54, pp. 5412- 5416 ,(1996) , 10.1103/PHYSREVD.54.5412
Joey Thompson, None, Observation of the Top Quark Physical Review Letters. ,vol. 74, pp. 2632- 2637 ,(1995) , 10.1103/PHYSREVLETT.74.2632
Saurabh D Rindani, P Poulose, CP-violating asymmetries in e+e− → tt with longitudinally polarized electrons Physics Letters B. ,vol. 349, pp. 379- 385 ,(1995) , 10.1016/0370-2693(95)00193-O
B. Lampe, Complete Helicity Decomposition of the B-t-tbar Vertex including Higher Order QCD Corrections and Applications to e+e- --> t tbar arXiv: High Energy Physics - Phenomenology. ,(1998) , 10.1007/S100529901098
Hong Xuan Liu, Chong Sheng Li, Zhen Jun Xiao, Zhen Jun Xiao, O(αs) QCD corrections to spin correlations in the process at the NLC Physics Letters B. ,vol. 458, pp. 393- 401 ,(1999) , 10.1016/S0370-2693(99)00593-6
T. Arens, L.M. Sehgal, Secondary leptons as probes of top-quark polarization in e+e− → tt Nuclear Physics. ,vol. 393, pp. 46- 64 ,(1993) , 10.1016/0550-3213(93)90236-I
Bohdan Grza̧dkowski, Zenrō Hioki, Energy spectrum of secondary leptons in e+e− → tt̄: Non-standard interactions and CP violation Nuclear Physics. ,vol. 484, pp. 17- 32 ,(1997) , 10.1016/S0550-3213(96)00602-5
Ekaterina Christova, Dimitar Draganov, The top-quark polarization in the angular and energy distributions of the b quarks in e+e−→tt̄ Physics Letters B. ,vol. 434, pp. 373- 378 ,(1998) , 10.1016/S0370-2693(98)00630-3
Yasunari Akatsu, Osamu Terazawa, V and A Structures of $t\bar{t}Z$ Vertex and Top Quark Polarization: QCD Corrections International Journal of Modern Physics A. ,vol. 12, pp. 2613- 2622 ,(1997) , 10.1142/S0217751X97001468
Z. Hioki, L. Brzezinski, B. Grzadkowski, Effects of Non-Standard Interactions for the Energy Spectrum of Secondary Leptons in e^+e^- --> t t-bar arXiv: High Energy Physics - Phenomenology. ,(1997) , 10.1142/S0217751X99000646