Semileptonic decay λb>λc+τ-+ν- in the covariant confined quark model; Physical Review D; Vol. 91, iss. 7
| Parent link: | Physical Review D: particles, fields, gravitation, and cosmology Vol. 91, iss. 7.— 2015.— [074001] |
|---|---|
| 団体著者: | |
| その他の著者: | , , , , , |
| 要約: | Title screen [Semileptonic decay Lambda_b -> Lambda_c + tau- + antinu_tau in the covariant confined quark model] Recently there has been much interest in the tauonic semileptonic meson decays B>D+?+?? and B>D*+?+??, where one has found larger rates than what is predicted by the Standard Model. We analyze the corresponding semileptonic baryon decays ?b0>?c++?-+??? with particular emphasis on the lepton helicity flip and scalar contributions which vanish for zero lepton masses. We calculate the total rate, the differential decay distributions, the longitudinal and transverse polarization of the daughter baryon ?c+ and the ? lepton, and the lepton-side forward-backward asymmetries. The nonvanishing polarization of the daughter baryon ?c+ leads to hadron-side asymmetries in e.g. the decay ?c+>?0+?+ and azimuthal correlations between the two final-state decay planes which we specify. We provide numerical results on these observables using results of the covariant confined quark model. We find large lepton mass effects in the q2 spectra and in the polarization observables. Режим доступа: по договору с организацией-держателем ресурса |
| 言語: | 英語 |
| 出版事項: |
2015
|
| 主題: | |
| オンライン･アクセス: | http://dx.doi.org/10.1103/PhysRevD.91.074001 |
| フォーマット: | 電子媒体 図書の章 |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=641906 |