Abstract
We consider possibilities to determine the handedness of b{yields}c current transitions using semileptonic baryonic {Lambda}{sub b}{yields}{Lambda}{sub c} transitions. We propose to analyze the longitudinal polarization of the daughter baryon {Delta}{sub c} by using momentum-spin correlation measurements in the form of forward-backward (FB) asymmetry measures involving its nonleptonic decay products. We use an explicit form factor model to determine the longitudinal polarization of the {Lambda}{sub c} in the semileptonic decay {Lambda}{sub b}{yields}{Lambda}{sub c}+l{sup -}+ anti v{sub l}. The mean longitudinal polarization of the {Lambda}{sub c} is negative (positive) for left-chiral (right-chiral) b{yields}c current transitions. The frame dependent longitudinal polarization of the {Lambda}{sub c} is large ({approx_equal}80%) in the {Lambda}{sub b} rest frame and somewhat smaller (30%-40%) in the lab frame when the {Lambda}{sub b}`s are produced on the Z{sub 0} peak. We suggest to use nonleptonic decay modes of the D{sub c} to analyze its polarization and thereby to determine the chirality of the b{yields}c transition. Since the {Lambda}{sub b}`s produced on the Z{sub 0} are expected to be polarized we discuss issues of the polarization transfer in {Lambda}{sub b}{yields}{Lambda}{sub c} transitions. We also investigate the p{sub {perpendicular}}- and p-cut sensitivity of our predictions for the polarization of the {Lambda}{sub c}.
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Koenig, B;
[1]
Koerner, J G;
[1]
Kraemer, M
[2]
- Mainz Univ. (Germany). Inst. fuer Physik
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Citation Formats
Koenig, B, Koerner, J G, and Kraemer, M.
On the determination of the b {yields}c handedness using nonleptonic {Lambda}{sub c}-decays.
Germany: N. p.,
1993.
Web.
Koenig, B, Koerner, J G, & Kraemer, M.
On the determination of the b {yields}c handedness using nonleptonic {Lambda}{sub c}-decays.
Germany.
Koenig, B, Koerner, J G, and Kraemer, M.
1993.
"On the determination of the b {yields}c handedness using nonleptonic {Lambda}{sub c}-decays."
Germany.
@misc{etde_10135539,
title = {On the determination of the b {yields}c handedness using nonleptonic {Lambda}{sub c}-decays}
author = {Koenig, B, Koerner, J G, and Kraemer, M}
abstractNote = {We consider possibilities to determine the handedness of b{yields}c current transitions using semileptonic baryonic {Lambda}{sub b}{yields}{Lambda}{sub c} transitions. We propose to analyze the longitudinal polarization of the daughter baryon {Delta}{sub c} by using momentum-spin correlation measurements in the form of forward-backward (FB) asymmetry measures involving its nonleptonic decay products. We use an explicit form factor model to determine the longitudinal polarization of the {Lambda}{sub c} in the semileptonic decay {Lambda}{sub b}{yields}{Lambda}{sub c}+l{sup -}+ anti v{sub l}. The mean longitudinal polarization of the {Lambda}{sub c} is negative (positive) for left-chiral (right-chiral) b{yields}c current transitions. The frame dependent longitudinal polarization of the {Lambda}{sub c} is large ({approx_equal}80%) in the {Lambda}{sub b} rest frame and somewhat smaller (30%-40%) in the lab frame when the {Lambda}{sub b}`s are produced on the Z{sub 0} peak. We suggest to use nonleptonic decay modes of the D{sub c} to analyze its polarization and thereby to determine the chirality of the b{yields}c transition. Since the {Lambda}{sub b}`s produced on the Z{sub 0} are expected to be polarized we discuss issues of the polarization transfer in {Lambda}{sub b}{yields}{Lambda}{sub c} transitions. We also investigate the p{sub {perpendicular}}- and p-cut sensitivity of our predictions for the polarization of the {Lambda}{sub c}. (orig.)}
place = {Germany}
year = {1993}
month = {Sep}
}
title = {On the determination of the b {yields}c handedness using nonleptonic {Lambda}{sub c}-decays}
author = {Koenig, B, Koerner, J G, and Kraemer, M}
abstractNote = {We consider possibilities to determine the handedness of b{yields}c current transitions using semileptonic baryonic {Lambda}{sub b}{yields}{Lambda}{sub c} transitions. We propose to analyze the longitudinal polarization of the daughter baryon {Delta}{sub c} by using momentum-spin correlation measurements in the form of forward-backward (FB) asymmetry measures involving its nonleptonic decay products. We use an explicit form factor model to determine the longitudinal polarization of the {Lambda}{sub c} in the semileptonic decay {Lambda}{sub b}{yields}{Lambda}{sub c}+l{sup -}+ anti v{sub l}. The mean longitudinal polarization of the {Lambda}{sub c} is negative (positive) for left-chiral (right-chiral) b{yields}c current transitions. The frame dependent longitudinal polarization of the {Lambda}{sub c} is large ({approx_equal}80%) in the {Lambda}{sub b} rest frame and somewhat smaller (30%-40%) in the lab frame when the {Lambda}{sub b}`s are produced on the Z{sub 0} peak. We suggest to use nonleptonic decay modes of the D{sub c} to analyze its polarization and thereby to determine the chirality of the b{yields}c transition. Since the {Lambda}{sub b}`s produced on the Z{sub 0} are expected to be polarized we discuss issues of the polarization transfer in {Lambda}{sub b}{yields}{Lambda}{sub c} transitions. We also investigate the p{sub {perpendicular}}- and p-cut sensitivity of our predictions for the polarization of the {Lambda}{sub c}. (orig.)}
place = {Germany}
year = {1993}
month = {Sep}
}