TY  - JOUR
AU  - Garcia Martin, L. M.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Roy, S.
AU  - Sain, R.
AU  - Sinha, R.
PY  - 2019
DA  - 2019//
TI  - Radiative b-baryon decays to measure the photon and b-baryon polarization
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 634 - 10pp
VL  - 79
IS  - 7
PB  - Springer
AB  - The radiative decays of b-baryons facilitate the direct measurement of photon helicity in b -> s gamma transitions thus serving as an important test of physics beyond the Standard Model. In this paper we analyze the complete angular distribution of ground state b-baryon radiative decays to multibody final states assuming an initially polarized b-baryon sample. Our sensitivity study suggests that the photon polarization asymmetry can be extracted to a good accuracy along with a simultaneous measurement of the initial b-baryon polarization. With higher yields of b-baryons, achievable in subsequent runs of the Large Hadron Collider (LHC), we find that the photon polarization measurement can play a pivotal role in constraining different new physics scenarios.
SN  - 1434-6044
UR  - https://arxiv.org/abs/1902.04870
UR  - https://doi.org/10.1140/epjc/s10052-019-7123-7
DO  - 10.1140/epjc/s10052-019-7123-7
LA  - English
N1  - WOS:000477914900005
ID  - GarciaMartin_etal2019
ER  -