PT Journal
AU Garcia Martin, LM
   Jashal, BK
   Martinez-Vidal, F
   Oyanguren, A
   Roy, S
   Sain, R
   Sinha, R
TI Radiative b-baryon decays to measure the photon and b-baryon polarization
SO European Physical Journal C
JI Eur. Phys. J. C
PY 2019
BP 634 - 10pp
VL 79
IS 7
DI 10.1140/epjc/s10052-019-7123-7
LA English
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.
ER