A High-P[sub T] Trigger for the HERA-B Experiment

Mohapatra, A. K.
September 2001
International Journal of Modern Physics A: Particles & Fields; G;9/10/2001 Supplement C, Vol. 16, p1156
Academic Journal
We have constructed a high-p[sub T] trigger for the HERA-B experiment at DESY. The HERA-B experiment produces B mesons by inserting wire targets into the halo of the proton beam circulating in HERA. The high-pt trigger records events that contain tracks that have high transverse momentum with respect to the beam. Such a trigger is efficient for recording B → π[sup +] &pi[sup -], B → K[sup -]π[sup +], B[sub s] → K[sup +]K[sup -], B[sub s] → D[sup -, sub s] π[sup +] and other topical hadronic B decays. These decays provide sensitivity to the internal angles alpha and gamma of the CKM unitarity triangle, and they also can be used to measure or constrain the B[sub s] - &Bmacr;[sub s] mixing parameter χ[sub s].


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