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arXiv · hep-ex/0103028

A High-Pt Trigger for the HERA-B Experiment

A. K. Mohapatra
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Abstract

We have constructed a high-$p_T$ 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 $B \to π^+π^-$, $B \to K^-π^+$, $B_s \to K^+ K^-$, $B_s \to D_s^-π^+$, and other topical hadronic B decays. These decays provide sensitivity to the internal angles $α$ and $γ$ of the CKM unitarity triangle, and they also can be used to measure or constrain the $B_s$-$\bar B_s$ mixing parameter $x_s$.

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A. K. Mohapatra. 2001-03-18. A High-Pt Trigger for the HERA-B Experiment. https://doi.org/10.1142/s0217751x01009181

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