Search for charmless decays of B hadrons in hadronic and radiative modes using the DELPHI detector at LEP

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 1996-03, Vol.371 (1), p.212-214
• Main Authors: Battaglia, M, Katsanevas, S, Liko, D, Nikolaidou, R
• Format: Article
• Language: English
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/0168-9002(95)01160-9

Charmless hadronic decay of beauty particles can proceed through both tree level diagrams involving b → u transitions and penguin processes. Radiative (b → s γ) decays are pure penguin processes. These decays are of special interest as a test of the loop structure of the standard model and in connection with the measurement of CP violation in the B sector. A search for charmless hadronic and radiative decays of B mesons has been performed with the DELPHI detector at the LEP collider. The high tracking resolution, obtained with the silicon microvertex detector, provides efficient b-tagging and rejection of combinatorial background. In addition, the particle identification capabilities of the DELPHI ring imaging Cherenkov detector allow the separation of channels with a kaon from the pure multi-pion final states.