Searches for new physics in events with a photon and [Formula Presented]-quark jet at CDF
We have searched for evidence of physics beyond the standard model in events that include an energetic photon and an energetic b-quark jet, produced in (Formula presented) of (Formula presented) collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This signature, containing at least one gauge boson and a third-generation quark, could arise in the production and decay of a pair of new particles, such as those predicted by supersymmetry, leading to a production rate exceeding standard model predictions. We also search these events for anomalous production of missing transverse energy, additional jets and leptons (Formula presented) (Formula presented) and (Formula presented) and additional b quarks. We find no evidence for any anomalous production of (Formula presented) or (Formula presented) events. We present limits on two supersymmetric models: a model where the photon is produced in the decay (Formula presented) and a model where the photon is produced in the neutralino decay into the gravitino LSP, (Formula presented) We also present our limits in a model-independent form and test methods of applying model-independent limits. © 2002 The American Physical Society.
Affolder, T; Akimoto, H; Akopian, A; Albrow, MG; Amaral, P; Amidei, D; Anikeev, K; Antos, J; Apollinari, G; Arisawa, T; Artikov, A; Asakawa, T; Ashmanskas, W; Azfar, F; Azzi-Bacchetta, P; Bacchetta, N; Bachacou, H; Bailey, S; Barbaro, PD; Barbaro-Galtieri, A; Barnes, VE; Barnett, BA; Baroiant, S; Barone, M; Bauer, G; Bedeschi, F; Belforte, S; Bell, WH; Bellettini, G; Bellinger, J; Benjamin, D; Bensinger, J; Beretvas, A; Berge, JP; Berryhill, J; Bhatti, A; Binkley, M; Bisello, D; Bishai, M; Blair, RE; Blocker, C; Bloom, K; Blumenfeld, B; Blusk, SR; Bocci, A; Bodek, A; Bokhari, W; Bolla, G; Bonushkin, Y; Bortoletto, D; Boudreau, J; Brandl, A; Brink, SV; Bromberg, C; Brozovic, M; Brubaker, E; Bruner, N; Buckley-Geer, E; Budagov, J; Budd, HS; Burkett, K; Busetto, G; Byon-Wagner, A; Byrum, KL; Cabrera, S; Calafiura, P; Campbell, M; Carithers, W; Carlson, J; Carlsmith, D; Caskey, W; Castro, A; Cauz, D; Cerri, A; Chan, AW; Chang, PS; Chang, PT; Chapman, J; Chen, C; Chen, YC; Cheng, MT; Chertok, M; Chiarelli, G; Chirikov-Zorin, I; Chlachidze, G; Chlebana, F; Christofek, L; Chu, ML; Chung, YS; Ciobanu, CI; Clark, AG; Connolly, A; Conway, J; Cordelli, M; Cranshaw, J; Cropp, R; Culbertson, R; Dagenhart, D; D’Auria, S; DeJongh, F
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