Searches for new physics in events with a photon and b-quark jet at CDF

Affolder, T. et al. (2002) Searches for new physics in events with a photon and b-quark jet at CDF. Physical Review D, 65(5), art 052006. (doi: 10.1103/PhysRevD.65.052006)

Abstract

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 85 pb(-1) of (p) over barp 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 (e, mu and tau), and additional b quarks. We find no evidence for any anomalous production of gammab or gammab + X events, We present limits on two supersymmetric models: a model where the photon is produced in the decay (χ) over tilde (0)(2)→gamma(χ) over tilde (0)(1), and a model where the photon is produced in the neutralino decay into the gravitino LSP, (χ) over tilde (0)(1)→gamma(G) over tilde. We also present our limits in a model-independent form and test methods of applying model-independent limits.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Bell, Dr William
• Authors: Affolder, T., Akimoto, H., Akopian, A., Albrow, M.G., 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., de Barbaro, P., Barbaro-Galtieri, A., Barnes, V.E., Barnett, B.A., Baroiant, S., Barone, A., Bauer, G., Bedeschi, F., Belforte, S., Bell, W.H., Bellettini, G., Bellinger, J., Benjamin, D., Bensinger, J., Beretvas, A., Berge, J.P., Berryhill, J., Bhatti, A., Binkley, M., Bisello, D., Bishai, M., Blair, R.E., Blocker, C., Bloom, K., Blumenfeld, B., Blusk, S.R., Bocci, A., Bodek, A., Bokhari, W., Bolla, G., Bonushkin, Y., Bortoletto, D., Boudreau, J., Brandl, A., van den Brink, S., Bromberg, C., Brozovic, M., Brubaker, E., Bruner, N., Buckley-Geer, E., Budagov, J., Budd, H.S., Burkett, K., Busetto, G., Byon-Wagner, A., Byrum, K.L., Cabrera, S., Calafiura, P., Campbell, M., Carithers, W., Carlson, J., Carlsmith, D., Caskey, W., Castro, A., Cauz, D., Cerri, A., Chan, A.W., Chang, P.S., Chang, P.T., Chapman, J.N., Chen, C., Chen, Y.C., Cheng, M.T., Chertok, M., Chiarelli, G., Chirikov-Zorin, I., Chlachidze, G., Chlebana, F., Christofek, L., Chu, M.L., Chung, Y.S., Ciobanu, C.I., Clark, A., Connolly, A., Conway, J., Cordelli, M., Cranshaw, J., Cropp, R., Culbertson, R., Dagenhart, D., D'Auria, S., DeJongh, F., Dell'Agnello, S., Dell'Orso, M., Demortier, L., Deninno, M., Derwent, P.F., Devlin, T., Dittmann, J.R., Dominguez, A., Donati, S., Done, J., D'Onofrio, M., Dorigo, T., Eddy, N., Einsweiler, K., Elias, J.E., Engels, E., Erbacher, R., Errede, D., Errede, S., Fan, Q., Feild, R.G., Fernandez, J.P., Ferretti, C., Field, R.D., Fiori, I., Flaugher, B., Foster, G.W., Franklin, M., Freeman, J., Friedman, J., Frisch, H.J., Fukui, Y., Furic, I., Galeotti, S., Gallas, A., Gallinaro, A., Gao, T., Garcia-Sciveres, M., Garfinkel, A.F., Gatti, P., Gay, C., Gerdes, D.W., Giannetti, P., Glagolev, V., Glenzinski, D., Gold, M., Goldstein, J., Gorelov, I., Goshaw, A.T., Gotra, Y., Goulianos, K., Green, C., Grim, G., Gris, P., Groer, L., Grosso-Pilcher, C., Guenther, M., Guillian, G., da Costa, J.G., Haas, R.M., Haber, C., Hahn, S.R., Hall, C., Handa, T., Handler, R., Hao, W., Happacher, F., Hara, K., Hardman, A.D., Harris, R.M., Hartmann, F., Hatakeyama, K., Hauser, J., Heinrich, J., Heiss, A., Herndon, M., Hill, C., Hoffman, K.D., Holck, C., Hollebeek, R., Holloway, L., Hughes, R., Huston, J., Huth, J., Ikeda, H., Incandela, J., Introzzi, G., Iwai, J., Iwata, Y., James, E., Jones, M., Joshi, U., Kambara, H., Kamon, T., Kaneko, T., Karr, K., Kasha, H., Kato, Y., Keaffaber, T.A., Kelley, K., Kelly, M., Kennedy, R.D., Kephart, R., Khazins, D., Kikuchi, T., Kilminster, B., Kim, B.J., Kim, D.H., Kim, H.S., Kim, M.J., Kim, S.B., Kim, S.H., Kim, Y.K., Kirby, A., Kirk, M., Kirsch, L., Klinenko, S., Koehn, P., Kondo, K., Konigsberg, J., Korn, A., Korytov, A., Kovacs, E., Kroll, J., Kruse, M., Kuhlmann, S.E., Kurino, K., Kuwabara, T., Laasanen, A.T., Lai, N., Lami, S., Lammel, S., Lancaster, J., Lancaster, M., Lander, R., Lath, A., Latino, G., LeCompte, T., Lee, A.A., Lee, K., Leone, S., Lewis, J.D., Lindgren, M., Liss, T.M., Liu, J.B., Liu, Y.C., Litvintsev, D.O., Lobban, O., Lockyer, N., Loken, J., Loreti, M., Lucchesi, D., Lukens, P., Lusin, S., and Lyons, L.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review D
• Publisher: American Physical Society
• ISSN: 1550-7998
• ISSN (Online): 1089-4918