Direct photon cross section with conversions at CDF

Published

Journal Article

We present a measurement of the isolated direct photon cross section in [Formula Presented] collisions at [Formula Presented] and [Formula Presented] using data collected between 1994 and 1995 by the Collider Detector at Fermilab (CDF). The measurement is based on events where the photon converts into an electron-positron pair in the material of the inner detector, resulting in a two track event signature. To remove [Formula Presented] and [Formula Presented] events from the data we use a new background subtraction technique which takes advantage of the tracking information available in a photon conversion event. We find that the shape of the cross section as a function of photon [Formula Presented] is poorly described by next-to-leading-order QCD predictions, but agrees with previous CDF measurements. © 2004 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Acosta, D; Affolder, T; Albrow, MG; Ambrose, D; Amidei, D; Anikeev, K; Antos, J; Apollinari, G; Arisawa, T; Artikov, A; Ashmanskas, W; Azfar, F; Azzi-Bacchetta, P; Bacchetta, N; Bachacou, H; Badgett, W; Barbaro-Galtieri, A; Barnes, VE; Barnett, BA; Baroiant, S; Barone, M; Bauer, G; Bedeschi, F; Behari, S; Belforte, S; Bell, WH; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Binkley, M; Bisello, D; Bishai, M; Blair, RE; Blocker, C; Bloom, K; Blumenfeld, B; Bocci, A; Bodek, A; Bolla, G; Bolshov, A; Bortoletto, D; Boudreau, J; Bromberg, C; Brubaker, E; Budagov, J; Budd, HS; Burkett, K; Busetto, G; Byrum, KL; Cabrera, S; Campbell, M; Carithers, W; Carlsmith, D; Castro, A; Cauz, D; Cerri, A; Cerrito, L; Chapman, J; Chen, C; Chen, YC; Chertok, M; Chiarelli, G; Chlachidze, G; Chlebana, F; Chu, ML; Chung, JY; Chung, WH; Chung, YS; Ciobanu, CI; Clark, AG; Coca, M; Connolly, A; Convery, M; Conway, J; Cordelli, M; Cranshaw, J; Culbertson, R; Dagenhart, D; D'Auria, S; Barbaro, P; Cecco, S; Dell'Agnello, S; Dell'Orso, M; Demers, S; Demortier, L; Deninno, M; Pedis, D; Derwent, PF; Dionisi, C; Dittmann, JR; Dominguez, A; Donati, S; D'Onofrio, M; Dorigo, T; Eddy, N; Erbacher, R; Errede, D; Errede, S

Published Date

  • January 1, 2004

Published In

Volume / Issue

  • 70 / 7

Electronic International Standard Serial Number (EISSN)

  • 1550-2368

International Standard Serial Number (ISSN)

  • 1550-7998

Digital Object Identifier (DOI)

  • 10.1103/PhysRevD.70.074008

Citation Source

  • Scopus