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Measurement of the associated 纬+渭卤 production cross section in pp虅 collisions at 鈭歴=1.8 TeV

Physical Review D Particles Fields Gravitation and Cosmology 60:9 (1999) 1-5

Authors:

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P De Barbara, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Bartalini, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettin, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, C Bromberg, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, Y Cen, F Cervelli, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S Dell'Agnello, M Dell'Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, JR Dittmann, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely

Abstract:

We present the first measurement of associated direct photon+muon production in hadronic collisions, from a sample of 1.8 TeV pp collisions recorded with the Collider Detector at Fermilab. Quantum chromodynamics (QCD) predicts that these events are primarily from the Compton scattering process cg鈫抍纬, with the final state charm quark producing a muon. Hence this measurement is sensitive to the charm quark content of the proton. The measured cross section of 29卤9 pb is compared to a leading-order QCD parton shower model as well as a next-to-leading-order QCD calculation. 漏1999 The American Physical Society.

Limits of the separated-path Ramsey atom interferometer

Journal of Physics B Atomic Molecular and Optical Physics 32:20 (1999) 5033-5045

Authors:

RM Godun, CL Webb, PD Featonby, MB D'Arcy, MK Oberthaler, GS Summy, CJ Foot, K Burnett

Abstract:

We describe in detail our caesium atom interferometer which uses a combination of microwaves and momentum-changing adiabatic transfer pulses. This combination allows us to achieve spatial separation between the arms of the interferometer. We account for the observed visibility of the resulting interference fringes and find that the effects which contribute the most are optical pumping and magnetic fields.

Search for Scalar Top and Scalar Bottom Quarks in $p\bar{p}$ collisions at $\sqrt{s}=1.8$ TeV

ArXiv hep-ex/9910049 (1999)

Production of Y(1S) Mesons from chib Decays in pp(bar) Collisions at sqrt(s)=1.8 TeV

ArXiv hep-ex/9910025 (1999)

Authors:

CDF Collaboration, T Affolder

Search for a W' Boson via the Decay Mode W' -> mu nu in 1.8 TeV p-pbar Collisions

ArXiv hep-ex/9910004 (1999)

Authors:

CDF Collaboration, F Abe