E.L. Berger, H. Contopanagos, ANL-HEP-PR-95-85, hep-ph/9512212; S. Catani, M. Mangano, P. Nason, L. Trentadue, CERN-TH/96-21, hep-ph/9602208. Home/Search Document Not in Database Summary Related Articles Check |
This paper is cited in the following contexts:
Susy Contributions To - And Top Quark (1996) (Correct)
....Therefore the CDF tt cross section should be compatible with 2=3 to 1=2 times the QCD value. From the CDF data [11] oe t = 7:5 Sigma 1:8 pb; m t = 175:6 Sigma 9 GeV; 33) it is evident that the central value of their cross section is already higher than QCD estimate of oe t (175) 5:5 pb [23]. However taking a 1:64oe (90 CL) lower limit on both the quantities would correspond to a oe t of 4:5 pb to be compared with a QCD estimate of oe t (160) 9 pb [23] Thus a SUSY BR of 0:4 and ffl 3 = 2=3 is barely compatible with the CDF data [24] The corresponding compatibility with the D0= ....
.... 9 GeV; 33) it is evident that the central value of their cross section is already higher than QCD estimate of oe t (175) 5:5 pb [23] However taking a 1:64oe (90 CL) lower limit on both the quantities would correspond to a oe t of 4:5 pb to be compared with a QCD estimate of oe t (160) 9 pb [23]. Thus a SUSY BR of 0:4 and ffl 3 = 2=3 is barely compatible with the CDF data [24] The corresponding compatibility with the D0= cross section [12] oe t = 5:3 Sigma 1:6 pb; 34) is evidently easier to satisfy. It may be noted here that for the higgsino dominated region, the range of B S 0:45 ....
E.L. Berger, H. Contopanagos, ANL-HEP-PR-95-85, hep-ph/9512212; S. Catani, M. Mangano, P. Nason, L. Trentadue, CERN-TH/96-21, hep-ph/9602208.
Top Quark Physics at the 'Devatron' - Yuan (1995) (Correct)
....the top quark, the cross section oe t t for the QCD production processes q q; gg t t was measured to be 7:6 2:4 Gamma2:0 pb (by CDF) and 6:4 Sigma 2:2 pb (by D ) For comparison, the SM result for m t = 175GeV at p s = 1:8 TeV is oe t t = 5:52 0:07 Gamma0:45 pb quoted from Ref. [2] in which the effects of multiple soft gluon emissions have been properly resummed. Since the measurement of the cross section (obtained from the counting experiments, i.e. counting the observed total t t event numbers in various decay modes) and the measurement of the mass of the top quark ....
....quarks) To test QCD, we need an accurate measurement for oe t t which is experimentally limited by the systematic uncertainties. It is concluded in Ref. 1] that the experimental error in oe t t is ffioe t t 10 which is about the same as the theoretical error for calculating oe t t [2]. Note that counting the dilepton event rate is a direct measurement of oe t t , and the statistical error for the dilepton sample of t t events is about 1= p 100 = 10 . 3.2 Mass of the top quark m t With enough t t pair events, the accuracy in measuring m t will be determined by the ....
E.L. Berger and H. Contopanagos, ANL-HEP-PR-95-31, May 1995.
Inclusive Prompt Photon Production in Hadronic Final States of - Gamma Annihilation Self-citation (Berger Guo Qiu) (Correct)
....part of quark, anti quark, or gluon jets , it is evident that photon isolation reduces the contribution from fragmentation terms. In this paper, we deal with cross sections for energetic inclusive photons, and the extraction of the photon fragmentation functions D(z; 2 ) In another paper [8], we will present a systematic and analytic treatment of cross sections for isolated photons, and show over what regions of z the functions D(z; 2 ) may be determined from data on isolated photon production in e e Gamma flX. We will also point out the breakdown of factorization of the ....
....is that photons are observed and cross sections are measured reliably only when the photons are relatively isolated. Since fragmentation is a process in which photons are part of quark, antiquark, and gluon jets, isolation reduces the contribution from fragmentation terms. In a forthcoming paper [8], we will examine in detail the behavior of the isolated prompt photon cross section. In this paper we have presented a unified treatment of inclusive prompt photon production in hadronic final states in e e Gamma annihilation. We have computed analytically the direct photon contribution ....
E. L. Berger, X. Guo, and J.-W. Qiu, Argonne Preprint, ANL-HEP-PR-95-48.
Resummation Of Threshold Corrections In Qcd To Power.. - Beneke Stanford (Correct)
No context found.
E.L. Berger and H. Contopanagos, Phys. Lett. B 361, 115 (1995); ANLHEP -PR-95-82 (hep-ph/9603326).
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