Measurement of the inclusive jet cross section in pp collisions at \/s = 1.8 TeV
Physical Review D 64:3 (2001)
Abstract:
We present results from the measurement of the inclusive jet cross section for jet transverse energies from 40 to 465 GeV in the pseudorapidity range 0.1< | ?7|< 0.7. The results are based on 87 pb~' of data collected by the CDF Collaboration at the Fermilab Tevatron collider. The data are consistent with previously published results. The data are also consistent with QCD predictions given the flexibility allowed from current knowledge of the proton parton distributions. We develop a new procedure for ranking the agreement of the parton distributions with data and find that the data are best described by QCD predictions using the parton distribution functions which have a large gluon contribution at high ET (CTEQ4HJ).Observation of orbitally excited B mesons in pp虅 collisions at 鈭歴=1.8 TeV
Physical Review D 64:7 (2001)
Abstract:
We measure the relative rate of production of orbitally excited (L=1) states of B mesons (B**) by observing their decays into B蟺卤. We reconstruct B mesons through semileptonic decay channels using data collected pp虅 collisions at 鈭歴= 1.8 TeV. The fraction of light B mesons that are produced as L= 1B** states is measured to be 0.28卤0.06(stat)卤0.03(syst). We also measure the collective mass of the B** states, and quantify the result by quoting the (model-dependent) mass of the lowest B** state to be m(B51猎奇入口 of B Decays to Charmonium States: B-->eta(c)K and B --> chi(c0)K.
Phys Rev Lett 86:1 (2001) 30-34
Abstract:
In a sample of 9.66x10(6)B&Bmacr; pairs collected with the CLEO detector we make the first observation of B decays to an eta(c) and a kaon. We measure branching fractions B(B+-->eta(c)K+) = (0.69(+0.26)(-0.21)+/-0.08+/-0.20)x10(-3) and B(B degrees -->eta(c)K degrees ) = (1.09(+0.55)(-0.42)+/-0.12+/-0.31)x10(-3), where the first error is statistical, the second is systematic, and the third is from the eta(c) branching fraction uncertainty. From these we extract the eta(c) decay constant in the factorization approximation, f(eta(c)) = 335+/-75 MeV. We also search for B decays to a chi(c0) and a kaon. No evidence for a signal is found and we set 90% C.L. upper limits: B(B+-->chi(c0)K+)<4.8x10(-4) and B(B degrees -->chi(c0)K degrees )<5.0x10(-4).Evidence for the decay D0鈫�K+蟺-蟺+蟺- -: art. no. 111101
PHYSICAL REVIEW D 64:11 (2001) ARTN 111101
Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at 鈭�s=1.8 TeV - art. no. 032002
PHYSICAL REVIEW D 64:3 (2001) ARTN 032002