Here, a search for the exotic meson X(5568) decaying into the B$0\atop{s}$π± final state is performed using data corresponding to 9.6 fb-1 from $p\bar{p}$ collisions at $\sqrt{s}$ = 1960 GeV recorded ...by the Collider Detector at Fermilab. No evidence for this state is found and an upper limit of 6.7% at the 95% confidence level is set on the fraction of B$0\atop{s}$ produced through the X(5568)→B$0\atop{s}$π± process.
Neutrino tridents and W-Z interference MISHRA, S. R; RABINOWITZ, S. A; QUINTAS, P. Z ...
Physical review letters,
06/1991, Letnik:
66, Številka:
24
Journal Article
Recenzirano
We present a measurement of neutrino tridents, muon pairs induced by neutrino scattering in the Coulomb field of a target nucleus, in the Columbia-Chicago-Fermilab-Rochester neutrino experiment at ...the Fermilab Tevatron. The observed number of tridents after geometric and kinematic corrections, 37.0{plus minus}12.4, supports the standard-model prediction of 45.3{plus minus}2.3 events. This is the first demonstration of the {ital W}-{ital Z} destructive interference from neutrino tridents, and rules out, at 99% C.L., the {ital V}-{ital A} prediction without the interference.
Measurement of the W boson mass Abe, F; Albrow, MG; Amidei, D ...
Physical review. D, Particles and fields,
11/1995, Letnik:
52, Številka:
9
Journal Article
A high-statistics study by the Columbia-Chicago-Fermilab-Rochester Collaboration of opposite-sign dimuon events induced by neutrino-nucleon scattering at the Fermilab Tevatron is presented. A sample ...of 5044 nusub mu and 1062 bar nusub mu induced musup minus plusmusup plus minus events with ital Psub mu1ge9 GeV/ital c, ital Psub mu2ge5 GeV/ital c, 30leital Esub nule600 GeV, and l angleital Qsup 2r angle=22.2 GeVsup 2/ital csup 2 is observed. The data support the slow-rescaling model of charm production with a value of ital msub ital c=1.31plus minus0.24 GeVsup 2/ital csup 2. The first measurement of the ital Qsup 2 dependence of the nucleon strange quark distribution ital xs(ital x) is presented. The data yield the Cabibbo-Kobayashi-Maskawa matrix element vert barital Vsub ital cital dvert bar=0.209plus minus0.012 and the nucleon fractional strangeness content etasub ital s=0.064sub minus0.007sup +0.008.
We have measured the strange-quark content of the nucleon, {eta}{sub {ital s}}={sup +0.012}{sub {minus}0.08}, and the Kobayashi-Maskawa matrix element {vert bar}{ital V}{sub {ital c}{ital d}}{vert ...bar}=0.220{sup +0.015}{sub {minus}0.018} using a sample of 1797 {nu}{sub {mu}}- and {bar {nu}}{sub {mu}}-induced {mu}{sup {minus}}{mu}{sup +} events with {ital P}{sub {mu}}{ge}9 GeV/{ital c} and 30{le}{ital E}{sub {nu}}{le}600 GeV. The data are consistent with the slow-rescaling hypothesis of charm production in {nu}-{ital N} scattering and within this formalism yield a value of the charm-quark mass parameter {ital m}{sub {ital c}}=1.31{sub {minus}0.48}{sup +0.64} GeV/{ital c}{sup 2}.
We report a precise measurement of the weak mixing angle from the ratio of neutral current to charged current inclusive cross sections in deep-inelastic neutrino-nucleon scattering. The data were ...gathered at the CCFR neutrino detector in the Fermilab quadrupole-triplet beam, with neutrino energies up to 600 GeV. Using the on-shell definition, sinsup 2thetasub ital W==1minusital Msub ital Wsup 2/ital Msub ital Zsup 2, we obtain sinsup 2thetasub ital W=0.2218plus minus0.0025(stat)plus minus0.0036(expt syst)plus minus0.0037(model).
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