4,529 research outputs found
A catalogue of the birds of the West Indies : which do not occur elsewhere in North America north of Mexico / by C. J. Maynard.
No full textMeasurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
Card from May Lou and Maynard Tuisley, Richmond, Virginia, to J. C. Faulkner, Mechanicsburg, Pennsylvania, December 20, 1944
No full textDavid J. Bieber and Maynard V. Campbell
No full textPhotograph of Loma Linda University president, David J. Bieber and Loma Linda University board of trustees member, Maynard V. Campbell. This photograph was taken during a press conference when La Sierra College merged with Loma Linda University in 1967.16 x 20.5 c
Alice Maynard Goodwin
No full textAlice Maynard Goodwin, the wife of Charles C. Goodwin, was an active clubwoman and poet
Measurement of the branching fraction
No full textThe B
0
s
→ J/ψK
0
S
branching fraction is measured in a data sample corresponding to 0.41 fb−1
of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to
the penguin contributions affecting the sin 2β measurement from B
0
→ J/ψK
0
S
. The time-integrated
branching fraction is measured to be B(B
0
s
→ J/ψK
0
S
) = (1.83±0.28)×10−5
. This is the most precise
measurement to date
- …
