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- R. Aaij, C. Abellan Beteta, +497 authors O. Shevchenko
- 2012

Measurement of ψ(2S) meson production in pp collisions at √ s = 7 TeV Abstract The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at √ s = 7 TeV has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb −1. The ψ(2S) mesons are reconstructed in the decay channels… (More)

- C. Bauer, Kum Leng Chin, Vanessa Chang
- ECIS
- 2000

This paper examines the question: How do cultural differences influence students' perceptions of Web-based learning? Research on cultural differences by Hofstede [1] [2] is used as a foundation to study students' perceptions of Web-based learning. A survey of an on-line course has been conducted, linking the students' cultural background to usage patterns,… (More)

- R. Aaij, C. Abellan Beteta, +497 authors O. Shevchenko
- 2012

The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B + → J /ψK + , B 0 → J /ψK * 0 and B 0 → D * − μ + ν μ decay modes with 0.37 fb −1 of data… (More)

- Clemens Bauer, Gunnar S Bali, Antonio Pineda
- Physical review letters
- 2012

We compute the static self-energy of SU(3) gauge theory in four spacetime dimensions to order α20 in the strong coupling constant α. We employ lattice regularization to enable a numerical simulation within the framework of stochastic perturbation theory. We find perfect agreement with the factorial growth of high order coefficients predicted by the… (More)

- Gunnar S Bali, Clemens Bauer, Antonio Pineda
- Physical review letters
- 2014

We determine the nonperturbative gluon condensate of four-dimensional SU(3) gauge theory in a model-independent way. This is achieved by carefully subtracting high-order perturbation theory results from nonperturbative lattice QCD determinations of the average plaquette. No indications of dimension-two condensates are found. The value of the gluon… (More)

- Bernhard Geringer, Wilfried Sihn, C. Bauer, Henrik Gommel
- Elektrotechnik und Informationstechnik
- 2012

We present a new algorithm for the reduction of one-loop tensor Feynman integrals within the framework of the XLOOPS project, covering both mathematical and programming aspects. The new algorithm supplies a clean way to reduce the one-loop one-, two-and three-point Feynman integrals with arbitrary tensor rank and powers of the propagators to a basis of… (More)

- R. Aaij, C. Abellan Beteta, +497 authors O. Shevchenko
- 2012

The production of Υ (1S), Υ (2S) and Υ (3S) mesons in proton-proton collisions at the centre-of-mass energy of √ s = 7 TeV is studied with the LHCb detector. The analysis is based on a data sample of 25 pb −1 collected at the Large Hadron Collider. The Υ mesons are reconstructed in the decay mode Υ → μ + μ − and the signal yields are extracted from a fit to… (More)

- A ZILLHARDT, C BAUER, L MOLE, J P BRAUN
- Archives françaises de pédiatrie
- 1956

- R. Aaij, C. Abellan Beteta, +497 authors Y. Shcheglov
- 2012

Measurement of relative branching fractions of B decays to ψ(2S) and J /ψ mesons Abstract The relative rates of B-meson decays into J /ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions (B) are measured to be B(B + → ψ(2S)K +) B(B + → J /ψK +) = 0.594 ± 0.006(stat) ±… (More)