LHCb - Minimum Bias physics plans and MC framework - EPFL

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¯Λ/Λ ratio - MC 5 TeV Fit of the mass plots in each η bin → nr. the signal and background events; LHCb MC 5 TeV/beam LHCb MC 5 TeV/beam Λ 3.5
A glimpse to the first data LHCb very preliminary — Ks and Λ 450 GeV/beam m + - π π candidates/2 MeV 250 200 150 100 50 (LHCb 2009 data, preliminary) Integral 2045 χ 2 / ndf 121.65 / 95 Prob 0.034031 constant 17.704 ± 1.347 slope -0.025753 ± 0.002561 N signal 1079.6 ± 35.3 m 497.34 ± 0.15 σ m 4.3373 ± 0.1396 0 400 420 440 460 480 500 520 540 560 580 600 [MeV] m + - π π m +/- -/+ p π candidates/1 MeV 100 80 60 40 20 Integral 1019 χ 2 / ndf 137.5 / 95 Prob 0.0028713 constant 1.4664 ± 0.0619 threshold 1075.3 ± 0.9 N signal 257.61 ± 19.43 m σ m 1115.6 ± 0.1 1.3985 ± 0.1323 Ready for exciting physics results in 2010. (LHCb 2009 data, preliminary) 0 1060 1070 1080 1090 1100 1110 1120 1130 1140 1150 1160 [MeV] MCNet CERN R. Mures¸an, LHCb report – p.13/30 m +/- -/+ p π
Page 1 and 2: LHCb - Minimum Bias physics plans a
Page 3 and 4: LHCb detector LHCb detector is full
Page 5 and 6: y 5m Vertex Locator TT Magnet 5m T1
Page 7 and 8: First data analysis corresponds to
Page 13 and 14: Pseudorapidity range Studies of the
Page 15 and 16: (All) Inclusive measurements Partic
Page 17 and 18: Strangeness production No valence s
Page 19: V 0 - Observables of interest η, y
Page 23 and 24: J/ψ production J/ψ prompt product
Page 25 and 26: LHCb MC simulation The simulation a
Page 27 and 28: Generation of physics events The ge
Page 29 and 30: PYTHIA 6.421.(2) LHAPDF 5.7.1 Photo
Page 31 and 32: PYTHIA @ LHCb PYTHIA 6.4 (LHAPDF-CT
Page 33 and 34: Other generators in Gauss Gauss all
Page 39 and 40: BCVEGPY Other generators in Gauss e
Page 41 and 42: BCVEGPY SHERPA 1.3. Other generator
Page 43 and 44: Inclusive production MCNet CERN R.
Page 45 and 46: Inclusive production Inclusive prod
Page 47: Thanks Several people helped me to

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