Backup SlidesDavid Doll
Beyond SM theories
Mark Wise paper
BBU starting point and expansionLook at 2.24 and 2.26 to see difference
between kinetic and pole scheme in hep-ph/0607316
Former Analysis extended
Novosibirsk function:
Argus function:
})/)](1[{ln5.0exp()( 220
2 mmAmf Source Babar doc
where: )4ln/()4lnsinh( m0 is peak position, σ is width, τ is tail parameter
]})/(1[exp{)/(1 22beambeam ExbExax Source Phys. Lett. B
241, 278 (1990)
where a and b are parameters to be fit
Y(3S) and Such PropertiesWidth = 20.5 +/- 2.5 MeV (hbar = 6.58 x
10^-16 eVs)Liftime = 3.2 x 10 ^-23 sBBbar decay > 96% of the time (PDG)
SVT Extended
Best angular information comes from inner points, not subject to multiple scattering.Particles with p_t less than 100MeV/c don’t make the drift chamber,
and only with p_t > 120 MeV/c is the drift chamber reliable.Goal of 70% eff. In tracking information for 50-120 MeV/c particles
Coverage is between 20.1 and 150.2 degrees.5 Layers, double sided, inside (junction side) measures z, outside
measures phi for first 3 layers, opposite for last 2.~150,000 channels Inner 3 layers for measuring impact parameters, outer two for
pattern recognition and low p_t tracking.
SVT Extended
dE/dx formula for charged particles (from infn):
Bethe-Bloch formula
MC simulation of SVT (source Babar doc).
DCH Extended
AUVAUVAUVA arrangement of the superlayers (10), each consisting of 4 layers.Axial (A) and stereo (U,V)
1.08%X0 at normal incidencedE/dx from ionization loss
DIRC extendedCherenkov Angle relation:Forward end has a mirror to reflect forward
propagating photonsIndex of refraction for fused silica = 1.473
nC /1cos
EMC extended
15.8 to 141.8o polar angle coverage (90% CM coverage)Energy resolution described empirically by:
where a represents fluctuations in photon statistics and electronic noise, and b, constant term, comes from non-uniformity in light collection, influence of material in front, and calibration uncertainty
Ultimately, a = 2.32% and b = 1.85%
bE
a
EE
4
Radiation length, corresponding to the length for an electron to drop to 1/e it’s energy, or 7/9 the mean free path for pair production of a photon.
EMC Extended
Source photon for low energy calibration from the process:
19F + n → 16N + α, 16N → 16O* + β, 16O*→ 16O + γ
IFR Extended21 active detector layers in the barrel, 18 in
the endcaps
Bakelite sheet bulk resistivity is 10^11 – 10^12 ohm cm
Gas: 56.7% Argon, 38.8% Freon 134a, and 4.5% isobutane
Graphite surfaces connected to ~8kV and ground.
IFR Extended
LST
Punzi FOM extended
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