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IFIC meeting 01/Feb/2012 Agustín Sánchez Losa
BEST LASER vs OFFICIAL OFFSETS
Last Fitted Signal > nsig0: > nsig1: > nsig3: > nsig5: > nsig7: > nsig9: Means Declination: 0°; Fixed Search; Systematics ON; Original code and ingredients;
Last Q stat Declination: 0°; Fixed Search; Systematics ON; Original code and ingredients; Mine: > th(3s): 4.65 > th(5s): Internal note: > th(3s): 3.53 > th(5s): Thresholds:
PEX structure Simulating experiments: – add_background from DATA histograms: Bgr& bgr.f_per_sindecl_vs_sindecl->GetRandom() (background rate for sin(δ))) TH1* nhits_atm_histogram (nhits in data) – add_signal_psfhistogram3d from MC histograms: TH3& psf_3d_histogram (3d histogram of log(α), sin(δ)and nhits for E-2 neutrinos) Computing likelihood: – lik_sb_with_hits with: Psf& psf.per_sr_vs_a(alpha) (psf for sin(δ)) Bgr& bgr.per_sr_vs_decl(decl) (background rate for sin(δ))) TH1* hist_E2 (nhits in MC) TH1* hist_atm (nhits in data) – Likelihood: r = SUM[log(ls + lb)]- nsig ls = nsig * psf.per_sr_vs_a(dist(ev.decl, ev.ra, decl, ra)) * prob_hit_E2; lb = bgr.per_sr_vs_decl(ev.decl) * prob_hit_atm; prob_hit_E2 = hist_E2->GetBinContent(hist_E2->FindBin(ev.nhits)); prob_hit_atm = hist_atm->GetBinContent(hist_atm->FindBin(ev.nhits));
PEX structure Simulating background: – add_background (from DATA histograms) – add_signal_psfhistogram3d (from MC histograms) Likelihood: – TH3& psf_3d_histogram[log(alpha),sin(δ),nhits] – lik_sb_with_hits: r = log(ls+lb)+µ TOT lb = B(TH2) · N hits (TH2[δ,nhits])
Adding beta Likelihood?:
Collaboration Meeting CERN, 6-10 Feb 2012 Collaboration Meeting CERN, 6-10 Feb 2012 Agustín Sánchez Losa IFIC (CSIC – Universitat de València)
Point Source Search with 2007 & 2008 data Claudio Bogazzi AWG videconference 03 / 09 / 2010.
Study the discovery potential as a function of the energy cutoff: - Modify ingredients for pex according to each flux model (Ecut) - Run pex for each.
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Collaboration Meeting Moscow, 6-10 Jun 2011 Collaboration Meeting Moscow, 6-10 Jun 2011 Agustín Sánchez Losa IFIC (CSIC – Universitat de València)
Bc → J/ Lifetime measurement Use 6.7 fb -1 and try two independent approaches Selection 1: no dependence of selection on decay time Fit fixes bkgd.
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