Collaboration Meeting CERN, 6-10 Feb 2012 Collaboration Meeting CERN, 6-10 Feb 2012 Agustín Sánchez Losa IFIC (CSIC – Universitat de València)

Outline Correlation "α vs β" Likelihood PEX (PseudoEXperiments) First results To-Do List 6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting2

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting3 0.0<β< <β<1.5

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting4 0.0<β< <β<1.5 MEAN(Log(α)) Β slice

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting5 PS Analysis β 1 st Aprox.

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting6 PS Analysis β 1 st Aprox. PS Analysis β 1 st Aprox.

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting7 DATA MC log(α) Nhits β β β β log(α) ββ β β Nhits β β log(α)

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting8 PS Analysis β 1 st Aprox.

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting9 Comparison under same conditions: – Fixed search – δ = 0° – Cut N52 – Same systematics (OFF for number of hits) – Same ingredients (PDFs) – Same statistics: pex for background 1000 pex for signal up to 20

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting10  nsig 0: 0.14  nsig 1: 0.98  nsig 2: 1.95  nsig 3: 2.96  nsig 4: 3.96  nsig 5: 4.95  nsig 6: 5.92  nsig 7: 6.92  nsig 8: 7.89  nsig 9: 8.90  nsig 10: 9.90 Means Fitted Signal

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting11  nsig 0: 0.2  nsig 1: 21.7  nsig 2: 56.2  nsig 3: 81.3  nsig 4: 93.2  nsig 5: 98.0 % events above 3σ Q distribution  Q = σ Threshold PS Analysis

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting12  nsig 0: 0.2  nsig 1: 24.7  nsig 2: 55.6  nsig 3: 81.6  nsig 4: 94.0  nsig 5: 98.1 % events above 3σ Q distribution  Q = σ Threshold β 1 st Aprox.  nsig 0: 0.2  nsig 1: 21.7  nsig 2: 56.2  nsig 3: 81.3  nsig 4: 93.2  nsig 5: 98.0 PS Analysis

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting13  nsig 0: 4.1  nsig 1: 51.4  nsig 2: 83.9  nsig 3: 95.9  nsig 4: 98.9  nsig 5: 99.8 % events above 2σ Q distribution  Q = σ Threshold β 1 st Aprox.  nsig 0: 4.2  nsig 1: 59.3  nsig 2: 86.6  nsig 3: 96.1  nsig 4: 99.1  nsig 5: 99.8 PS Analysis β 1 st Aprox. % events above 2σ 2σ Threshold  Q = 0.96

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting14

6-10 Feb 2012Agustín Sánchez Losa – CERN Collaboration Meeting To-Do List Solve the problems with the PDFs Make additional checks with higher statistics Compute discovery power curves …adapt it for a time dependent search 15