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# Background Nomenclature - PowerPoint PPT Presentation

Background Nomenclature. TK Hemmick. Here are a few numbers. I(spectrum; range) is the integral of any spectrum over an specific range..

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## PowerPoint Slideshow about ' Background Nomenclature' - akiko

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### Background Nomenclature

TK Hemmick

• I(spectrum; range) is the integral of any spectrum over an specific range..

• N is a numerical factor that often (but not always) results from the ratio of various integrals. On the following slides is what I believe that both Ermias and Mihael did.

• N++ = I(FG++,non-jet) / I(BG++, non-jet)

• N-- = I(FG--, non-jet)/I(BG--,non-jet)

• Nermias = SQRT(N++N--)

• Background = Spectrum(BG+-) * Nermias

• N++ = I(FG++,high mass)/I(BG++, high mass)

• N-- = I(FG--, high mass)/I(BG--, high mass)

• I++ = N++ * I(BG++,WHOLE SPACE)

• I-- = N-- * I(BG--,WHOLESPACE)

• F = 2*SQRT(I++ *I--)/I(BG+-,WHOLESPACE)

• Background = F * Spectrum(BG+-)