//This code creates 5 histograms, two seperate histograms using input object (helicity, etc.) and input variable(fadc_a)(h0, h1), one for the subtraction of these 2 (h2), one for addition of the two (h3), then  final one divividing them (h4).

void hsad() {
    // Creates 2 histograms
    TH1F* h0 = new TH1F("h0", "fadc_a, h0", 1000, 0, 25000); //Adjust "fadc_a" to any variable in tree
    TH1F* h1 = new TH1F("h1", "fadc_a, h1", 1000, 0, 25000);

    // Fills histograms with different helicity (can also test differences in objects other than helicity)
    T->Draw("fadc_a>>h0", "helicity==0"); 
    T->Draw("fadc_a>>h1", "helicity==1");

    // Subtracts h0 - h1 and writes to new histogram "h2"
    TH1F* h2 = (TH1F*)h0->Clone("h2");
    h2->Add(h1, -1);

    // Reinitializes h0
    h0->Reset();  
    T->Draw("fadc_a>>h0", "helicity==0");

    // Adds h0 + h1 and fills new histogram "h3"
    TH1F* h3 = (TH1F*)h0->Clone("h3");
	h3->SetName("fadc_a, +"); 
	h3->SetTitle("fadc_a, +;x-axis;y-axis"); //OPTIONAL- set name and axis for addition histogram
    h3->Add(h1, 1);

    // Divides h2 / h3 and fills new histogram "h4"
    TH1F* h4 = (TH1F*)h2->Clone("h4");
	h4->SetName("fadc_a"); //Var
	h4->SetTitle("fadc_a;x-axis;y-axis"); //Set name of final histogram and set x and y axis names
    h4->Divide(h3);

     // Reinitializes h0 and h2
    h0->Reset();  
    T->Draw("fadc_a>>h0", "helicity==0");
    h2->Reset();
    h2->Add(h1, -1);
	h2->SetName("fadc_a, -");
	h2->SetTitle("fadc_a, -;x-axis;y-axis"); //OPTIONAL- set name and axis for subtraction histogram
	h0->Reset();  
    T->Draw("fadc_a>>h0", "helicity==0");

	//gPad->SetLogx();
    // Draw final result
    h4->Draw(); //Change "h4" to desired histogram
}