-
Notifications
You must be signed in to change notification settings - Fork 0
/
ChargedPionDecay.C
64 lines (34 loc) · 1.16 KB
/
ChargedPionDecay.C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
//John Campbell
//a simple graphic which displays the Feynman diagram for Charged Pion decay
void ChargedPionDecay()
{
TCanvas *c1 = new TCanvas("c1", "A canvas", 10,10, 600, 300);
c1->Range(0, 0, 140, 60);
Int_t linsav = gStyle->GetLineWidth();
gStyle->SetLineWidth(3);
TLatex t;
t.SetTextAlign(22);
t.SetTextSize(0.1);
TArc *a = new TArc(30, 30, 20*sqrt(2), 135, 225);
a->Draw();
a->SetLineColor(6);
t.DrawLatex(10,30,"#pi^{+}");
TLine * l;
l = new TArrow(10, 10, 30, 30,0.05,">"); l->Draw();
l->SetLineColor(6);
l = new TArrow(10, 50, 30, 30,0.05,"<"); l->Draw();
l->SetLineColor(6);
t.DrawLatex(7,6,"#bar{d}");
t.DrawLatex(7,55,"u");
TCurlyLine *z0 = new TCurlyLine(30, 30, 110, 30);
z0->SetWavy();
z0->Draw();
t.DrawLatex(70, 37.5,"W^{+}");
l = new TArrow(110, 30, 130, 10,0.05,">"); l->Draw();
l->SetLineColor(4);
l = new TArrow(110, 30, 130, 50,0.05,"<"); l->Draw();
t.DrawLatex(135,6,"#nu");
t.DrawLatex(135,55,"#mu^{+}");
c1->Update();
gStyle->SetLineWidth(linsav);
}