def draw_bg_channels():
gluon_style = dict(style='linear loopy', xamp=.03, yamp=.03, nloops=4)
fig = plt.figure(figsize=(10., 10.))
ax = fig.add_axes([0, 0, 1, 1], frameon=False)
d = f.Diagram(ax)
in1 = d.vertex(xy=(.1, .7), marker='')
in2 = d.vertex(xy=(.1, .3), marker='')
v1 = d.vertex(xy=(.45, .7))
v2 = d.vertex(xy=(.45, .3))
# v3 = d.vertex(xy=(.7,.7))
out1 = d.vertex(xy=(.8, .7), marker='')
out2 = d.vertex(xy=(.8, .3), marker='')
q1 = d.line(v1, out1)
q2 = d.line(v2, in2)
pr = d.line(v1, v2)
q3 = d.line(in1, v1, **gluon_style)
q4 = d.line(v2, out2, style='wiggly', arrow=False, nwiggles=3)
q1.text('$b$', fontsize=20, t=0.9, y=0.02)
q2.text(r'$\bar{b}$', fontsize=20, t=0.9, y=-0.02)
q4.text(r'$Z$', fontsize=20, t=0.8, y=0.05)
d.plot()
plt.savefig('bgZb.pdf')
plt.show()
plt.clf()
return
def draw_lo_channels():
fig = plt.figure(figsize=(10., 10.))
ax = fig.add_axes([0, 0, 1, 1], frameon=False)
d = f.Diagram(ax)
in1 = d.vertex(xy=(.1, .7), marker='')
in2 = d.vertex(xy=(.1, .3), marker='')
v1 = d.vertex(xy=(.4, .5))
out1 = d.vertex(xy=(.8, .5), marker='')
q1 = d.line(in1, v1)
q2 = d.line(v1, in2)
hi = d.line(v1, out1, style='wiggly', arrow=False, nwiggles=3)
q1.text('$b$', fontsize=20, t=0.1, y=0.02)
q2.text(r'$\bar{b}$', fontsize=20, t=0.9, y=-0.02)
hi.text(r'$Z$', fontsize=20)
d.plot()
plt.savefig('bbZ.pdf')
plt.show()
plt.clf()
return
def draw_gg_channels():
gluon_style = dict(style='linear loopy', xamp=.03, yamp=.03, nloops=4)
fig = plt.figure(figsize=(10., 10.))
ax = fig.add_axes([0, 0, 1, 1], frameon=False)
d = f.Diagram(ax)
# vertices
in1 = d.vertex(xy=(.1, .7), marker='')
in2 = d.vertex(xy=(.1, .3), marker='')
v1 = d.vertex(xy=(.3, .5))
v2 = d.vertex(xy=(.6, .5))
v3 = d.vertex(xy=(.7, find_xy(.7, (.6, .5), (.8, .7))))
out1 = d.vertex(xy=(.8, .7), marker='')
out2 = d.vertex(xy=(.8, .3), marker='')
out3 = d.vertex(xy=(.8, .5), marker='')
# lines
q1 = d.line(in1, v1, **gluon_style)
q2 = d.line(v1, in2, **gluon_style)
pr = d.line(v1, v2, **gluon_style)
hi = d.line(v3, out3, style='wiggly', arrow=False, nwiggles=3)
q3 = d.line(v2, v3, arrow=False)
q3 = d.line(v3, out1)
q4 = d.line(out2, v2)
q3.text(r'$b$', fontsize=20, t=0.7, y=0.03)
q4.text(r'$\bar{b}$', fontsize=20, t=0.3, y=-0.02)
hi.text(r'$Z$', fontsize=20)
d.plot()
plt.savefig('ggZbb_s.pdf')
plt.show()
plt.clf()
# t-channel
fig = plt.figure(figsize=(10., 10.))
ax = fig.add_axes([0, 0, 1, 1], frameon=False)
d = f.Diagram(ax)
in1 = d.vertex(xy=(.1, .7), marker='')
in2 = d.vertex(xy=(.1, .3), marker='')
v1 = d.vertex(xy=(.45, .7))
v2 = d.vertex(xy=(.45, .3))
v3 = d.vertex(xy=(.45, .5))
out1 = d.vertex(xy=(.8, .7), marker='')
out2 = d.vertex(xy=(.8, .3), marker='')
out3 = d.vertex(xy=(.8, .5), marker='')
# lines
q1 = d.line(in1, v1, **gluon_style)
q2 = d.line(v2, in2, **gluon_style)
pr = d.line(v2, v3)
pr = d.line(v3, v1)
# hi = d.line(out3,v3)
q3 = d.line(v1, out1)
q4 = d.line(out2, v2)
hi = d.line(v3, out3, style='wiggly', arrow=False, nwiggles=3)
q3.text(r'$b$', fontsize=20, t=0.9, y=-0.04)
q4.text(r'$\bar{b}$', fontsize=20, t=0.1, y=-0.01)
hi.text(r'$Z$', fontsize=20, t=0.9, y=0.05)
d.plot()
plt.savefig('ggZbb_t.pdf')
plt.show()
plt.clf()
return