Add lines lb -> n jpsi ks

Lb->JpsipK amplitude analysis has achieved huge success in pentaquark research fundamentally. But no one try Lb->KpsiNK before, we want to add this line and spruce it after success in neutron reconstruction (another MR !4585 (merged) in B2CC).

Bandwidth LL: 3.7 MB/s, LD: 2.4 MB/s DD: 1.6 MB/s

Update 23-March tight cut on track and IPchi2 for Jpsi and Ks LL: 2.7 MB/s LD: 2.1 MB/s DD: 0.5 MB/s

Hlt/Hlt2Conf/python/Hlt2Conf/lines/b_to_charmonia/b_to_jpsix.py

@@ -255,6 +255,23 @@ def make_Bd2JpsimumuKshortKshort_detached(
     )
 
 
+def make_LbToJpsiKs_Neutron_tight(
+    particles,
+    descriptor,
+    name="B2CC_LbToJpsiKshort_Neutron_Combiner_{hash}",
+    comb_m_min=6050 * MeV,
+    comb_m_max=6555 * MeV,
+):
+    combination_code = in_range(comb_m_min, F.MASS, comb_m_max)
+
+    return ParticleCombiner(
+        name=name,
+        Inputs=particles,
+        DecayDescriptor=descriptor,
+        CombinationCut=combination_code,
+    )
+
+
 ### Define function for each line
 def make_BsToJpsiPhi_detached_line(process):
     assert process in ["hlt2", "spruce"], (
@@ -655,6 +672,93 @@ def make_LbToJpsipH_line(
     return [jpsi, lambda0, Lb2jpsipH]
 
 
+def make_LbToJpsiKs_LL_Neutron_tight_line(
+    process,
+    comb_m_min_jpsi=2916 * MeV,
+    comb_m_max_jpsi=3276 * MeV,
+    comb_m_min=3550 * MeV,
+    comb_m_max=4750 * MeV,
+):
+    assert process in ["hlt2", "spruce"], (
+        "Line must be defined as Hlt2 or Sprucing line!"
+    )
+    muons = basic_builder.filter_muons_loose(
+        particles=make_long_muons(), mu_pidk=10, mu_pidp=10
+    )
+    jpsi = basic_builder.make_selected_jpsi_bd2jpsimumukshort(
+        muons=muons, max_vchi2pdof=4
+    )
+    kshort_LL = basic_builder.make_ks_LL(bpvvdchi2=4, chi2vx=4, pi_mipchi2pv=4)
+
+    Lb2jpsiKs = make_LbToJpsiKs_Neutron_tight(
+        name="B2CC_LbToJpsiKshort_neutron_Combiner_{hash}",
+        particles=[jpsi, kshort_LL],
+        descriptor="[Lambda_b0 -> J/psi(1S) KS0 ]cc",
+        comb_m_min=comb_m_min,
+        comb_m_max=comb_m_max,
+    )
+
+    return [jpsi, kshort_LL, Lb2jpsiKs]
+
+
+def make_LbToJpsiKs_DD_Neutron_tight_line(
+    process,
+    comb_m_min_jpsi=2916 * MeV,
+    comb_m_max_jpsi=3276 * MeV,
+    comb_m_min=3550 * MeV,
+    comb_m_max=4750 * MeV,
+):
+    assert process in ["hlt2", "spruce"], (
+        "Line must be defined as Hlt2 or Sprucing line!"
+    )
+    muons = basic_builder.filter_muons_loose(
+        particles=make_long_muons(), mu_pidk=10, mu_pidp=10
+    )
+    jpsi = basic_builder.make_selected_jpsi_bd2jpsimumukshort(
+        muons=muons, max_vchi2pdof=4
+    )
+    kshort_DD = basic_builder.make_ks_DD(bpvvdchi2=4, chi2vx=4)
+
+    Lb2jpsiKs = make_LbToJpsiKs_Neutron_tight(
+        name="B2CC_LbToJpsiKshort_neutron_Combiner_{hash}",
+        particles=[jpsi, kshort_DD],
+        descriptor="[Lambda_b0 -> J/psi(1S) KS0 ]cc",
+        comb_m_min=comb_m_min,
+        comb_m_max=comb_m_max,
+    )
+
+    return [jpsi, kshort_DD, Lb2jpsiKs]
+
+
+def make_LbToJpsiKs_LD_Neutron_tight_line(
+    process,
+    comb_m_min_jpsi=2916 * MeV,
+    comb_m_max_jpsi=3276 * MeV,
+    comb_m_min=3550 * MeV,
+    comb_m_max=4750 * MeV,
+):
+    assert process in ["hlt2", "spruce"], (
+        "Line must be defined as Hlt2 or Sprucing line!"
+    )
+    muons = basic_builder.filter_muons_loose(
+        particles=make_long_muons(), mu_pidk=10, mu_pidp=10
+    )
+    jpsi = basic_builder.make_selected_jpsi_bd2jpsimumukshort(
+        muons=muons, max_vchi2pdof=4
+    )
+    kshort_LD = basic_builder.make_ks_LD(bpvvdchi2=4, chi2vx=4, pi_mipchi2pv=4)
+
+    Lb2jpsiKs = make_LbToJpsiKs_Neutron_tight(
+        name="B2CC_LbToJpsiKshort_neutron_Combiner_{hash}",
+        particles=[jpsi, kshort_LD],
+        descriptor="[Lambda_b0 -> J/psi(1S) KS0 ]cc",
+        comb_m_min=comb_m_min,
+        comb_m_max=comb_m_max,
+    )
+
+    return [jpsi, kshort_LD, Lb2jpsiKs]
+
+
 def make_BdToJpsieeKshort_LL_detached_line(process):
     assert process in ["hlt2", "spruce"], (
         "Line must be defined as Hlt2 or Sprucing line!"