Converting TEvtGen to native cmake

[u/mrichter/AliRoot.git] / TEvtGen / EvtGen / EvtGenBase / EvtBlattWeisskopf.hh

diff --git a/TEvtGen/EvtGen/EvtGenBase/EvtBlattWeisskopf.hh b/TEvtGen/EvtGen/EvtGenBase/EvtBlattWeisskopf.hh
new file mode 100644 (file)
index 0000000..e3faaa9
--- /dev/null
+++ b/TEvtGen/EvtGen/EvtGenBase/EvtBlattWeisskopf.hh
@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * Project: BaBar detector at the SLAC PEP-II B-factory
+ * Package: EvtGenBase
+ *    File: $Id: EvtBlattWeisskopf.hh,v 1.2 2009-03-16 16:43:40 robbep Exp $
+ *  Author: Alexei Dvoretskii, dvoretsk@slac.stanford.edu, 2001-2002
+ *
+ * Copyright (C) 2002 Caltech
+ *******************************************************************************/
+
+// Blatt-Weisskopf penetration form factor for a resonance R->AB.
+// Taken from CLEO preprint 00-23 (hep-ex/0011065)
+
+#ifndef EVT_BLATT_WEISSKOPF_HH
+#define EVT_BLATT_WEISSKOPF_HH
+
+class EvtBlattWeisskopf {
+
+
+public:
+
+  EvtBlattWeisskopf(int LL, double R, double p0);
+  EvtBlattWeisskopf(const EvtBlattWeisskopf&);
+  ~EvtBlattWeisskopf();
+
+  double operator()(double p) const;
+
+private:
+
+  int    _LL;   // angular momentum of daughters
+  double _radial;    // resonance radial parameter
+  double _p0;
+
+  double _F0;   // formula evaluated at _p0
+  double compute(double p) const;
+
+};
+
+#endif
+
+