Pythia8-3 Particle

mayflowers posted @ 2010年7月14日 23:17 in HEP , 1225 阅读

Particlet 类

 mypythia.event 是每次产生事例的粒子集合。

mypythia.event[i].id();          // id

mypythia.event[i].name();   // name, string 类型

mypythia.event[i].tau();      // 寿命

mypythia.event[i].m();        // mass in GeV

mypythia.event[i].m0();      // nominal mass

mypythia.event[i].mt();       // 横质量

mypythia.event[i].mt2();     // 横质量平方

mypythia.event[i].e();          // energy

mypythia.event[i].px();        // 动量 px。还有 py, pz。

mypythia.event[i].pt();         // 横动量

mypythia.event[i].pt2();       // 横动量的平方

mypythia.event[i].pAbs();                 // 3-动量

mypythia.event[i].pAbs2();               // 3-动量平方

mypythia.event[i].theta();                  // 极角

mypythia.event[i].phi();                     // 方位角

mypythia.event[i].y();                         // 快度

mypythia.event[i].eta();                     // 赝快度

mypythia.event[i].spinType();          // 2s+1

mypythia.event[i].isCharged();       // 是否带电(布尔型)

mypythia.event[i].isNeutral();          // 是否中性(布尔型) 

mypythia.event[i].charge();              // 电荷

mypythia.event[i].chargeType();     // 电荷*3

mypythia.event[i].colType();             // 0: singlet; 1: triplet; -1: antitriplet; 2: octets.

 

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