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G4INCL::NKbToLpiChannel Class Reference
#include <G4INCLNKbToLpiChannel.hh>
Inheritance diagram for G4INCL::NKbToLpiChannel:
Public Member Functions | |
| NKbToLpiChannel (Particle *, Particle *) | |
| virtual | ~NKbToLpiChannel () |
| void | fillFinalState (FinalState *fs) |
| ThreeVector | KaonMomentum (Particle const *const kaon, Particle const *const nucleon) |
| Public Member Functions inherited from G4INCL::IChannel | |
| IChannel () | |
| virtual | ~IChannel () |
| FinalState * | getFinalState () |
| virtual void | fillFinalState (FinalState *fs)=0 |
Detailed Description
Definition at line 47 of file G4INCLNKbToLpiChannel.hh.
Constructor & Destructor Documentation
◆ NKbToLpiChannel()
Definition at line 49 of file G4INCLNKbToLpiChannel.cc.
50 : particle1(p1), particle2(p2)
51 {}
◆ ~NKbToLpiChannel()
|
virtual |
Definition at line 53 of file G4INCLNKbToLpiChannel.cc.
53{}
Member Function Documentation
◆ fillFinalState()
|
virtual |
Implements G4INCL::IChannel.
Definition at line 55 of file G4INCLNKbToLpiChannel.cc.
55 {
56
57 Particle *nucleon;
58 Particle *kaon;
59
61 nucleon = particle1;
62 kaon = particle2;
63 }
64 else{
65 nucleon = particle2;
66 kaon = particle1;
67 }
68 const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(kaon->getType());
69
70
72
73 kaon->setType(ParticleTable::getPionType(iso));
75
77
78 kaon->setMomentum(mom_pion*norm);
79 nucleon->setMomentum(-mom_pion*norm);
80
81 kaon->adjustEnergyFromMomentum();
82 nucleon->adjustEnergyFromMomentum();
83
84 fs->addModifiedParticle(nucleon);
85 fs->addModifiedParticle(kaon);
86
87 }
ThreeVector KaonMomentum(Particle const *const kaon, Particle const *const nucleon)
Definition: G4INCLNKbToLpiChannel.cc:89
G4double momentumInCM(Particle const *const p1, Particle const *const p2)
gives the momentum in the CM frame of two particles.
Definition: G4INCLKinematicsUtils.cc:107
G4int getIsospin(const ParticleType t)
Get the isospin of a particle.
Definition: G4INCLParticleTable.cc:478
ParticleType getPionType(const G4int isosp)
Get the type of pion.
Definition: G4INCLParticleTable.cc:1225
◆ KaonMomentum()
| ThreeVector G4INCL::NKbToLpiChannel::KaonMomentum | ( | Particle const *const | kaon, |
| Particle const *const | nucleon | ||
| ) |
Definition at line 89 of file G4INCLNKbToLpiChannel.cc.
89 {
90
92
94
95 G4double cos_theta = 1.;
96 G4double sin_theta = 0.;
99
103
106
107 if(pLab >= 1845.){
108 const G4double b = 12. * pLab/2375.; // correspond to the forward slope description at 2375 MeV/c in K- p elastic
109 cos_theta = std::log(Random::shoot()*(std::exp(b)-std::exp(-b))+std::exp(-b))/b;
110 sin_theta = std::sqrt(1-cos_theta*cos_theta);
111
112 }
113 else{
115 {435,1.29381,0.87668,0.24531,0.00844,-0.0067,4e-05,0},
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128 {500,1.17802,0.85684,0.20455,-0.03423,0.00369,-6e-05,0},
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172 {720,0.30161,1.28419,0.33773,0.16421,0.01265,0.00332,2e-05},
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274 {1230,0.95077,0.58599,-0.66992,-0.52614,-0.10444,0.02468,-0.19694},
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280 {1260,0.93113,0.59315,-0.76463,-0.51207,-0.15797,0.14096,-0.22206},
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283 {1275,0.90848,0.5914,-0.80445,-0.5066,-0.19545,0.19131,-0.23018},
284 {1280,0.89933,0.59026,-0.81539,-0.50438,-0.20919,0.20634,-0.2318},
285 {1285,0.88952,0.58902,-0.82477,-0.50151,-0.22331,0.22066,-0.23293},
286 {1290,0.87914,0.58776,-0.83234,-0.49778,-0.23768,0.23437,-0.23361},
287 {1295,0.86827,0.58655,-0.83797,-0.49307,-0.25217,0.24756,-0.23388},
288 {1300,0.85696,0.58546,-0.84148,-0.48733,-0.26668,0.26028,-0.23375},
289 {1305,0.8453,0.58454,-0.84274,-0.4805,-0.2811,0.27262,-0.23327},
290 {1310,0.83334,0.58385,-0.84159,-0.47251,-0.29532,0.28466,-0.23245},
291 {1315,0.82116,0.58345,-0.8379,-0.46331,-0.30922,0.29645,-0.23134},
292 {1320,0.80881,0.58341,-0.8315,-0.45284,-0.32269,0.30807,-0.22995},
293 {1325,0.79636,0.58376,-0.82231,-0.44106,-0.33567,0.31957,-0.22833},
294 {1330,0.78383,0.58452,-0.81043,-0.42806,-0.34819,0.33087,-0.22653},
295 {1335,0.77121,0.58565,-0.79603,-0.41395,-0.36036,0.34185,-0.22459},
296 {1340,0.75852,0.58715,-0.77928,-0.39886,-0.37227,0.3524,-0.22258},
297 {1345,0.74577,0.589,-0.76033,-0.38289,-0.38399,0.36242,-0.22055},
298 {1350,0.73295,0.59118,-0.73935,-0.36617,-0.39563,0.37178,-0.21857},
299 {1355,0.72008,0.59368,-0.71651,-0.3488,-0.40726,0.38039,-0.21667},
300 {1360,0.70715,0.59646,-0.69194,-0.3309,-0.41893,0.38818,-0.2149},
301 {1365,0.6941,0.59943,-0.66566,-0.31253,-0.43043,0.39531,-0.21314},
302 {1370,0.68084,0.60248,-0.63764,-0.29373,-0.44151,0.40198,-0.21126},
303 {1375,0.66737,0.60553,-0.60795,-0.27456,-0.45201,0.40833,-0.20918},
304 {1380,0.65371,0.60856,-0.57672,-0.25501,-0.46189,0.41438,-0.2069},
305 {1385,0.63991,0.61158,-0.5441,-0.2351,-0.47112,0.42015,-0.20442},
306 {1390,0.62603,0.61456,-0.51023,-0.21484,-0.47966,0.42567,-0.20173},
307 {1395,0.6121,0.6175,-0.47525,-0.19424,-0.48749,0.43095,-0.19884},
308 {1400,0.59816,0.62039,-0.43932,-0.17332,-0.49457,0.43601,-0.19575},
309 {1405,0.58428,0.62321,-0.40257,-0.15208,-0.50088,0.44087,-0.19246},
310 {1410,0.57048,0.62596,-0.36515,-0.13053,-0.50637,0.44556,-0.18897},
311 {1415,0.55682,0.62862,-0.32721,-0.1087,-0.51102,0.4501,-0.18528},
312 {1420,0.54335,0.63118,-0.28889,-0.08658,-0.5148,0.4545,-0.18139},
313 {1425,0.5301,0.63363,-0.25033,-0.06419,-0.51767,0.45878,-0.1773},
314 {1430,0.51712,0.63597,-0.21167,-0.04154,-0.5196,0.46298,-0.173},
315 {1435,0.50446,0.63817,-0.17307,-0.01864,-0.52057,0.4671,-0.16851},
316 {1440,0.49217,0.64024,-0.13467,0.0045,-0.52053,0.47116,-0.16382},
317 {1445,0.48028,0.64215,-0.09661,0.02786,-0.51946,0.4752,-0.15892},
318 {1450,0.46885,0.64391,-0.05904,0.05144,-0.51733,0.47922,-0.15383},
319 {1455,0.45792,0.64548,-0.02209,0.07522,-0.51411,0.48325,-0.14854},
320 {1460,0.44754,0.64688,0.01408,0.09919,-0.50975,0.48732,-0.14305},
321 {1465,0.43774,0.64808,0.04933,0.12335,-0.50424,0.49143,-0.13736},
322 {1470,0.42855,0.64906,0.08361,0.14764,-0.49758,0.49559,-0.13154},
323 {1475,0.41997,0.6498,0.11691,0.17201,-0.4898,0.49979,-0.12566},
324 {1480,0.41199,0.65025,0.14924,0.19638,-0.48094,0.50402,-0.11983},
325 {1485,0.4046,0.65039,0.1806,0.2207,-0.47103,0.50827,-0.11413},
326 {1490,0.39781,0.65018,0.211,0.2449,-0.4601,0.51253,-0.10866},
327 {1495,0.39161,0.6496,0.24043,0.26892,-0.44819,0.51679,-0.10352},
328 {1500,0.38599,0.64862,0.26889,0.29269,-0.43534,0.52104,-0.09879},
329 {1505,0.38096,0.64719,0.2964,0.31615,-0.42158,0.52526,-0.09457},
330 {1510,0.37651,0.6453,0.32295,0.33923,-0.40693,0.52944,-0.09095},
331 {1515,0.37264,0.6429,0.34854,0.36186,-0.39144,0.53359,-0.08803},
332 {1520,0.36933,0.63998,0.37315,0.38401,-0.37512,0.53773,-0.08583},
333 {1525,0.36653,0.63654,0.39667,0.40564,-0.35794,0.54203,-0.08422},
334 {1530,0.3642,0.63257,0.41901,0.42676,-0.33984,0.54668,-0.08304},
335 {1535,0.36228,0.62809,0.44005,0.44733,-0.3208,0.55185,-0.08216},
336 {1540,0.36072,0.62309,0.45968,0.46736,-0.30076,0.55773,-0.08141},
337 {1545,0.35948,0.61757,0.47781,0.48683,-0.27969,0.5645,-0.08065},
338 {1550,0.35851,0.61154,0.49434,0.50572,-0.25756,0.57231,-0.07974},
339 {1555,0.35781,0.60502,0.50929,0.52405,-0.23439,0.58116,-0.07861},
340 {1560,0.35738,0.59804,0.52273,0.54186,-0.21023,0.59098,-0.07724},
341 {1565,0.35725,0.59063,0.53473,0.55915,-0.18514,0.60169,-0.07558},
342 {1570,0.35742,0.58282,0.54538,0.57597,-0.15918,0.61322,-0.07362},
343 {1575,0.35792,0.57463,0.55473,0.59234,-0.13239,0.62549,-0.07132},
344 {1580,0.35874,0.5661,0.56287,0.60828,-0.10484,0.63843,-0.06864},
345 {1585,0.35991,0.55725,0.56986,0.62383,-0.07657,0.65196,-0.06557},
346 {1590,0.36144,0.54811,0.57578,0.63899,-0.04764,0.66601,-0.06206},
347 {1595,0.36335,0.53871,0.5807,0.65382,-0.0181,0.6805,-0.05809},
348 {1600,0.36564,0.52909,0.5847,0.66832,0.01199,0.69536,-0.05363},
349 {1605,0.36833,0.51926,0.58783,0.68253,0.04258,0.7105,-0.04864},
350 {1610,0.37143,0.50926,0.59019,0.69647,0.07361,0.72586,-0.0431},
351 {1615,0.37496,0.49911,0.59183,0.71017,0.10503,0.74137,-0.03697},
352 {1620,0.37894,0.48885,0.59284,0.72365,0.13679,0.75693,-0.03023},
353 {1625,0.38336,0.47851,0.59329,0.73695,0.16883,0.77249,-0.02284},
354 {1630,0.38826,0.46811,0.59324,0.75008,0.2011,0.78797,-0.01477},
355 {1635,0.39363,0.45767,0.59277,0.76308,0.23354,0.80328,-0.00599},
356 {1640,0.39951,0.44724,0.59195,0.77597,0.26611,0.81836,0.00352},
357 {1645,0.40588,0.43684,0.59086,0.78878,0.29874,0.83312,0.01381},
358 {1650,0.41278,0.4265,0.58956,0.80153,0.33138,0.84751,0.0249},
359 {1655,0.42022,0.41624,0.58813,0.81425,0.36397,0.86143,0.03681},
360 {1660,0.4282,0.40614,0.58665,0.82695,0.39646,0.87483,0.04954},
361 {1665,0.43672,0.39632,0.58517,0.83966,0.42876,0.88768,0.06298},
362 {1670,0.44579,0.38689,0.58378,0.85238,0.46079,0.89994,0.07703},
363 {1675,0.45542,0.37799,0.58253,0.86511,0.49245,0.91158,0.09161},
364 {1680,0.46559,0.36972,0.5815,0.87787,0.52367,0.92256,0.1066},
365 {1685,0.47631,0.36223,0.58075,0.89067,0.55437,0.93285,0.12193},
366 {1690,0.48759,0.35562,0.58036,0.90351,0.58446,0.94242,0.13748},
367 {1695,0.49943,0.35002,0.58039,0.91642,0.61386,0.95122,0.15316},
368 {1700,0.51182,0.34555,0.58092,0.92938,0.64248,0.95923,0.16887},
369 {1705,0.52478,0.34234,0.58201,0.94243,0.67025,0.96642,0.18453},
370 {1710,0.5383,0.34049,0.58374,0.95556,0.69713,0.97277,0.20007},
371 {1715,0.55239,0.34002,0.58616,0.96883,0.72336,0.97841,0.21569},
372 {1720,0.56707,0.34092,0.58936,0.98229,0.74924,0.98349,0.23159},
373 {1725,0.58235,0.34319,0.59342,0.99599,0.77504,0.98814,0.24802},
374 {1730,0.59825,0.34683,0.59839,1.00998,0.80106,0.99252,0.26518},
375 {1735,0.61478,0.35185,0.60435,1.02432,0.82759,0.99678,0.28332},
376 {1740,0.63195,0.35823,0.61138,1.03905,0.85493,1.00106,0.30266},
377 {1745,0.64977,0.36598,0.61954,1.05422,0.88333,1.00549,0.32339},
378 {1750,0.66822,0.37504,0.6288,1.06985,0.91282,1.01013,0.34556},
379 {1755,0.68725,0.38533,0.6391,1.08592,0.94333,1.01496,0.36913},
380 {1760,0.70685,0.39679,0.65037,1.10245,0.9748,1.01998,0.39406},
381 {1765,0.72695,0.40934,0.66257,1.11943,1.00714,1.02519,0.42031},
382 {1770,0.74754,0.42291,0.67563,1.13684,1.0403,1.03058,0.44784},
383 {1775,0.76857,0.43743,0.68947,1.15471,1.07419,1.03615,0.47661},
384 {1780,0.79,0.45282,0.70406,1.17301,1.10875,1.04191,0.50658},
385 {1785,0.81179,0.46902,0.71931,1.19174,1.14391,1.04784,0.53771},
386 {1790,0.83392,0.48594,0.73518,1.21092,1.17959,1.05394,0.56997},
387 {1795,0.85634,0.50352,0.75159,1.23052,1.21573,1.06022,0.60332},
388 {1800,0.87901,0.52169,0.76849,1.25055,1.25225,1.06666,0.63771},
389 {1805,0.9019,0.54038,0.78582,1.27101,1.28908,1.07326,0.6731},
390 {1810,0.92496,0.5595,0.80351,1.2919,1.32615,1.08003,0.70946},
391 {1815,0.94817,0.57899,0.82151,1.31321,1.36339,1.08695,0.74675},
392 {1820,0.97149,0.59878,0.83975,1.33493,1.40073,1.09403,0.78493},
393 {1825,0.99487,0.61879,0.85816,1.35707,1.4381,1.10125,0.82396},
394 {1830,1.01828,0.63895,0.8767,1.37963,1.47543,1.10863,0.86381},
395 {1835,1.04168,0.65919,0.89529,1.4026,1.51264,1.11616,0.90442},
396 {1840,1.06504,0.67943,0.91388,1.42598,1.54966,1.12382,0.94576},
397 {1845,1.08832,0.69962,0.93241,1.44973,1.58645,1.13162,0.98775}};
398
401
402// assert(pLab >= Legendre_coef[coef_ener][0] && pLab < Legendre_coef[coef_ener+1][0]);
403
404 // Legendre coefficient normalized
406 const G4double A1 = (1-sup_ener)*Legendre_coef[coef_ener][1] + sup_ener*Legendre_coef[coef_ener+1][1];
407 const G4double A2 = (1-sup_ener)*Legendre_coef[coef_ener][2] + sup_ener*Legendre_coef[coef_ener+1][2];
408 const G4double A3 = (1-sup_ener)*Legendre_coef[coef_ener][3] + sup_ener*Legendre_coef[coef_ener+1][3];
409 const G4double A4 = (1-sup_ener)*Legendre_coef[coef_ener][4] + sup_ener*Legendre_coef[coef_ener+1][4];
410 const G4double A5 = (1-sup_ener)*Legendre_coef[coef_ener][5] + sup_ener*Legendre_coef[coef_ener+1][5];
411 const G4double A6 = (1-sup_ener)*Legendre_coef[coef_ener][6] + sup_ener*Legendre_coef[coef_ener+1][6];
412 const G4double A7 = (1-sup_ener)*Legendre_coef[coef_ener][7] + sup_ener*Legendre_coef[coef_ener+1][7];
413
414 // Theoritical max if all Ai > 0 (often the case)
415 const G4double A = std::fabs(A0) + std::fabs(A1) + std::fabs(A2) + std::fabs(A3) + std::fabs(A4) + std::fabs(A5) + std::fabs(A6) + std::fabs(A7);
416
418 G4int maxloop = 0;
419
420 while(!success && maxloop < 1000){
421
423
424 // Legendre Polynomial
425 G4double P0 = A0;
426 G4double P1 = A1*cos_theta;
427 G4double P2 = A2/2.*(3*std::pow(cos_theta,2)-1);
428 G4double P3 = A3/2.*(5*std::pow(cos_theta,3)-3*cos_theta);
429 G4double P4 = A4/8.*(35*std::pow(cos_theta,4)-30*std::pow(cos_theta,2)+3);
430 G4double P5 = A5/8.*(63*std::pow(cos_theta,5)-70*std::pow(cos_theta,3)+15*cos_theta);
431 G4double P6 = A6/16.*(231*std::pow(cos_theta,6)-315*std::pow(cos_theta,4)+105*std::pow(cos_theta,2)-5);
432 G4double P7 = A7/16.*(429*std::pow(cos_theta,7)-693*std::pow(cos_theta,5)+315*std::pow(cos_theta,3)-35*cos_theta);
433
435
437 maxloop +=1 ;
438 if(maxloop==1000) cos_theta = std::log(Random::shoot()*(std::exp(10.)-std::exp(-10.))+std::exp(-10.))/10.; // if no success in 1E4 shoot, probably angulard distribution piked very forward
439 }
440 sin_theta = std::sqrt(1-cos_theta*cos_theta);
441 }
442
443 if(rho == 0) return ThreeVector(sin_theta*cos_phi,sin_theta*sin_phi,cos_theta);
444 // Rotation in the direction of the incident kaon
448
449 return ThreeVector(px,py,pz);
450 }
G4double momentumInLab(Particle const *const p1, Particle const *const p2)
gives the momentum in the lab frame of two particles.
Definition: G4INCLKinematicsUtils.cc:135
Referenced by fillFinalState().
The documentation for this class was generated from the following files:
