Testing & improvement of inelastic p A, KA & anti-pA cross-sections
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Testing & improvement of inelastic A, KA & anti- pA cross-sections Mikhail Kosov , 14 th Geant4 Users and Collaboration Workshop, 2009
description
Mikhail Kosov , 14 th Geant4 Users and Collaboration Workshop, 2009. Testing & improvement of inelastic p A, KA & anti-pA cross-sections. Introduction. The inelastic cross-sections are improved for the new one-model CHIPS physics list - PowerPoint PPT Presentation
Transcript of Testing & improvement of inelastic p A, KA & anti-pA cross-sections
Testing & improvement of inelastic A, KA & anti-pA cross-sections
Mikhail Kosov, 14th Geant4 Users and Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 214th Users & Collaboration Workshop, 2009
Introduction The inelastic cross-sections are improved for
the new one-model CHIPS physics list The pA and nA cross-sections are already improved 2 years ago CHIPS A cross-sections are competitive with Barashenkov XS The existing GEISHA K+A cross-sections are bad for CHIPS CHIPS improvement of anti-pA cross-sections is significant
The main points of the improvement Coulomb barrier for positive hadrons (p, +, K+) Melting of resonances at intermediate energies Evolution of the cross-section minimum because of PPP vertex Glauber calculation using CHIPS hA cross-sections (dashed) Total to Inelastic Glauber reduction (in/tot coefficient)
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 314th Users & Collaboration Workshop, 2009
CHIPS parameterization of in (A, K-A)
3
14
2
22 /.1
/)(ln
)(lni ii
iD pH
pGFEpD
CBp
V
4
2
22 /)(1
)()2.4(ln
)())((ln
)(
pAH
AFp
ACABp
AVA
4
2
222 /)(1
)()2.4(ln
]/)(1][)())([(ln
)(
pAH
AFp
pADACABp
AVA
Parameterization of -A and +A inelastic cross-sections:
Parameterization of -A inelastic cross-sections:
2
14
2
22 //.1
)(ln
)(i ii
iDK pHpG
FEpD
CBp
V
pp
W
4
2
22 /)(/)(1
)()2.4(ln
)(.)1(
)()(
pAHpAG
AFp
ACp
AV
pp
AWAK
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 414th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 514th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 614th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 714th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 814th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 914th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1014th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1114th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1214th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1314th Users & Collaboration Workshop, 2009
Preliminary CHIPS fit for in (A,anti-pA)
4
2
22 //1
)(ln
)( pHpG
FEpD
CBp
VDK
Parameterization of +A inelastic cross-section:
Parameterization of anti-pA inelastic cross-section:
FEpDpHpGpDanti
23/13/2 )(ln
4
2
8
122
122 /)(/)(1
)()2.4(ln)1/()
)())((
)((
pAHpAG
AFp
A
p
ACABp
AV
iAK
pAFpADpAanti /)()2.4(ln)( 2
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1414th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1514th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1614th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1714th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1814th Users & Collaboration Workshop, 2009
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 1914th Users & Collaboration Workshop, 2009
Conclusion Now the updated CHIPS inelastic cross-section
update is almost ready for the CHIPS Phys. List The only scope to be covered is Hyperon-nuclear
reactions for which there is no data: do similar to NA inelastic cross-sections with CHIPS Glauber
A lot should be done for elastic cross-sections fit, but now the strategy is different (w.r.t.``` NA): use el(“ex”)=tot(ex)-in(CHIPS)
In November 2009 the first one-model CHIPS physics list can be implemented for testing; the inelastic cross-sections is the first thing to test
Other G4 models can use CHIPS cross-sections
M. Kosov, CHIPS improvement of A & KA inelastic cross-sections 2014th Users & Collaboration Workshop, 2009
Thank you
Backup slides following
