Two pion production in protonnucleon and proton nuclear
- Slides: 19
Two pion production in proton-nucleon and proton nuclear collisions T. Skorodko, Physikalisches Institut, Univ. Tuebingen for WASA collaboration, Jalta 2006 • Motivation • Proton-proton data at Tp < 1 Ge. V • Proton-proton data at Tp > 1 Gev • Proton-deutron data • Conclusion and outlook
Available data from WASA pp → ppp+ppp → ppp 0 p 0 pp → pnp+p 0 pp → nnp+p+ pp → dp+p 0 pd → 3 Hep+ppn → dp 0 p 0 pd → 3 Hep 0 p 0
WASA 4 p detector
Experimental and theoretical situation
Proton-proton data at Tp < 1 Ge. V
Roper excitation p+p- p 0 p 0 Roper parameters optimized for p+p- I=0, 1 Roper parameters optimized for p 0 p 0 I=0 N* Dp N(pp)l=I=0 Ns s ~ |a + b k 1 k 2|2
Dynamic s formation
Dynamic s formation Total cross section PROMICE/WASA CELSIUS-WASA
Proton-proton data at Tp > 1 Ge. V
Tp > 1 Ge. V: pp→ppp+p- (DD)0+-3+
0 p 0 pp→pp p Tp > 1 Ge. V: 1000 Me. V 1100 Me. V 1200 Me. V
Measurement of p-p→p 0 p 0 n from threshold to pp=750 Me. V/c Crystal Ball Phys. Rev. C 69, 045202(2004)
pp → nnp+p+ Bose-Einstein Correlations ? nnp+p+ pp → (ppp 0 p 0) D+ (p 0) D+ p+ ü two identical bosons in final state ü D+D+ intermediate state p+ (p 0)
pp → nnp+p+ Tp =1100 Me. V p r e l i m i (DD)0+ n a r y no Bose-Einstein correlations
Proton-deutron data at Tp > 1 Ge. V
pd 3 He pp at Tp=893 Me. V M. Bashkanov et. al, Phys. Lett. B 637 (2006) 223 -228 Mpp p +p - p 0 p 0
ABC effect on 3 He and d ΔΔ FSI ΔΔ
Conclusions and Outlook pp → pppp Tp < 1 Ge. V: ▪ Roper excitation ▪ dynamic s formation * Tp ≥ 1 Ge. V: ▪ dominant ▪ p 0 p 0: unexpected enhancement in Mpp – not BEC, since no enhancement in p+p+ channel ! – connection to ABC effect? pd → 3 Hepp and pn → dp 0 p 0 – ? ? * ABC effect may be explained by DD FSI
- Proton proton chain
- Nuclear fission
- Proton proton chain
- Contoh pre production
- Pion decay
- Pion
- Louis pion montre
- Pion
- Pion geant
- Gdwf
- Pion lifetime
- Lesson 15 nuclear quest nuclear reactions
- Fisión nuclear vs fision nuclear
- Alpha beta gamma neutron
- Two types of nuclear reactions
- Neutron particle symbol
- Production with two variable inputs
- Marginal rate of technical substitution
- Production with two variable inputs
- Pass the proton acid base theories answer key