1 / 58

From Nucleons to Quarks

Hadrons in the Nuclear Medium. From Nucleons to Quarks. Misak Sargsian Florida International University, Miami. CLAS 12 2 nd European Workshop 7-11, March 2010, Paris. High Energy Electro- Nuclear Processes . Hard – Nuclear Processes. Hadrons in the

soyala
Télécharger la présentation

From Nucleons to Quarks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hadrons in the Nuclear Medium From Nucleons to Quarks Misak Sargsian Florida International University, Miami CLAS 12 2nd European Workshop 7-11, March 2010, Paris

  2. High Energy Electro- Nuclear Processes Hard – Nuclear Processes Hadrons in the Nuclear Medium Nuclear Structure At Short Distances III. SIDIS on Deuteron with Recoil Nucleons II. Measuring the deuteron wave function I. QCD dynamics of Hadron-Hadron Interaction IV. Protons in the Superdense Nuclear Matter

  3. Mode of the Research - Understanding and Learning From the Existing Data - Narrowing the Program of the 12 GeV Studies (*) In Collaboration with WimCosyn, Carlos Granados, Mike McGauley

  4. Hard-Nuclear Processes Mx

  5. Hard-Hadron Processes

  6. Brodsky, Farrar 1975 Matveev, Muradyan, Takhvelidze, 1975

  7. Brodsky, Chertock, 1976 Gilman, Gross, 2002

  8. Hard-Rescattering Model Frankfurt, Miller, MS, Strikman PRL 2000

  9. Mirazita, et al, Phys. Rev. C 2004

  10. Break up of thpnfrom the deuteron Break up of the ppfrom Helium 3 Brodsky, Frankfurt, Gilman, Hiller, Miller, MS. StrikmanC.GranadosPLB 2006

  11. M. S. C.Granados PRC 2009

  12. What is interesting in this result?

  13. Transition from 3-step to 2-step processes

  14. (II) The Shape of the S distribution of NN Scattering Pomerantz et al PLB09

  15. Where we would like go from here ? 1. Generalization of break – up reactions to the deuteron break-up of other 2Baryons 2. Extraction of hard Baryonic HelicityAmplitudes from Polarized measurement 3. Extension of break up reaction to virtaul photon scattering and extracting impact parameter distribution of hard scattering amplitude P.Hoyer, S. Kurki, ArXiV 2011

  16. 1. Generalization of break – up reactions to the deuteron break-up of other 2Baryons M. S. C.Granados ArXiv 2010

  17. 2. Extraction of the hard NN helicity amplitudes for scattering from polarized measurements

  18. II. Measuring Deuteron Momentum Distribution at Large Internal Momenta Blomqvistet al1998 Ulmer et al 2002 Q2 = 0.667GeV2 Q2 = 0.33 GeV2

  19. We study DeuteronElectrodisintegration M.S. PRC 2010 knock-out GEA L.Frankfurt, M.Strikman PRC 1997, M.S. IJMP01

  20. GEA GA K.Egiyan, et al PRL07 L.Frankfurt, M.S. M.Strikman PRC 1997

  21. M.S. PRC 2010

  22. Boeglin, Jones, Voutier, E01-020 Preliminary for PAC

  23. Where we would like go from here ? 1. Extend the measurement to missing momenta into a GeV/c region 2. Cover full angular range of recoil nucleon momentum

  24. (III) Semi-Inclusive DIS Scattering off the Deuteron with Recoil Nucleon W.Cosyn, M.S. nucl-th- 2010,11 GEA approximation

  25. Egiyan et al PRL07 Klimenko et al PRC06

  26. Where we would like go from here ? 1. To have measurement in the extended region of Q2 and w. 2. Q2 and w dependence of will allow to map out the hadronization process of the DIS products 3. To search for the Color Trnasparency effect in the baryonic sector

  27. IV. Protons in the Superdense Nuclear matter - What we learned/confirmed from SRC Studies during last 7-8 years First: nuclear momentum distributionsin the high momentum tail is similar to that of short range NN system/deuteron

  28. Egiyan, et al PRC 2004

  29. Egiyan, et al PRL 2006

  30. Meaning of the scaling values In the situation when scaling is established introduce where Probability of finding 2N or 3N SRCs relative to deuteron and helium 3 Fraction of High momentum component of nuclear wave function due to 2N SRC 3N SRC

  31. Second: Isospin 1 states Isospin 0 states

  32. BNL data on A(p,2pn)X Piasetzky, MS, Frankfurt, Strikman, Watson PRL 2007 • 92% of the time two-nucleon high density fluctuations are proton and neutron • at most 4% of the time proton-proton or neutron-neutron JLAB data A(e,e’pn)X R. Shneor et al. PRL 07

  33. Combined Analysis R.Subdei, et al Science , 2008 pn pp nn

  34. Consequence of the suppression of nn and pp SRCs

  35. (1) (2) For we analyze data for symmetric nuclei and for other A’s use the relation where (3) Neglecting contributions due to ppand nnSRCs one obtains boundary conditions M. McGauley, MS Feb. 2011 arxiv 1102.3973

  36. World Data on Inclusive A(e,e’)X and d(e,e’)X Data for we found data for

  37. Remaining where using and

More Related