1 / 7

Proton Spin in the EIC Era EIC Panel Discussion

Proton Spin in the EIC Era EIC Panel Discussion. Feng Yuan* Lawrence Berkeley National Laboratory. Electron Ion Collider Users Meeting Stony Brook University, June 24-27 2014. *discussions with Ernst Sichtermann.

chava
Télécharger la présentation

Proton Spin in the EIC Era EIC Panel Discussion

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. Proton Spin in the EIC EraEIC Panel Discussion Feng Yuan* Lawrence Berkeley National Laboratory Electron Ion Collider Users Meeting Stony Brook University, June 24-27 2014 *discussions with Ernst Sichtermann

  2. Precision constraints on the partonhelicity contributions in the nucleon spin: NNPDF, arXiv:1406.5539 (June 20th): = With positive contributions from RHIC measured range: = based on additional (2009) data. See also DSSV, arXiv:1404.4293. gluon spin quark spin × 2

  3. Parton Orbital Motion from nucleon tomography: -0.5 0.5 0.0 • Spin measurements at EIC will extend not only the range in x and Q2, but will also enable 2+1D imaging of quarks and gluons. 0.5 ky 0.0 -0.5 kx

  4. Fundamental Understandingofthe Nucleon Spinand the Role of Spin in QCD EIC Measurements Lattice QCD Detmold’s talk recent developments: Ji, 2013,Lin, et al, 2014 Ma, Qiu, 2014, Ji-Sun-Xiong-Yuan, 2014 (TMDs) Theory/Phenomenology

  5. Back-up

  6. Wide Q2 Range Crucial for TMDs Leading power TMD Non-singular term in CSS (power corrections)

  7. TMD factorization in quasi-pdfs • For example, for Drell-Yan lepton pair production Soft factor Lattice calculation Quasi-pdfs

More Related