Tagged EMC Measurements on Light Nuclei
Abstract
We propose to measure tagged deep inelastic scattering from light nuclei (deuterium and He) by detecting the low energy nuclear spectator recoil (p, H and He) in addition to the scattered electron. The proposed experiment will provide stringent tests leading to clear differentiation between the many models describing the EMC effect, by accessing the bound nucleon virtuality through its initial momentum at the point of interaction. Indeed, conventional nuclear physics explanations of the EMC effect mainly based on Fermi motion and binding effects yield very different predictions than more exotic scenarios, where bound nucleons basically loose their identity when embedded in the nuclear medium. By distinguishing events where the interacting nucleon was slow, as described by a mean field scenario, or fast, very likely belonging to a correlated pair, will clearly indicate which phenomenon is relevant to explain the EMC effect. An important challenge for such measurements using nuclear spectators is the control of the theoretical framework and, in particular, final state interactions. This experiment will directly provide the necessary data needed to test our understanding of spectator tagging and final state interactions in H and He and their impact on the semi-inclusive measurements of the EMC effect described above.
Keywords
Cite
@article{arxiv.1708.00891,
title = {Tagged EMC Measurements on Light Nuclei},
author = {Whitney Armstrong and John Arrington and Ian Cloet and Kawtar Hafidi and Mohammad Hattawy and David Potteveld and Paul Reimer and Seamus Riordan and Z. Yi and Jacques Ball and Maxime Defurne and Michel Garcon and Herve Moutarde and Sebastien Procureur and Franck Sabatie and Wim Cosyn and Malek Mazouz and Alberto Accardi and Julien Bettane and Gabriel Charles and Raphael Dupre and Michel Guidal and Dominique Marchand and Carlos Munoz and Silvia Niccolai and Eric Voutier and Krishna Adhikari and James Dunne and Dipangkar Dutta and Lamiaa El Fassi and Li Ye and Moskov Amarian and Gail Dodge and Vadim Guzey and Nathan Baltzell and Francois-Xavier Girod and Cynthia Keppel and Stepan Stepanyan and Burcu Duran and Sylvester Joosten and Zein-Eddine Meziani and Michael Paolone and Melanie Rehfuss and Nikos Sparveris and F. Cao and Kyungseon Joo and Andrei Kim and N. Markov and Claudio Ciofi degli Atti and Sergio Scopetta and William Brooks and Ahmed El-Alaoui and Simonetta Liuti},
journal= {arXiv preprint arXiv:1708.00891},
year = {2017}
}