Accès ouvert déclaré
2021
preprint
Measurement of the Nucleon $F^n_2/F^p_2$ Structure Function Ratio by the Jefferson Lab MARATHON Tritium/Helium-3 Deep Inelastic Scattering Experiment
MARATHON Collaboration, D. Abrams, H. Albataineh, B. Aljawrneh, S. Alsalmi, K. Aniol, W. Armstrong, J. Arrington, H. Ataç, T. Averett, C. Ayerbe Gayoso, X. Bai, J. Bane, S. Barcus, A. Beck, Vincenzo Bellini, H. Bhatt, D. Bhetuwal, D. Biswas, D. Blyth, W. B. Li, D. Bulumulla, J. Butler, A. Camsonne, M. Carmignotto, J. Castillo Castellanos, J.-P. Chen, E.Ø. Cohen, S. Covrig, K. Craycraft, R. Cruz-Torres, B. Dongwi, B. Duran, D. Dutta, E. Fuchey, C. Gal, T. N. Gautam, S. Gilad, K. Gnanvo, T. Gogami, J. Gómez, C. Gu, A. Habarakada, T. J. Hague, O. Hansen, M. Hattawy, F. Hauenstein, D. W. Higinbotham, R. J. Holt, E. W. Hughes, C. E. Hyde-Wright, H. Ibrahim, Siyu Jian, S. Joosten, A. Karki, B. Karki, A. T. Katramatou, C. Keith, C. Keppel, M. Khachatryan, V. Khachatryan, A. Khanal, A. Kievsky, David E. King, P. M. King, I. Korover, S. A. Kulagin, K.S. Kumar, T. Kutz, N. Lashley-Colthirst, Shirley Weishi Li, W. Li, Haibo Liu, S. Liuti, N. Liyanage, P. Markowitz, R. E. McClellan, D. Meekins, S. Mey-Tal Beck, Z. -E. Meziani, R. Michaels, M. Mihovilovič, V. Nelyubin, D. Nguyen, Nuruzzaman Nuruzzaman, M. Nycz, R. Obrecht, M. Olson, V. Owen, E. Pace, B. Pandey, V. Pandey, M. Paolone, A. Papadopoulou, S. Park, Sebouh J. Paul, G. G. Petratos, R. Petti, E. Piasetzky, R. Pomatsalyuk, S. Premathilake, A. J. R. Puckett, V. Punjabi, R. D. Ransome, M. N. H. Rashad, P. E. Reimer, S. Riordan, J. Roche, G. Salmè, N. Santiesteban, B. Sawatzky, Sergio Scopetta, A. Schmidt, B. Schmookler, J. Segal, E. P. Segarra, A. Shahinyan, S. Sirca, N Sparveris, T. Su, R. Suleiman, H. Szumila-Vance, Anjaneyulu S. Tadepalli, L. Tang, W. Tireman, F. Tortorici, G. M. Urciuoli, B. Wojtsekhowski, S. A. Wood, Z. Ye, Z. Y. Ye, Jinlong Zhang
9Citations signalées, ce qui n’est pas une note de qualité
47Institutions déclarées
12Pays d’affiliation déclarés
Rattachement africain : us, sa, it, Ghana, il, jp, Égypte, ru, ca, si, de, am.
Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The ratio of the nucleon $F_2$ structure functions, $F_2^n/F_2^p$, is determined by the MARATHON experiment from measurements of deep inelastic scattering of electrons from $^3$H and $^3$He nuclei. The experiment was performed in the Hall A Facility of Jefferson Lab and used two high resolution spectrometers for electron detection, and a cryogenic target system which included a low-activity tritium cell. The data analysis used a novel technique exploiting the mirror symmetry of the two nuclei, which essentially eliminates many theoretical uncertainties in the extraction of the ratio. The results, which cover the Bjorken scaling variable range $0.19 < x < 0.83$, represent a significant improvement compared to previous SLAC and Jefferson Lab measurements for the ratio. They are compared to recent theoretical calculations and empirical determinations of the $F_2^n/F_2^p$ ratio.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Particle physics theoretical and experimental studiesNuclear physics research studiesParticle Accelerators and Free-Electron Lasers