First Measurement of Λ Electroproduction off Nuclei in the Current and Target Fragmentation Regions

Chetry, T.; El Fassi, L.; Brooks, W. K.; Dupre, R.; El Alaoui, A.; Hafidi, K.; Achenbach, P.; Adhikari, K. P.; Akbar, Z.; Armstrong, W. R.; Arratia, M.; Atac, H.; Avakian, H.; Baashen, L.; Baltzell, N. A.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Bedlinskiy, I.; Benkel, B.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bondi, M.; Booth, W. A.; Bossu, F.; Boiarinov, S.; Brinkmann, K. -Th.; Briscoe, W. J.; Bulumulla, D.; Burkert, V. D.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Chatagnon, P.; Chesnokov, V.; Ciullo, G.; Cole, P. L.; Contalbrigo, M.; Costantini, G.; D'Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Deur, A.; Diehl, S.; Djalali, C.; Egiyan, H.; Elouadrhiri, L.; Eugenio, P.; Fegan, S.; Filippi, A.; Gavalian, G.; Ghandilyan, Y.; Gilfoyle, G. P.; Glazier, D. I.; Golubenko, A. A.; Gosta, G.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Guo, L.; Hakobyan, H.; Hattawy, M.; Hayward, T. B.; Heddle, D.; Hobart, A.; Holtrop, M.; Ilieva, Y.; Ireland, D. G.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Kabir, M. L.; Khanal, A.; Khandaker, M.; Kim, A.; Kim, W.; Klein, F. J.; Kripko, A.; Kubarovsky, V.; Lagerquist, V.; Lanza, L.; Leali, M.; Lee, S.; Lenisa, P.; Li, X.; Livingston, K.; MacGregor, I. J. D.; Marchand, D.; Mascagna, V.; McKinnon, B.; McLauchlin, C.; Meziani, Z. E.; Migliorati, S.; Mineeva, T.; Mirazita, M.; Mokeev, V.; Camacho, C. Munoz; Nadel-Turonski, P.; Neupane, K.; Niccolai, S.; Nicol, M.; Niculescu, G.; Osipenko, M.; Ostrovidov, A. I.; Pandey, P.; Paolone, M.; Pappalardo, L. L.; Paremuzyan, R.; Pasyuk, E.; Paul, S. J.; Phelps, W.; Pilleux, N.; Pokhrel, M.; Poudel, J.; Price, J. W.; Prok, Y.; Raue, B. A.; Reed, T.; Richards, J.; Ripani, M.; Ritman, J.; Rosner, G.; Sabatie, F.; Salgado, C.; Schadmand, S.; Schmidt, A.; Schumacher, R. A.; Sharabian, Y. G.; Shirokov, E. V.; Shrestha, U.; Simmerling, P.; Sokhan, D.; Sparveris, N.; Stepanyan, S.; Strakovsky, I. I.; Strauch, S.; Tan, J. A.; Trotta, N.; Tyson, R.; Ungaro, M.; Vallarino, S.; Venturelli, L.; Voskanyan, H.; Voutier, E.; Wei, X.; Weinstein, L. B.; Williams, R.; Wishart, R.; Wood, M. H.; Yurov, M.; Zachariou, N.; Zhao, Z. W.; Zurek, M.

doi:10.1103/PhysRevLett.130.142301

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First Measurement of Λ Electroproduction off Nuclei in the Current and Target Fragmentation Regions

Chetry, T.;
El Fassi, L.;
Brooks, W. K.;
Dupre, R.;
El Alaoui, A.;
... Jo, H. S.;
외 149명

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7

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6

초록

We report results of. hyperon production in semi-inclusive deep-inelastic scattering off deuterium, carbon, iron, and lead targets obtained with the CLAS detector and the Continuous Electron Beam Accelerator Facility 5.014 GeV electron beam. These results represent the first measurements of the. multiplicity ratio and transverse momentum broadening as a function of the energy fraction (z) in the current and target fragmentation regions. The multiplicity ratio exhibits a strong suppression at high z and an enhancement at low z. The measured transverse momentum broadening is an order of magnitude greater than that seen for light mesons. This indicates that the propagating entity interacts very strongly with the nuclear medium, which suggests that propagation of diquark configurations in the nuclear medium takes place at least part of the time, even at high z. The trends of these results are qualitatively described by the Giessen Boltzmann-Uehling-Uhlenbeck transport model, particularly for the multiplicity ratios. These observations will potentially open a new era of studies of the structure of the nucleon as well as of strange baryons.

키워드

DEEP-INELASTIC SCATTERING; HADRON FORMATION; ENERGY-LOSS; HADRONIZATION; TRANSPARENCY; PARTONS; HERMES

제목: First Measurement of Λ Electroproduction off Nuclei in the Current and Target Fragmentation Regions

저자: Chetry, T.; El Fassi, L.; Brooks, W. K.; Dupre, R.; El Alaoui, A.; Hafidi, K.; Achenbach, P.; Adhikari, K. P.; Akbar, Z.; Armstrong, W. R.; Arratia, M.; Atac, H.; Avakian, H.; Baashen, L.; Baltzell, N. A.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Bedlinskiy, I.; Benkel, B.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bondi, M.; Booth, W. A.; Bossu, F.; Boiarinov, S.; Brinkmann, K. -Th.; Briscoe, W. J.; Bulumulla, D.; Burkert, V. D.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Chatagnon, P.; Chesnokov, V.; Ciullo, G.; Cole, P. L.; Contalbrigo, M.; Costantini, G.; D'Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Deur, A.; Diehl, S.; Djalali, C.; Egiyan, H.; Elouadrhiri, L.; Eugenio, P.; Fegan, S.; Filippi, A.; Gavalian, G.; Ghandilyan, Y.; Gilfoyle, G. P.; Glazier, D. I.; Golubenko, A. A.; Gosta, G.; Gothe, R. W.; Griffioen, K. A.; Guidal, M.; Guo, L.; Hakobyan, H.; Hattawy, M.; Hayward, T. B.; Heddle, D.; Hobart, A.; Holtrop, M.; Ilieva, Y.; Ireland, D. G.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Kabir, M. L.; Khanal, A.; Khandaker, M.; Kim, A.; Kim, W.; Klein, F. J.; Kripko, A.; Kubarovsky, V.; Lagerquist, V.; Lanza, L.; Leali, M.; Lee, S.; Lenisa, P.; Li, X.; Livingston, K.; MacGregor, I. J. D.; Marchand, D.; Mascagna, V.; McKinnon, B.; McLauchlin, C.; Meziani, Z. E.; Migliorati, S.; Mineeva, T.; Mirazita, M.; Mokeev, V.; Camacho, C. Munoz; Nadel-Turonski, P.; Neupane, K.; Niccolai, S.; Nicol, M.; Niculescu, G.; Osipenko, M.; Ostrovidov, A. I.; Pandey, P.; Paolone, M.; Pappalardo, L. L.; Paremuzyan, R.; Pasyuk, E.; Paul, S. J.; Phelps, W.; Pilleux, N.; Pokhrel, M.; Poudel, J.; Price, J. W.; Prok, Y.; Raue, B. A.; Reed, T.; Richards, J.; Ripani, M.; Ritman, J.; Rosner, G.; Sabatie, F.; Salgado, C.; Schadmand, S.; Schmidt, A.; Schumacher, R. A.; Sharabian, Y. G.; Shirokov, E. V.; Shrestha, U.; Simmerling, P.; Sokhan, D.; Sparveris, N.; Stepanyan, S.; Strakovsky, I. I.; Strauch, S.; Tan, J. A.; Trotta, N.; Tyson, R.; Ungaro, M.; Vallarino, S.; Venturelli, L.; Voskanyan, H.; Voutier, E.; Wei, X.; Weinstein, L. B.; Williams, R.; Wishart, R.; Wood, M. H.; Yurov, M.; Zachariou, N.; Zhao, Z. W.; Zurek, M.

DOI: 10.1103/PhysRevLett.130.142301

발행일: 2023-04-04

유형: Article

저널명: Physical Review Letters

권: 130

호: 14

언어: ENG

출판사: AMER PHYSICAL SOC

발행국가: 미국

ISSN: E 1079-7114
P 0031-9007