Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments

M. Osipenko; G. Ricco; S. Simula; M. Ripani; M. Taiuti; K. P. Adhikari; M. J. Amaryan; M. Anghinolfi; H. Avakian; H. Baghdasaryan; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. S. Biselli; D. Branford; W. J. Briscoe; W. K. Brooks; V. D. Burkert; S. L. Careccia; D. S. Carman; P. L. Cole; P. Collins; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; B. Dey; S. Dhamija; R. Dickson; C. Djalali; D. Doughty; R. Dupre; H. Egiyan; A. El Alaoui; P. Eugenio; S. Fegan; T. A. Forest; A. Fradi; M. Y. Gabrielyan; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; W. Gohn; R. W. Gothe; K. A. Griffioen; L. Guo; K. Hafidi; H. Hakobyan; C. Hanretty; N. Hassall; D. Heddle; K. Hicks; M. Holtrop; Y. Ilieva; D. G. Ireland; E. L. Isupov; S. S. Jawalkar; H. S. Jo; K. Joo; D. Keller; M. Khandaker; P. Khetarpal; W. Kim; A. Klein; F. J. Klein; V. Kubarovsky; S. E. Kuhn; S. V. Kuleshov; V. Kuznetsov; K. Livingston; H. Y. Lu; D. Martinez; M. Mayer; J. McAndrew; M. E. McCracken; B. McKinnon; C. A. Meyer; M. Mirazita; V. Mokeev; B. Moreno; K. Moriya; B. Morrison; H. Moutarde; E. Munevar; P. Nadel-Turonski; R. Nasseripour; S. Niccolai; I. Niculescu; A. I. Ostrovidov; R. Paremuzyan; K. Park; S. Park; E. Pasyuk; S. Anefalos Pereira; S. Pisano; O. Pogorelko; S. Pozdniakov; J. W. Price; S. Procureur; Y. Prok; D. Protopopescu; B. A. Raue; G. Rosner; P. Rossi; F. Sabatié; M. S. Saini; J. Salamanca; C. Salgado; P. Saracco; R. A. Schumacher; H. Seraydaryan; Y. G. Sharabian; E. S. Smith; D. Sober; D. Sokhan; S. S. Stepanyan; S. Stepanyan; P. Stoler; S. Strauch; D. J. Tedeschi; S. Tkachenko; M. Ungaro; B. Vernarsky; M. F. Vineyard; E. Voutier; D. P. Watts; D. P. Weygand; M. H. Wood; A. Yegneswaran; J. Zhang; B. Zhao

doi:10.1016/j.nuclphysa.2010.05.059

Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments

M. Osipenko, G. Ricco, S. Simula, M. Ripani, M. Taiuti, K. P. Adhikari, M. J. Amaryan, M. Anghinolfi, H. Avakian, H. Baghdasaryan, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. S. Biselli, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. Burkert, S. L. Careccia, D. S. CarmanP. L. Cole, P. Collins, V. Crede, A. D'Angelo, A. Daniel, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, B. Dey, S. Dhamija, R. Dickson, C. Djalali, D. Doughty, R. Dupre, H. Egiyan, A. El Alaoui, P. Eugenio, S. Fegan, T. A. Forest, A. Fradi, M. Y. Gabrielyan, N. Gevorgyan, G. P. Gilfoyle, K. L. Giovanetti, W. Gohn, R. W. Gothe, K. A. Griffioen, L. Guo, K. Hafidi, H. Hakobyan, C. Hanretty, N. Hassall, D. Heddle, K. Hicks, M. Holtrop, Y. Ilieva, D. G. Ireland, E. L. Isupov, S. S. Jawalkar, H. S. Jo, K. Joo, D. Keller, M. Khandaker, P. Khetarpal, W. Kim, A. Klein, F. J. Klein, V. Kubarovsky, S. E. Kuhn, S. V. Kuleshov, V. Kuznetsov, K. Livingston, H. Y. Lu, D. Martinez, M. Mayer, J. McAndrew, M. E. McCracken, B. McKinnon, C. A. Meyer, M. Mirazita, V. Mokeev, B. Moreno, K. Moriya, B. Morrison, H. Moutarde, E. Munevar, P. Nadel-Turonski, R. Nasseripour, S. Niccolai, I. Niculescu, A. I. Ostrovidov, R. Paremuzyan, K. Park, S. Park, E. Pasyuk, S. Anefalos Pereira, S. Pisano, O. Pogorelko, S. Pozdniakov, J. W. Price, S. Procureur, Y. Prok, D. Protopopescu, B. A. Raue, G. Rosner, P. Rossi, F. Sabatié, M. S. Saini, J. Salamanca, C. Salgado, P. Saracco, R. A. Schumacher, H. Seraydaryan, Y. G. Sharabian, E. S. Smith, D. Sober, D. Sokhan, S. S. Stepanyan, S. Stepanyan, P. Stoler, S. Strauch, D. J. Tedeschi, S. Tkachenko, M. Ungaro, B. Vernarsky, M. F. Vineyard, E. Voutier, D. P. Watts, D. P. Weygand, M. H. Wood, A. Yegneswaran, J. Zhang, B. Zhao

Physics and Astronomy (Twin Cities)

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6 Scopus citations

Abstract

We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W≈2.4 GeV with four-momentum transfers Q2 ranging from 0.2 to 5(GeV/c)2. These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q2-evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F2 moments exhibits the well-known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainties, to be smaller with respect to the deuteron case for n<7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.

Original language	English (US)
Pages (from-to)	1-32
Number of pages	32
Journal	Nuclear Physics A
Volume	845
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2010.05.059
State	Published - Nov 2010

Bibliographical note

Funding Information:
This work was supported by the Istituto Nazionale di Fisica Nucleare, the French Commissariat à l’Energie Atomique, the French Centre National de la Recherche Scientifique, the U.S. Department of Energy, the National Science Foundation and the National Research Foundation of Korea. The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-84ER40150.

Keywords

Higher twists
Moments
Nuclear modifications
Nucleon structure
OPE
QCD

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Osipenko, M., Ricco, G., Simula, S., Ripani, M., Taiuti, M., Adhikari, K. P., Amaryan, M. J., Anghinolfi, M., Avakian, H., Baghdasaryan, H., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Branford, D., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Careccia, S. L., ... Zhao, B. (2010). Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments. Nuclear Physics A, 845(1-4), 1-32. https://doi.org/10.1016/j.nuclphysa.2010.05.059

Osipenko, M, Ricco, G, Simula, S, Ripani, M, Taiuti, M, Adhikari, KP, Amaryan, MJ, Anghinolfi, M, Avakian, H, Baghdasaryan, H, Battaglieri, M, Batourine, V, Bedlinskiy, I, Biselli, AS, Branford, D, Briscoe, WJ, Brooks, WK, Burkert, VD, Careccia, SL, Carman, DS, Cole, PL, Collins, P, Crede, V, D'Angelo, A, Daniel, A, Dashyan, N, De Vita, R, De Sanctis, E, Deur, A, Dey, B, Dhamija, S, Dickson, R, Djalali, C, Doughty, D, Dupre, R, Egiyan, H, El Alaoui, A, Eugenio, P, Fegan, S, Forest, TA, Fradi, A, Gabrielyan, MY, Gevorgyan, N, Gilfoyle, GP, Giovanetti, KL, Gohn, W, Gothe, RW, Griffioen, KA, Guo, L, Hafidi, K, Hakobyan, H, Hanretty, C, Hassall, N, Heddle, D, Hicks, K, Holtrop, M, Ilieva, Y, Ireland, DG, Isupov, EL, Jawalkar, SS, Jo, HS, Joo, K, Keller, D, Khandaker, M, Khetarpal, P, Kim, W, Klein, A, Klein, FJ, Kubarovsky, V, Kuhn, SE, Kuleshov, SV, Kuznetsov, V, Livingston, K, Lu, HY, Martinez, D, Mayer, M, McAndrew, J, McCracken, ME, McKinnon, B, Meyer, CA, Mirazita, M, Mokeev, V, Moreno, B, Moriya, K, Morrison, B, Moutarde, H, Munevar, E, Nadel-Turonski, P, Nasseripour, R, Niccolai, S, Niculescu, I, Ostrovidov, AI, Paremuzyan, R, Park, K, Park, S, Pasyuk, E, Anefalos Pereira, S, Pisano, S, Pogorelko, O, Pozdniakov, S, Price, JW, Procureur, S, Prok, Y, Protopopescu, D, Raue, BA, Rosner, G, Rossi, P, Sabatié, F, Saini, MS, Salamanca, J, Salgado, C, Saracco, P, Schumacher, RA, Seraydaryan, H, Sharabian, YG, Smith, ES, Sober, D, Sokhan, D, Stepanyan, SS, Stepanyan, S, Stoler, P, Strauch, S, Tedeschi, DJ, Tkachenko, S, Ungaro, M, Vernarsky, B, Vineyard, MF, Voutier, E, Watts, DP, Weygand, DP, Wood, MH, Yegneswaran, A, Zhang, J & Zhao, B 2010, 'Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments', Nuclear Physics A, vol. 845, no. 1-4, pp. 1-32. https://doi.org/10.1016/j.nuclphysa.2010.05.059

@article{5acdebf8610a46109b0e42b29a9aaaa5,

title = "Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments",

abstract = "We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W≈2.4 GeV with four-momentum transfers Q2 ranging from 0.2 to 5(GeV/c)2. These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q2-evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F2 moments exhibits the well-known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainties, to be smaller with respect to the deuteron case for n<7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.",

keywords = "Higher twists, Moments, Nuclear modifications, Nucleon structure, OPE, QCD",

author = "M. Osipenko and G. Ricco and S. Simula and M. Ripani and M. Taiuti and Adhikari, {K. P.} and Amaryan, {M. J.} and M. Anghinolfi and H. Avakian and H. Baghdasaryan and M. Battaglieri and V. Batourine and I. Bedlinskiy and Biselli, {A. S.} and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Careccia, {S. L.} and Carman, {D. S.} and Cole, {P. L.} and P. Collins and V. Crede and A. D'Angelo and A. Daniel and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and A. Deur and B. Dey and S. Dhamija and R. Dickson and C. Djalali and D. Doughty and R. Dupre and H. Egiyan and {El Alaoui}, A. and P. Eugenio and S. Fegan and Forest, {T. A.} and A. Fradi and Gabrielyan, {M. Y.} and N. Gevorgyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and W. Gohn and Gothe, {R. W.} and Griffioen, {K. A.} and L. Guo and K. Hafidi and H. Hakobyan and C. Hanretty and N. Hassall and D. Heddle and K. Hicks and M. Holtrop and Y. Ilieva and Ireland, {D. G.} and Isupov, {E. L.} and Jawalkar, {S. S.} and Jo, {H. S.} and K. Joo and D. Keller and M. Khandaker and P. Khetarpal and W. Kim and A. Klein and Klein, {F. J.} and V. Kubarovsky and Kuhn, {S. E.} and Kuleshov, {S. V.} and V. Kuznetsov and K. Livingston and Lu, {H. Y.} and D. Martinez and M. Mayer and J. McAndrew and McCracken, {M. E.} and B. McKinnon and Meyer, {C. A.} and M. Mirazita and V. Mokeev and B. Moreno and K. Moriya and B. Morrison and H. Moutarde and E. Munevar and P. Nadel-Turonski and R. Nasseripour and S. Niccolai and I. Niculescu and Ostrovidov, {A. I.} and R. Paremuzyan and K. Park and S. Park and E. Pasyuk and {Anefalos Pereira}, S. and S. Pisano and O. Pogorelko and S. Pozdniakov and Price, {J. W.} and S. Procureur and Y. Prok and D. Protopopescu and Raue, {B. A.} and G. Rosner and P. Rossi and F. Sabati{\'e} and Saini, {M. S.} and J. Salamanca and C. Salgado and P. Saracco and Schumacher, {R. A.} and H. Seraydaryan and Sharabian, {Y. G.} and Smith, {E. S.} and D. Sober and D. Sokhan and Stepanyan, {S. S.} and S. Stepanyan and P. Stoler and S. Strauch and Tedeschi, {D. J.} and S. Tkachenko and M. Ungaro and B. Vernarsky and Vineyard, {M. F.} and E. Voutier and Watts, {D. P.} and Weygand, {D. P.} and Wood, {M. H.} and A. Yegneswaran and J. Zhang and B. Zhao",

note = "Funding Information: This work was supported by the Istituto Nazionale di Fisica Nucleare, the French Commissariat {\`a} l{\textquoteright}Energie Atomique, the French Centre National de la Recherche Scientifique, the U.S. Department of Energy, the National Science Foundation and the National Research Foundation of Korea. The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-84ER40150.",

year = "2010",

month = nov,

doi = "10.1016/j.nuclphysa.2010.05.059",

language = "English (US)",

volume = "845",

pages = "1--32",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments

AU - Osipenko, M.

AU - Ricco, G.

AU - Simula, S.

AU - Ripani, M.

AU - Taiuti, M.

AU - Adhikari, K. P.

AU - Amaryan, M. J.

AU - Anghinolfi, M.

AU - Avakian, H.

AU - Baghdasaryan, H.

AU - Battaglieri, M.

AU - Batourine, V.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Careccia, S. L.

AU - Carman, D. S.

AU - Cole, P. L.

AU - Collins, P.

AU - Crede, V.

AU - D'Angelo, A.

AU - Daniel, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Dey, B.

AU - Dhamija, S.

AU - Dickson, R.

AU - Djalali, C.

AU - Doughty, D.

AU - Dupre, R.

AU - Egiyan, H.

AU - El Alaoui, A.

AU - Eugenio, P.

AU - Fegan, S.

AU - Forest, T. A.

AU - Fradi, A.

AU - Gabrielyan, M. Y.

AU - Gevorgyan, N.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Gohn, W.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guo, L.

AU - Hafidi, K.

AU - Hakobyan, H.

AU - Hanretty, C.

AU - Hassall, N.

AU - Heddle, D.

AU - Hicks, K.

AU - Holtrop, M.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Isupov, E. L.

AU - Jawalkar, S. S.

AU - Jo, H. S.

AU - Joo, K.

AU - Keller, D.

AU - Khandaker, M.

AU - Khetarpal, P.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Kubarovsky, V.

AU - Kuhn, S. E.

AU - Kuleshov, S. V.

AU - Kuznetsov, V.

AU - Livingston, K.

AU - Lu, H. Y.

AU - Martinez, D.

AU - Mayer, M.

AU - McAndrew, J.

AU - McCracken, M. E.

AU - McKinnon, B.

AU - Meyer, C. A.

AU - Mirazita, M.

AU - Mokeev, V.

AU - Moreno, B.

AU - Moriya, K.

AU - Morrison, B.

AU - Moutarde, H.

AU - Munevar, E.

AU - Nadel-Turonski, P.

AU - Nasseripour, R.

AU - Niccolai, S.

AU - Niculescu, I.

AU - Ostrovidov, A. I.

AU - Paremuzyan, R.

AU - Park, K.

AU - Park, S.

AU - Pasyuk, E.

AU - Anefalos Pereira, S.

AU - Pisano, S.

AU - Pogorelko, O.

AU - Pozdniakov, S.

AU - Price, J. W.

AU - Procureur, S.

AU - Prok, Y.

AU - Protopopescu, D.

AU - Raue, B. A.

AU - Rosner, G.

AU - Rossi, P.

AU - Sabatié, F.

AU - Saini, M. S.

AU - Salamanca, J.

AU - Salgado, C.

AU - Saracco, P.

AU - Schumacher, R. A.

AU - Seraydaryan, H.

AU - Sharabian, Y. G.

AU - Smith, E. S.

AU - Sober, D.

AU - Sokhan, D.

AU - Stepanyan, S. S.

AU - Stepanyan, S.

AU - Stoler, P.

AU - Strauch, S.

AU - Tedeschi, D. J.

AU - Tkachenko, S.

AU - Ungaro, M.

AU - Vernarsky, B.

AU - Vineyard, M. F.

AU - Voutier, E.

AU - Watts, D. P.

AU - Weygand, D. P.

AU - Wood, M. H.

AU - Yegneswaran, A.

AU - Zhang, J.

AU - Zhao, B.

N1 - Funding Information: This work was supported by the Istituto Nazionale di Fisica Nucleare, the French Commissariat à l’Energie Atomique, the French Centre National de la Recherche Scientifique, the U.S. Department of Energy, the National Science Foundation and the National Research Foundation of Korea. The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under contract DE-AC05-84ER40150.

PY - 2010/11

Y1 - 2010/11

N2 - We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W≈2.4 GeV with four-momentum transfers Q2 ranging from 0.2 to 5(GeV/c)2. These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q2-evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F2 moments exhibits the well-known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainties, to be smaller with respect to the deuteron case for n<7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.

AB - We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W≈2.4 GeV with four-momentum transfers Q2 ranging from 0.2 to 5(GeV/c)2. These data, together with previous measurements of the inclusive electron scattering off proton and deuteron, which cover a similar continuous two-dimensional region of Q2 and Bjorken variable x, permit the study of nuclear modifications of the nucleon structure. By using these, as well as other world data, we evaluated the F2 structure function and its moments. Using an OPE-based twist expansion, we studied the Q2-evolution of the moments, obtaining a separation of the leading-twist and the total higher-twist terms. The carbon-to-deuteron ratio of the leading-twist contributions to the F2 moments exhibits the well-known EMC effect, compatible with that discovered previously in x-space. The total higher-twist term in the carbon nucleus appears, although with large systematic uncertainties, to be smaller with respect to the deuteron case for n<7, suggesting partial parton deconfinement in nuclear matter. We speculate that the spatial extension of the nucleon is changed when it is immersed in the nuclear medium.

KW - Higher twists

KW - Moments

KW - Nuclear modifications

KW - Nucleon structure

KW - OPE

KW - QCD

UR - http://www.scopus.com/inward/record.url?scp=77955090390&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955090390&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2010.05.059

DO - 10.1016/j.nuclphysa.2010.05.059

M3 - Article

AN - SCOPUS:77955090390

SN - 0375-9474

VL - 845

SP - 1

EP - 32

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-4

ER -

Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments

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