Comparison of recoil polarization in the C12(e→,e
            ′p→) process for protons extracted from s and p shells

T. Kolar; S. Paul; T. Brecelj; P. Achenbach; R. Böhm; D. Bosnar; E. O. Cohen; M. O. Distler; A. Esser; C. Giusti; M. Hoek; D. Izraeli; S. Kegel; Y. Kohl; I. Korover; J. Lichtenstadt; I. Mardor; H. Merkel; M. Mihovilovič; J. Müller; U. Müller; M. Olivenboim; E. Piasetzky; J. Pochodzalla; B. S. Schlimme; C. Sfienti; S. Širca; R. Spreckels; S. Štajner; M. Thiel; A. Weber; I. Yaron; for the A1 Collaboration

doi:10.1016/j.physletb.2020.135903

Comparison of recoil polarization in the C12(e→,e ^′p→) process for protons extracted from s and p shells

T. Kolar^* (Corresponding Author)
, S. Paul
, T. Brecelj
, P. Achenbach
, R. Böhm
, D. Bosnar
, E. O. Cohen
, M. O. Distler
, A. Esser
, C. Giusti
, M. Hoek
, D. Izraeli
, S. Kegel
, Y. Kohl
, I. Korover
, J. Lichtenstadt
, I. Mardor
, H. Merkel
, M. Mihovilovič
, J. Müller

U. Müller, M. Olivenboim, E. Piasetzky, J. Pochodzalla, B. S. Schlimme, C. Sfienti, S. Širca, R. Spreckels, S. Štajner, M. Thiel, A. Weber, I. Yaron, for the A1 Collaboration

^*Corresponding author for this work

Jožef Stefan Institute
Tel Aviv University
Johannes Gutenberg-Universität
Johannes Gutenberg University
University of Zagreb
University of South Carolina
University of Ljubljana
Johannes Gutenberg University Mainz
ožef Stefan Institute
Università degli Studi di Pavia

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

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Abstract

We present the first measurements of the double ratio of the polarization-transfer components (P _x ^′/P _z ^′) _p/(P _x ^′/P _z ^′) _s for knock-out protons from the s and p shells in C12 measured by the C12(e→,e ^′p→) reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in the relativistic distorted-wave impulse approximation. Our results show that the differences between s- and p-shell protons, observed when compared at the same initial momentum (missing momentum), largely disappear when the comparison is done at the same proton virtuality. We observe no difference in medium modifications between protons from the s and p shells with the same virtuality in spite of the large differences in the respective nuclear densities.

Original language	English
Article number	135903
Number of pages	7
Journal	Physics Letters B
Volume	811
Early online date	5 Nov 2020
DOIs	https://doi.org/10.1016/j.physletb.2020.135903
Publication status	Published - 10 Dec 2020

Bibliographical note

We would like to thank the Mainz Microtron operators and technical crew for the excellent operation of the accelerator. This work is supported by the Israel Science Foundation (Grants 390/15, 951/19) of the Israel Academy of Arts and Sciences, by the PAZY Foundation (Grant 294/18), by the Israel Ministry of Science, Technology and Space, by the Deutsche Forschungsgemeinschaft (Collaborative Research Center 1044), by the U.S. National Science Foundation (PHY-1205782). We acknowledge the financial supportfrom the Slovenian Research Agency (research core funding No. P1-0102) and from the Croatian Science Foundation (under the project 8570).

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Korlar_etal_PLB_Comparison_of_recoil_VoR
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Kolar, T., Paul, S., Brecelj, T., Achenbach, P., Böhm, R., Bosnar, D., Cohen, E. O., Distler, M. O., Esser, A., Giusti, C., Hoek, M., Izraeli, D., Kegel, S., Kohl, Y., Korover, I., Lichtenstadt, J., Mardor, I., Merkel, H., Mihovilovič, M., ... Collaboration, F. T. A. (2020). Comparison of recoil polarization in the C12(e→,e ^′p→) process for protons extracted from s and p shells. Physics Letters B, 811, Article 135903. https://doi.org/10.1016/j.physletb.2020.135903

Kolar, T, Paul, S, Brecelj, T, Achenbach, P, Böhm, R, Bosnar, D, Cohen, EO, Distler, MO, Esser, A, Giusti, C, Hoek, M, Izraeli, D, Kegel, S, Kohl, Y, Korover, I, Lichtenstadt, J, Mardor, I, Merkel, H, Mihovilovič, M, Müller, J, Müller, U, Olivenboim, M, Piasetzky, E, Pochodzalla, J, Schlimme, BS, Sfienti, C, Širca, S, Spreckels, R, Štajner, S, Thiel, M, Weber, A, Yaron, I & Collaboration, FTA 2020, 'Comparison of recoil polarization in the C12(e→,e ^′p→) process for protons extracted from s and p shells', Physics Letters B, vol. 811, 135903. https://doi.org/10.1016/j.physletb.2020.135903

@article{6e275af8707d4f6e8df7a5fea84228bf,

title = "Comparison of recoil polarization in the C12(e→,e ′p→) process for protons extracted from s and p shells",

abstract = "We present the first measurements of the double ratio of the polarization-transfer components (P x ′/P z ′) p/(P x ′/P z ′) s for knock-out protons from the s and p shells in C12 measured by the C12(e→,e ′p→) reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in the relativistic distorted-wave impulse approximation. Our results show that the differences between s- and p-shell protons, observed when compared at the same initial momentum (missing momentum), largely disappear when the comparison is done at the same proton virtuality. We observe no difference in medium modifications between protons from the s and p shells with the same virtuality in spite of the large differences in the respective nuclear densities.",

author = "T. Kolar and S. Paul and T. Brecelj and P. Achenbach and R. B{\"o}hm and D. Bosnar and Cohen, \{E. O.\} and Distler, \{M. O.\} and A. Esser and C. Giusti and M. Hoek and D. Izraeli and S. Kegel and Y. Kohl and I. Korover and J. Lichtenstadt and I. Mardor and H. Merkel and M. Mihovilovi{\v c} and J. M{\"u}ller and U. M{\"u}ller and M. Olivenboim and E. Piasetzky and J. Pochodzalla and Schlimme, \{B. S.\} and C. Sfienti and S. {\v S}irca and R. Spreckels and S. {\v S}tajner and M. Thiel and A. Weber and I. Yaron and Collaboration, \{for the A1\}",

note = "We would like to thank the Mainz Microtron operators and technical crew for the excellent operation of the accelerator. This work is supported by the Israel Science Foundation (Grants 390/15, 951/19) of the Israel Academy of Arts and Sciences, by the PAZY Foundation (Grant 294/18), by the Israel Ministry of Science, Technology and Space, by the Deutsche Forschungsgemeinschaft (Collaborative Research Center 1044), by the U.S. National Science Foundation (PHY-1205782). We acknowledge the financial supportfrom the Slovenian Research Agency (research core funding No. P1-0102) and from the Croatian Science Foundation (under the project 8570).",

year = "2020",

month = dec,

day = "10",

doi = "10.1016/j.physletb.2020.135903",

language = "English",

volume = "811",

journal = "Physics Letters B",

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TY - JOUR

T1 - Comparison of recoil polarization in the C12(e→,e ′p→) process for protons extracted from s and p shells

AU - Kolar, T.

AU - Paul, S.

AU - Brecelj, T.

AU - Achenbach, P.

AU - Böhm, R.

AU - Bosnar, D.

AU - Cohen, E. O.

AU - Distler, M. O.

AU - Esser, A.

AU - Giusti, C.

AU - Hoek, M.

AU - Izraeli, D.

AU - Kegel, S.

AU - Kohl, Y.

AU - Korover, I.

AU - Lichtenstadt, J.

AU - Mardor, I.

AU - Merkel, H.

AU - Mihovilovič, M.

AU - Müller, J.

AU - Müller, U.

AU - Olivenboim, M.

AU - Piasetzky, E.

AU - Pochodzalla, J.

AU - Schlimme, B. S.

AU - Sfienti, C.

AU - Širca, S.

AU - Spreckels, R.

AU - Štajner, S.

AU - Thiel, M.

AU - Weber, A.

AU - Yaron, I.

AU - Collaboration, for the A1

N1 - We would like to thank the Mainz Microtron operators and technical crew for the excellent operation of the accelerator. This work is supported by the Israel Science Foundation (Grants 390/15, 951/19) of the Israel Academy of Arts and Sciences, by the PAZY Foundation (Grant 294/18), by the Israel Ministry of Science, Technology and Space, by the Deutsche Forschungsgemeinschaft (Collaborative Research Center 1044), by the U.S. National Science Foundation (PHY-1205782). We acknowledge the financial supportfrom the Slovenian Research Agency (research core funding No. P1-0102) and from the Croatian Science Foundation (under the project 8570).

PY - 2020/12/10

Y1 - 2020/12/10

N2 - We present the first measurements of the double ratio of the polarization-transfer components (P x ′/P z ′) p/(P x ′/P z ′) s for knock-out protons from the s and p shells in C12 measured by the C12(e→,e ′p→) reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in the relativistic distorted-wave impulse approximation. Our results show that the differences between s- and p-shell protons, observed when compared at the same initial momentum (missing momentum), largely disappear when the comparison is done at the same proton virtuality. We observe no difference in medium modifications between protons from the s and p shells with the same virtuality in spite of the large differences in the respective nuclear densities.

AB - We present the first measurements of the double ratio of the polarization-transfer components (P x ′/P z ′) p/(P x ′/P z ′) s for knock-out protons from the s and p shells in C12 measured by the C12(e→,e ′p→) reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in the relativistic distorted-wave impulse approximation. Our results show that the differences between s- and p-shell protons, observed when compared at the same initial momentum (missing momentum), largely disappear when the comparison is done at the same proton virtuality. We observe no difference in medium modifications between protons from the s and p shells with the same virtuality in spite of the large differences in the respective nuclear densities.

UR - http://www.scopus.com/inward/record.url?scp=85095427741&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2020.135903

DO - 10.1016/j.physletb.2020.135903

M3 - Article

SN - 0370-2693

VL - 811

JO - Physics Letters B

JF - Physics Letters B

M1 - 135903

ER -

Comparison of recoil polarization in the C12(e→,e ^′p→) process for protons extracted from s and p shells

Abstract

Bibliographical note

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