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Title: Separated kaon electroproduction cross section and the kaon form factor from 6 GeV JLab data

Abstract

The $$^{1}H$$($$e,e^\prime K^+$$)$$\Lambda$$ reaction was studied as a function of the Mandelstam variable $-t$ using data from the E01-004 (FPI-2) and E93-018 experiments that were carried out in Hall C at the 6 GeV Jefferson Lab. The cross section was fully separated into longitudinal and transverse components, and two interference terms at four-momentum transfers $Q^2$ of 1.00, 1.36 and 2.07 GeV$^2$. The kaon form factor was extracted from the longitudinal cross section using the Regge model by Vanderhaeghen, Guidal, and Laget. The results establish the method, previously used successfully for pion analyses, for extracting the kaon form factor. Data from 12 GeV Jefferson Lab experiments are expected to have sufficient precision to distinguish between theoretical predictions, for example recent perturbative QCD calculations with modern parton distribution amplitudes. The leading-twist behavior for light mesons is predicted to set in for values of $Q^2$ between 5-10 GeV$^2$, which makes data in the few GeV regime particularly interesting. The $Q^2$ dependence at fixed $x$ and $-t$ of the longitudinal cross section we extracted seems consistent with the QCD factorization prediction within the experimental uncertainty.

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Org.:
JLAB FPI-2 and E93-018 Collaboration
OSTI Identifier:
1427724
Alternate Identifier(s):
OSTI ID: 1423158; OSTI ID: 1431084; OSTI ID: 1830322
Report Number(s):
JLAB-PHY-18-2645; DOE/OR/23177-4348; arXiv:1801.01536
Journal ID: ISSN 2469-9985; PRVCAN; 141230; TRN: US1802466
Grant/Contract Number:  
AC02-06CH11357; AC05-06OR23177; AC02-05CH11231; PHY1714133; PHY1306227; PHY1306418
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Lepton induced nuclear reactions; photonuclear reactions; baryons; heavy mesons

Citation Formats

Carmignotto, M., Ali, S., Aniol, K., Arrington, J., Barrett, B., Beise, E. J., Blok, H. P., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Dittmann, A., Ent, R., Fenker, H., Gaskell, D., Gibson, E., Holt, R. J., Horn, T., Huber, G. M., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, G., Niculescu, I., Okayasu, Y., Pegg, I. L., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P. E., Reinhold, J., Roche, J., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Trotta, R., Tvaskis, V., Vargas, A., Vidakovic, S., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X. Separated kaon electroproduction cross section and the kaon form factor from 6 GeV JLab data. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.025204.
Carmignotto, M., Ali, S., Aniol, K., Arrington, J., Barrett, B., Beise, E. J., Blok, H. P., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Dittmann, A., Ent, R., Fenker, H., Gaskell, D., Gibson, E., Holt, R. J., Horn, T., Huber, G. M., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, G., Niculescu, I., Okayasu, Y., Pegg, I. L., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P. E., Reinhold, J., Roche, J., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Trotta, R., Tvaskis, V., Vargas, A., Vidakovic, S., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., & Zheng, X. Separated kaon electroproduction cross section and the kaon form factor from 6 GeV JLab data. United States. https://doi.org/10.1103/PhysRevC.97.025204
Carmignotto, M., Ali, S., Aniol, K., Arrington, J., Barrett, B., Beise, E. J., Blok, H. P., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Dittmann, A., Ent, R., Fenker, H., Gaskell, D., Gibson, E., Holt, R. J., Horn, T., Huber, G. M., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, G., Niculescu, I., Okayasu, Y., Pegg, I. L., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P. E., Reinhold, J., Roche, J., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Trotta, R., Tvaskis, V., Vargas, A., Vidakovic, S., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X. Wed . "Separated kaon electroproduction cross section and the kaon form factor from 6 GeV JLab data". United States. https://doi.org/10.1103/PhysRevC.97.025204. https://www.osti.gov/servlets/purl/1427724.
@article{osti_1427724,
title = {Separated kaon electroproduction cross section and the kaon form factor from 6 GeV JLab data},
author = {Carmignotto, M. and Ali, S. and Aniol, K. and Arrington, J. and Barrett, B. and Beise, E. J. and Blok, H. P. and Boeglin, W. and Brash, E. J. and Breuer, H. and Chang, C. C. and Christy, M. E. and Dittmann, A. and Ent, R. and Fenker, H. and Gaskell, D. and Gibson, E. and Holt, R. J. and Horn, T. and Huber, G. M. and Jin, S. and Jones, M. K. and Keppel, C. E. and Kim, W. and King, P. M. and Kovaltchouk, V. and Liu, J. and Lolos, G. J. and Mack, D. J. and Margaziotis, D. J. and Markowitz, P. and Matsumura, A. and Meekins, D. and Miyoshi, T. and Mkrtchyan, H. and Niculescu, G. and Niculescu, I. and Okayasu, Y. and Pegg, I. L. and Pentchev, L. and Perdrisat, C. and Potterveld, D. and Punjabi, V. and Reimer, P. E. and Reinhold, J. and Roche, J. and Sarty, A. and Smith, G. R. and Tadevosyan, V. and Tang, L. G. and Trotta, R. and Tvaskis, V. and Vargas, A. and Vidakovic, S. and Volmer, J. and Vulcan, W. and Warren, G. and Wood, S. A. and Xu, C. and Zheng, X.},
abstractNote = {The $^{1}H$($e,e^\prime K^+$)$\Lambda$ reaction was studied as a function of the Mandelstam variable $-t$ using data from the E01-004 (FPI-2) and E93-018 experiments that were carried out in Hall C at the 6 GeV Jefferson Lab. The cross section was fully separated into longitudinal and transverse components, and two interference terms at four-momentum transfers $Q^2$ of 1.00, 1.36 and 2.07 GeV$^2$. The kaon form factor was extracted from the longitudinal cross section using the Regge model by Vanderhaeghen, Guidal, and Laget. The results establish the method, previously used successfully for pion analyses, for extracting the kaon form factor. Data from 12 GeV Jefferson Lab experiments are expected to have sufficient precision to distinguish between theoretical predictions, for example recent perturbative QCD calculations with modern parton distribution amplitudes. The leading-twist behavior for light mesons is predicted to set in for values of $Q^2$ between 5-10 GeV$^2$, which makes data in the few GeV regime particularly interesting. The $Q^2$ dependence at fixed $x$ and $-t$ of the longitudinal cross section we extracted seems consistent with the QCD factorization prediction within the experimental uncertainty.},
doi = {10.1103/PhysRevC.97.025204},
journal = {Physical Review C},
number = 2,
volume = 97,
place = {United States},
year = {2018},
month = {2}
}

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Figures / Tables:

Figure 1 Figure 1: Missing mass distribution of events within the real and random coincidence time window for the FPI-2 setting Q2=2.07 GeV2 and −t=0.39 (GeV/c)2, integrated over the azimuthal angle. Also shown is the dummy target distribution.

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.