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Title: Measurement of the e +e -→π +π - cross section between 600 and 900 MeV using initial state radiation

Abstract

We extract the e +e -→π +π - cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93 fb -1 taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider is used. The cross section is measured with a systematic uncertainty of 0.9%. We extract the pion form factor |F π| 2 as well as the contribution of the measured cross section to the leading-order hadronic vacuum polarization contribution to (g-2) μ. In conclusion, we find this value to be a π μ π,LO (600–900 MeV) = (368.2 ±2.5 stat±3.3 sys) ·10 -10, which is between the corresponding values using the BaBar or KLOE data.

Authors:
 [1]
  1. et. al.
Publication Date:
Research Org.:
Indiana Univ., Bloomington, IN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1227233
Alternate Identifier(s):
OSTI ID: 1242353
Grant/Contract Number:  
FG02-04ER41291; FG02-05ER41374; FG02- 94ER40823; SC0010118; FG02-94ER40823; DESC0010118
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 753; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Hadronic cross section; Muon anomaly; Initial state radiation; Pion form factor; BESIII

Citation Formats

Ablikim, M. Measurement of the e+e-→π+π- cross section between 600 and 900 MeV using initial state radiation. United States: N. p., 2015. Web. doi:10.1016/j.physletb.2015.11.043.
Ablikim, M. Measurement of the e+e-→π+π- cross section between 600 and 900 MeV using initial state radiation. United States. doi:10.1016/j.physletb.2015.11.043.
Ablikim, M. Sat . "Measurement of the e+e-→π+π- cross section between 600 and 900 MeV using initial state radiation". United States. doi:10.1016/j.physletb.2015.11.043.
@article{osti_1227233,
title = {Measurement of the e+e-→π+π- cross section between 600 and 900 MeV using initial state radiation},
author = {Ablikim, M.},
abstractNote = {We extract the e+e-→π+π- cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated luminosity of 2.93 fb-1 taken at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider is used. The cross section is measured with a systematic uncertainty of 0.9%. We extract the pion form factor |Fπ|2 as well as the contribution of the measured cross section to the leading-order hadronic vacuum polarization contribution to (g-2)μ. In conclusion, we find this value to be aπμπ,LO (600–900 MeV) = (368.2 ±2.5stat±3.3sys) ·10-10, which is between the corresponding values using the BaBar or KLOE data.},
doi = {10.1016/j.physletb.2015.11.043},
journal = {Physics Letters. Section B},
number = C,
volume = 753,
place = {United States},
year = {Sat Nov 28 00:00:00 EST 2015},
month = {Sat Nov 28 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2015.11.043

Citation Metrics:
Cited by: 43 works
Citation information provided by
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