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Precision measurement of the e(+)e(-) -> lambda(+)(c)(lambda)over-bar(c)(-) cross section near threshold

文献类型:期刊论文

AuthorAblikim, M.1; Achasov, M. N.9,72; Ahmed, S.14; Albrecht, M.4; Alekseev, M.61,63; Amoroso, A.61,63; An, F. F.1; An, Q.45,58; Bai, J. Z.1; Bai, Y.44
SourcePhysical review letters
Issued Date2018-03-29
Volume120Issue:13Pages:8
ISSN0031-9007
DOI10.1103/physrevlett.120.132001
Corresponding AuthorAblikim, m.()
English AbstractThe cross section of the e(+)e(-) -> lambda(+)(c)(lambda) over bar (-)(c) process is measured with unprecedented precision using data collected with the besiii detector at root s = 4574.5, 4580.0, 4590.0 and 4599.5 mev. the nonzero cross section near the lambda(+)(c)(lambda) over bar (-)(c) production threshold is cleared. at center-of-mass energies root s = 4574.5 and 4599.5 mev, the higher statistics data enable us to measure the lambda(c) polar angle distributions. from these, the.c electric over magnetic form-factor ratios (vertical bar g(e)/g(m)vertical bar) are measured for the first time. they are found to be 1.14 +/- 0.14 +/- 0.07 and 1.23 +/- 0.05 +/- 0.03, respectively, where the first uncertainties are statistical and the second are systematic.
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Language英语
WOS IDWOS:000428653700003
PublisherAMER PHYSICAL SOC
URIhttp://www.irgrid.ac.cn/handle/1471x/2178214
Collection高能物理研究所
Corresponding AuthorAblikim, M.
Affiliation1.Inst High Energy Phys, Beijing 100049, Peoples R China
2.Beihang Univ, Beijing 100191, Peoples R China
3.Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China
4.Bochum Ruhr Univ, D-44780 Bochum, Germany
5.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
6.Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China
7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China
8.COMSATS Inst Informat Technol, Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan
9.GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia
10.GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany
Recommended Citation
GB/T 7714
Ablikim, M.,Achasov, M. N.,Ahmed, S.,et al. Precision measurement of the e(+)e(-) -> lambda(+)(c)(lambda)over-bar(c)(-) cross section near threshold[J]. Physical review letters,2018,120(13):8.
APA Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Alekseev, M..,...&Zou, J. H..(2018).Precision measurement of the e(+)e(-) -> lambda(+)(c)(lambda)over-bar(c)(-) cross section near threshold.Physical review letters,120(13),8.
MLA Ablikim, M.,et al."Precision measurement of the e(+)e(-) -> lambda(+)(c)(lambda)over-bar(c)(-) cross section near threshold".Physical review letters 120.13(2018):8.

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