Measurement of e+e- → π+π- cross-section with CMD-2 around ρ-meson

被引：201

作者：

Akhmetshin, RR ^{[1
]}

Anashkin, EV

Arbuzov, AB

Aulchenko, VM

Banzarov, VS

Barkov, LM

Baru, SE

Bashtovoy, NS

Bondar, AE

Bondarev, DV

Bragin, AV

Chernyak, DV

Dhawan, S

Eidelman, SI

Fedotovich, GV

Gabyshev, NI

Gorbachev, DA

Grebenuk, AA

Grigoriev, DN

Hughes, VW

Ignatov, FV

Karpov, SV

Kazanin, VF

Khazin, BI

Koop, IA

Krokovny, PP

Kuraev, EA

Kurdadze, LM

Kuzmin, AS

Logashenko, IB

Lukin, PA

Lysenko, AP

Mikhailov, KY

Miller, JP

Milstein, AI

Nesterenko, IN

Okhapkin, VS

Polunin, AA

Popov, AS

Purlatz, TA

Roberts, BL

Root, NI

Ruban, AA

Ryskulov, NM

Shamov, AG

Shatunov, YM

Shwartz, BA

Sibidanov, AL

Sidorov, VA

Skrinsky, AN

机构：

[1] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[2] Joint Inst Nucl Res, Dubna 141980, Russia

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

[4] Boston Univ, Boston, MA 02215 USA

[5] Yale Univ, New Haven, CT 06511 USA

[6] Univ Pittsburgh, Pittsburgh, PA 15260 USA

来源：

PHYSICS LETTERS B | 2002年 / 527卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(02)01168-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The cross-section of the process e(+)e(-) --> pi(+)pi(-) has been measured using about 114000 events collected by the CMD-2 detector at the VEPP-2M e(+)e(-) collider in the center-of-mass energy range from 0.61 to 0.96 GeV. Results of the pion form factor determination with a 0.6% systematic uncertainty are presented. The following values of the rho- and omega-meson parameters were found: Mrho = (776.09 +/- 0.81) MeV, Gamma(rho) = (144.46 +/- 1.55) MeV, Gamma(rho --> e(+)e(-)) = (6.86 +/- 0.12) keV, Br(omega --> pi(+)pi(-)) = (1.33 +/- 0.25)%. Implications for the hadronic contribution to the muon anomalous magnetic moment are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：161 / 172

页数：12

共 43 条

[1]

Aarnio P.A., 1990, TISRP190 CERN

[2] Measurement of the strong coupling constant αs and the vector and axial-vector spectral functions in hadronic tau decays [J].

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Ashby, SF ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Baumann, S ;

Bechtluft, J ;

Behnke, T ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Bethke, S ;

Betts, S ;

Biebel, O ;

Biguzzi, A ;

Bird, SD ;

Blobel, V ;

Bloodworth, IJ ;

Bobinski, M ;

Bock, P ;

Böhme, J ;

Boutemeur, M ;

Braibant, S ;

Bright-Thomas, P ;

Brown, RM ;

Burckhart, HJ ;

Burgard, C ;

Bürgin, R ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlton, DG ;

Chrisman, D ;

Ciocca, C ;

Clarke, PEL ;

Clay, E ;

Cohen, I .

EUROPEAN PHYSICAL JOURNAL C, 1999, 7 (04) :571-593

[3] Measurement of ω meson parameters in π+π-π0 decay mode with CMD-2 [J].

Akhmetshin, RR ;

Anashkin, EV ;

Aulchenko, VM ;

Banzarov, VS ;

Barkov, LM ;

Baru, SE ;

Bashtovoy, NS ;

Bondar, AE ;

Bondarev, DV ;

Chernyak, DV ;

Eidelman, SI ;

Fedotovich, GV ;

Bondarev, DV ;

Chernyak, DV ;

Eidelman, SI ;

Fedotovich, GV ;

Gabyshev, NI ;

Grebeniuk, AA ;

Grigoriev, DN ;

Khazin, BI ;

Koop, IA ;

Kurdadze, LM ;

Kuzmin, AS ;

Logashenko, IB ;

Lukin, PA ;

Lysenko, AP ;

Nesterenko, IN ;

Okhapkin, VS ;

Perevedentsev, EA ;

Polunin, AA ;

Purlatz, TA ;

Root, NI ;

Ruban, AA ;

Ryskulov, NM ;

Shamov, AG ;

Shatunov, YM ;

Shekhtman, AI ;

Sher, AE ;

Shwartz, BA ;

Sidorov, VA ;

Skrinsky, AN ;

Smakhtin, VP ;

Snopkov, IG ;

Solodov, EP ;

Stepanov, PY ;

Sukhanov, AI ;

Titov, VM ;

Valishev, AA ;

Yudin, YV ;

Zverev, SG .

PHYSICS LETTERS B, 2000, 476 (1-2) :33-39

[4]

AKHMETSHIN RR, 1999, 9911 BUDKERINP

[5] Improved determination of the hadronic contribution to the muon (g-2) and to α(MZ2) -: Using new data from hadronic τ decays [J].

Alemany, R ;

Davier, M ;

Hocker, A .

EUROPEAN PHYSICAL JOURNAL C, 1998, 2 (01) :123-135

[6]

ALOISIO A, HEPEX0107023

[7] Z-CHAMBER AND THE TRIGGER OF THE CMD-2 DETECTOR [J].

ANASHKIN, EV ;

AULCHENKO, VM ;

FEDORENKO, VE ;

FEDOTOVICH, GV ;

KHAZIN, BI ;

MAXIMOV, AV ;

PISKUNOV, GS ;

SNOPKOV, IG ;

SOLODOV, EP ;

TITOV, VM ;

ZAVARZIN, VG ;

YUDIN, YV .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 323 (1-2) :178-183

[8]

ANASHKIN EV, 1988, ICFA INSTR B, V5, P18

[9]

Anderson S, 2000, PHYS REV D, V61, DOI 10.1103/PhysRevD.61.112002

[10]

Arbuzov A. B., 1997, JHEP-Journal of High Energy Physics

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