Precise measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>π</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup><mml:mo mathvariant="bold" stretchy="false">(</mml:mo><mml:mi>γ</mml:mi><mml:mo mathvariant="bold" stretchy="false">)</mml:mo></mml:math>cross section with the initial-state radiation method at<i>BABAR</i>

J. P. Lees; V. Poireau; V. Tisserand; J. Garra Ticó; E. Graugés; A. Palano; G. Eigen; B. Stugu; D. N. Brown; L. T. Kerth; Yu. G. Kolomensky; G. Lynch; H. Koch; T. Vazquez Schroeder; D. J. Asgeirsson; C. Hearty; T. S. Mattison; J. A. McKenna; A. Khan; V. E. Blinov; А. Р. Бузыкаев; V. P. Druzhinin; V. B. Golubev; Э. А. Кравченко; A. P. Onuchin; S. I. Serednyakov; Yu. I. Skovpen; E. P. Solodov; K. Yu. Todyshev; A. N. Yushkov; M. Bondioli; D. Kirkby; A. J. Lankford; M. Mandelkern; H. Atmacan; J. W. Gary; F. Liu; O. Long; G. M. Vitug; C. Campagnari; T. M. Hong; D. Kovalskyi; J. D. Richman; Christopher West; A. M. Eisner; J. Kroseberg; W. S. Lockman; A. J. Martínez; B. A. Schumm; A. Seiden; D. S. Chao; C. H. Cheng; B. Echenard; K. T. Flood; D. G. Hitlin; P. Ongmongkolkul; F. C. Porter; A. Y. Rakitin; R. Andreassen; Z. Huard; J. V. Mead; M. D. Sokoloff; L. Sun; P. C. Bloom; W. T. Ford; A. Gaz; U. Nauenberg; J. Smith; S. R. Wagner; R. Ayad; W. H. Toki; B. Spaan; K. R. Schubert; R. Schwierz; D. Bernard; M. Verderi; P. J. Clark; S. Playfer; D. Bettoni; C. Bozzi; R. Calabrese; G. Cibinetto; E. Fioravanti; I. Garzia; E. Luppi; M. Munerato; M. Negrini; L. Piemontese; V. Santoro; R. Baldini-Ferroli; A. Calcaterra; R. de Sangro; G. Finocchiaro; P. Patteri; I. M. Peruzzi; Marisa de Cássia Píccolo; M. Rama; A. Zallo; R. Contri; E. Guido; M. Lo Vetere; M. R. Monge; S. Passaggio; C. Patrignani; E. Robutti; B. Bhuyan; V. Prasad; C. L. Lee; M. Morii; A. J. Edwards; A. Adametz; U. Uwer; H. M. Lacker; T. Lueck; P. D. Dauncey; P. K. Behera; U. Mallik; C. Chen; J. Cochran; W. T. Meyer; S. Prell; A. E. Rubin; A. V. Gritsan; Z. J. Guo; N. Arnaud; M. Davier; D. Derkach; G. Grosdidier; F. Le Diberder; A. M. Lutz; B. Malaescu; P. Roudeau; M. H. Schune; A. Stocchi; L. L. Wang; G. Wormser; D. J. Lange; D. Wright; C. A. Chavez; J. P. Coleman; J. R. Fry; E. Gabathuler; D. Hutchcroft; D. J. Payne; C. Touramanis; A. J. Bevan; F. Di Lodovico; R. Sacco; M. Sigamani; G. Cowan; D. N. Brown; C. L. Davis; A. G. Denig; M. Fritsch; W. Gradl; K. Grießinger; A. Hafner; E. Prencipe; R. J. Barlow; G. Jackson; G. Lafferty; E. Behn; R. Cenci; B. Hamilton; A. Jawahery; D. A. Roberts; C. Dallapiccola; R. Cowan; D. Dujmic; G. Sciolla; R. Cheaib; D. Lindemann; P. M. Patel; S. H. Robertson; P. Biassoni; N. Néri; F. Palombo; S. Stracka; L. Cremaldi; R. Godang; R. Kroeger; P. Sonnek; D. J. Summers; X. Nguyen; M. Simard; P. Taras; G. De Nardo; D. Monorchio; G. Onorato; C. Sciacca; M. Martinelli; G. Raven; C. P. Jessop; J. M. LoSecco; W. F. Wang; K. Honscheid; R. Kass; J. Brau; R. Frey; N. B. Sinev; D. Strom; E. Torrence; E. Feltresi; N. Gagliardi; M. Margoni; M. Morandin; M. Posocco; M. Rotondo; G. Simi; F. Simonetto; R. Stroili; S. Akar; E. Ben-Haim; M. Bomben; G. R. Bonneaud; H. Briand; G. Calderini; Janic Chauveau; O. Hamon; Ph. Leruste; G. Marchiori; J. Ocariz; S. Sitt; M. Biasini; E. Manoni; S. Pacetti; A. Rossi; C. Angelini; G. Batignani; S. Bettarini; M. Carpinelli; G. Casarosa; A. Cervelli; F. Forti; M. A. Giorgi; A. Lusiani; B. Oberhof; E. Paoloni; A. Pérez; G. Rizzo; J. Walsh; D. Lopes Pegna; J. Olsen; A. J. S. Smith; A. V. Telnov; F. Anulli; R. Faccini; F. Ferrarotto; F. Ferroni; M. Gaspero; L. Li Gioi; M. A. Mazzoni; G. Piredda; C. Bünger; O. Grünberg; T. Hartmann; T. Leddig; H. Schröder; C. Voß; R. Waldi; T. Adye; E. O. Olaiya; F. F. Wilson; S. Emery; G. Hamel de Monchenault; G. Vasseur; Ch. Yéche; D. Aston; D. J. Bard; R. Bartoldus; J. F. Benitez; C. Cartaro; M. R. Convery; J. Dorfan; G. P. Dubois-Felsmann; W. Dunwoodie; M. Ebert; R. C. Field; M. Franco Sevilla; B. G. Fulsom; A. M. Gabareen; M. T. Graham; P. Grenier; C. Hast; W. R. Innes; M. H. Kelsey; P. Kim; M. L. Kocian; D. W. G. S. Leith; P. Lewis; B. Lindquist; S. Luitz; V. Lüth; H. L. Lynch; D. B. MacFarlane; D. R. Müller; H. A. Neal; S. Nelson; M. Perl; T. Pulliam; B. N. Ratcliff; A. Roodman; A. A. Salnikov; R. H. Schindler; A. Snyder; D. Su; M. K. Sullivan; J. Va’vra; A. P. Wagner; W. J. Wisniewski; M. Wittgen; D. H. Wright; H. W. Wulsin; C. C. Young; V. Ziegler; W. Park; M. V. Purohit; R. M. White; R. J. Wilson; A. Randle-Conde; S. J. Sekula; M. Bellis; P. R. Burchat; T. S. Miyashita; M. S. Alam; J. Ernst; R. Gorodeisky; N. Guttman; D. R. Peimer; A. Soffer; P. Lund; S. Spanier; J. L. Ritchie; A. M. Ruland; R. F. Schwitters; B. C. Wray; J. M. Izen; X. C. Lou; F. Bianchi; D. Gamba; L. Lanceri; L. Vitale; F. Martínez-Vidal; A. Oyanguren; H. Ahmed; J. Albert; Sw. Banerjee; F. U. Bernlochner; H. H. F. Choi; G. J. King; R. Kowalewski; M. J. Lewczuk; I. M. Nugent; J. M. Roney; R. Sobie; N. Tasneem; T. J. Gershon; P. F. Harrison; T. Latham; E. M. T. Puccio; H. R. Band; S. Dasu; Y. Pan; R. Prepost; S. L. Wu

doi:10.1103/physrevd.86.032013

Precise measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>π</mml:mi><mml:mo mathvariant="bold">+</mml:mo></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo mathvariant="bold">−</mml:mo></mml:msup><mml:mo mathvariant="bold" stretchy="false">(</mml:mo><mml:mi>γ</mml:mi><mml:mo mathvariant="bold" stretchy="false">)</mml:mo></mml:math>cross section with the initial-state radiation method at<i>BABAR</i>

J. P. Lees(Centre National de la Recherche Scientifique), V. Poireau(Centre National de la Recherche Scientifique), V. Tisserand(Centre National de la Recherche Scientifique), J. Garra Ticó(Universitat de Barcelona), E. Graugés(Universitat de Barcelona), A. Palano(Istituto Nazionale di Fisica Nucleare, Sezione di Bari), G. Eigen(University of Bergen), B. Stugu(University of Bergen), D. N. Brown(Lawrence Berkeley National Laboratory), L. T. Kerth(Lawrence Berkeley National Laboratory), Yu. G. Kolomensky(Lawrence Berkeley National Laboratory), G. Lynch(Lawrence Berkeley National Laboratory), H. Koch(Ruhr University Bochum), T. Vazquez Schroeder(Ruhr University Bochum), D. J. Asgeirsson(University of British Columbia), C. Hearty(University of British Columbia), T. S. Mattison(University of British Columbia), J. A. McKenna(University of British Columbia), A. Khan(Brunel University of London), V. E. Blinov(Budker Institute of Nuclear Physics), А. Р. Бузыкаев(Budker Institute of Nuclear Physics), V. P. Druzhinin(Budker Institute of Nuclear Physics), V. B. Golubev(Budker Institute of Nuclear Physics), Э. А. Кравченко(Budker Institute of Nuclear Physics), A. P. Onuchin(Budker Institute of Nuclear Physics), S. I. Serednyakov(Budker Institute of Nuclear Physics), Yu. I. Skovpen(Budker Institute of Nuclear Physics), E. P. Solodov(Budker Institute of Nuclear Physics), K. Yu. Todyshev(Budker Institute of Nuclear Physics), A. N. Yushkov(Budker Institute of Nuclear Physics), M. Bondioli(University of California, Irvine), D. Kirkby(University of California, Irvine), A. J. Lankford(University of California, Irvine), M. Mandelkern(University of California, Irvine), H. Atmacan(University of California, Riverside), J. W. Gary(University of California, Riverside), F. Liu(University of California, Riverside), O. Long(University of California, Riverside), G. M. Vitug(University of California, Riverside), C. Campagnari(University of California, Santa Barbara), T. M. Hong(University of California, Santa Barbara), D. Kovalskyi(University of California, Santa Barbara), J. D. Richman(University of California, Santa Barbara), Christopher West(University of California, Santa Barbara), A. M. Eisner(University of California, Santa Cruz), J. Kroseberg(University of California, Santa Cruz), W. S. Lockman(University of California, Santa Cruz), A. J. Martínez(University of California, Santa Cruz), B. A. Schumm(University of California, Santa Cruz), A. Seiden(University of California, Santa Cruz), D. S. Chao(California Institute of Technology), C. H. Cheng(California Institute of Technology), B. Echenard(California Institute of Technology), K. T. Flood(California Institute of Technology), D. G. Hitlin(California Institute of Technology), P. Ongmongkolkul(California Institute of Technology), F. C. Porter(California Institute of Technology), A. Y. Rakitin(California Institute of Technology), R. Andreassen(University of Cincinnati), Z. Huard(University of Cincinnati), J. V. Mead(University of Cincinnati), M. D. Sokoloff(University of Cincinnati), L. Sun(University of Cincinnati), P. C. Bloom(University of Colorado Boulder), W. T. Ford(University of Colorado Boulder), A. Gaz(University of Colorado Boulder), U. Nauenberg(University of Colorado Boulder), J. Smith(University of Colorado Boulder), S. R. Wagner(University of Colorado Boulder), R. Ayad(Colorado State University), W. H. Toki(Colorado State University), B. Spaan(TU Dortmund University), K. R. Schubert(Technische Universität Dresden), R. Schwierz(Technische Universität Dresden), D. Bernard(Centre National de la Recherche Scientifique), M. Verderi(Centre National de la Recherche Scientifique), P. J. Clark(University of Edinburgh), S. Playfer(University of Edinburgh), D. Bettoni(Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara), C. Bozzi(Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara), R. Calabrese(University of Ferrara), G. Cibinetto(University of Ferrara), E. Fioravanti(University of Ferrara), I. Garzia(University of Ferrara), E. Luppi(University of Ferrara), M. Munerato(University of Ferrara), M. Negrini(University of Ferrara), L. Piemontese(Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara), V. Santoro(Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara), R. Baldini-Ferroli(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), A. Calcaterra(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), R. de Sangro(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), G. Finocchiaro(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), P. Patteri(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), I. M. Peruzzi(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), Marisa de Cássia Píccolo(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), M. Rama(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), A. Zallo(Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati), R. Contri(Istituto Nazionale di Fisica Nucleare, Sezione di Genova), E. Guido(Istituto Nazionale di Fisica Nucleare, Sezione di Genova), M. Lo Vetere(Istituto Nazionale di Fisica Nucleare, Sezione di Genova), M. R. Monge(Istituto Nazionale di Fisica Nucleare, Sezione di Genova), S. Passaggio(Istituto Nazionale di Fisica Nucleare, Sezione di Genova), C. Patrignani(Istituto Nazionale di Fisica Nucleare, Sezione di Genova), E. Robutti(Istituto Nazionale di Fisica Nucleare, Sezione di Genova), B. Bhuyan(Indian Institute of Technology Guwahati), V. Prasad(Indian Institute of Technology Guwahati), C. L. Lee(Harvard University Press), M. Morii(Harvard University Press), A. J. Edwards(Harvey Mudd College), A. Adametz(Heidelberg University), U. Uwer(Heidelberg University), H. M. Lacker(Humboldt-Universität zu Berlin), T. Lueck(Humboldt-Universität zu Berlin), P. D. Dauncey(Imperial College London), P. K. Behera(University of Iowa), U. Mallik(University of Iowa), C. Chen(Iowa State University), J. Cochran(Iowa State University), W. T. Meyer(Iowa State University), S. Prell(Iowa State University), A. E. Rubin(Iowa State University), A. V. Gritsan(Johns Hopkins University), Z. J. Guo(Johns Hopkins University), N. Arnaud(Université Paris-Sud), M. Davier(Université Paris-Sud), D. Derkach(Université Paris-Sud), G. Grosdidier(Université Paris-Sud), F. Le Diberder(Université Paris-Sud), A. M. Lutz(Université Paris-Sud), B. Malaescu(Université Paris-Sud), P. Roudeau(Université Paris-Sud), M. H. Schune(Université Paris-Sud), A. Stocchi(Université Paris-Sud), L. L. Wang(Université Paris-Sud), G. Wormser(Université Paris-Sud), D. J. Lange(Lawrence Livermore National Laboratory), D. Wright(Lawrence Livermore National Laboratory), C. A. Chavez(University of Liverpool), J. P. Coleman(University of Liverpool), J. R. Fry(University of Liverpool), E. Gabathuler(University of Liverpool), D. Hutchcroft(University of Liverpool), D. J. Payne(University of Liverpool), C. Touramanis(University of Liverpool), A. J. Bevan(Queen Mary University of London), F. Di Lodovico(Queen Mary University of London), R. Sacco(Queen Mary University of London), M. Sigamani(Queen Mary University of London), G. Cowan(Royal Holloway University of London), D. N. Brown(University of Louisville), C. L. Davis(University of Louisville), A. G. Denig(Johannes Gutenberg University Mainz), M. Fritsch(Johannes Gutenberg University Mainz), W. Gradl(Johannes Gutenberg University Mainz), K. Grießinger(Johannes Gutenberg University Mainz), A. Hafner(Johannes Gutenberg University Mainz), E. Prencipe(Johannes Gutenberg University Mainz), R. J. Barlow(University of Manchester), G. Jackson(University of Manchester), G. Lafferty(University of Manchester), E. Behn(University of Maryland, College Park), R. Cenci(University of Maryland, College Park), B. Hamilton(University of Maryland, College Park), A. Jawahery(University of Maryland, College Park), D. A. Roberts(University of Maryland, College Park), C. Dallapiccola(University of Massachusetts Amherst), R. Cowan(Massachusetts Institute of Technology), D. Dujmic(Massachusetts Institute of Technology), G. Sciolla(Massachusetts Institute of Technology), R. Cheaib(McGill University), D. Lindemann(McGill University), P. M. Patel(McGill University), S. H. Robertson(McGill University), P. Biassoni(University of Milan), N. Néri(Istituto Nazionale di Fisica Nucleare, Sezione di Milano), F. Palombo(University of Milan), S. Stracka(University of Milan), L. Cremaldi(University of Mississippi), R. Godang(University of Mississippi), R. Kroeger(University of Mississippi), P. Sonnek(University of Mississippi), D. J. Summers(University of Mississippi), X. Nguyen(Université de Montréal), M. Simard(Université de Montréal), P. Taras(Université de Montréal), G. De Nardo(Istituto Nazionale di Fisica Nucleare, Sezione di Napoli), D. Monorchio(Istituto Nazionale di Fisica Nucleare, Sezione di Napoli), G. Onorato(Istituto Nazionale di Fisica Nucleare, Sezione di Napoli), C. Sciacca(Istituto Nazionale di Fisica Nucleare, Sezione di Napoli), M. Martinelli(National Institute for Subatomic Physics), G. Raven(National Institute for Subatomic Physics), C. P. Jessop(University of Notre Dame), J. M. LoSecco(University of Notre Dame), W. F. Wang(University of Notre Dame), K. Honscheid(The Ohio State University), R. Kass(The Ohio State University), J. Brau(University of Oregon), R. Frey(University of Oregon), N. B. Sinev(University of Oregon), D. Strom(University of Oregon), E. Torrence(University of Oregon), E. Feltresi(University of Padua), N. Gagliardi(University of Padua), M. Margoni(University of Padua), M. Morandin(Istituto Nazionale di Fisica Nucleare, Sezione di Padova), M. Posocco(Istituto Nazionale di Fisica Nucleare, Sezione di Padova), M. Rotondo(Istituto Nazionale di Fisica Nucleare, Sezione di Padova), G. Simi(Istituto Nazionale di Fisica Nucleare, Sezione di Padova), F. Simonetto(University of Padua), R. Stroili(University of Padua), S. Akar(Centre National de la Recherche Scientifique), E. Ben-Haim(Centre National de la Recherche Scientifique), M. Bomben(Centre National de la Recherche Scientifique), G. R. Bonneaud(Centre National de la Recherche Scientifique), H. Briand(Centre National de la Recherche Scientifique), G. Calderini(Centre National de la Recherche Scientifique), Janic Chauveau(Centre National de la Recherche Scientifique), O. Hamon(Centre National de la Recherche Scientifique), Ph. Leruste(Centre National de la Recherche Scientifique), G. Marchiori(Centre National de la Recherche Scientifique), J. Ocariz(Centre National de la Recherche Scientifique), S. Sitt(Centre National de la Recherche Scientifique), M. Biasini(University of Perugia), E. Manoni(University of Perugia), S. Pacetti(University of Perugia), A. Rossi(University of Perugia), C. Angelini(University of Pisa), G. Batignani(University of Pisa), S. Bettarini(University of Pisa), M. Carpinelli(University of Pisa), G. Casarosa(University of Pisa), A. Cervelli(University of Pisa), F. Forti(University of Pisa), M. A. Giorgi(University of Pisa), A. Lusiani(Scuola Normale Superiore), B. Oberhof(University of Pisa), E. Paoloni(University of Pisa), A. Pérez(Istituto Nazionale di Fisica Nucleare, Sezione di Pisa), G. Rizzo(University of Pisa), J. Walsh(Istituto Nazionale di Fisica Nucleare, Sezione di Pisa), D. Lopes Pegna(Princeton University), J. Olsen(Princeton University), A. J. S. Smith(Princeton University), A. V. Telnov(Princeton University), F. Anulli(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), R. Faccini(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), F. Ferrarotto(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), F. Ferroni(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), M. Gaspero(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), L. Li Gioi(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), M. A. Mazzoni(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), G. Piredda(Istituto Nazionale di Fisica Nucleare, Sezione di Roma I), C. Bünger(University of Rostock), O. Grünberg(University of Rostock), T. Hartmann(University of Rostock), T. Leddig(University of Rostock), H. Schröder(University of Rostock), C. Voß(University of Rostock), R. Waldi(University of Rostock), T. Adye(Rutherford Appleton Laboratory), E. O. Olaiya(Rutherford Appleton Laboratory), F. F. Wilson(Rutherford Appleton Laboratory), S. Emery(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), G. Hamel de Monchenault(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), G. Vasseur(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), Ch. Yéche(Commissariat à l'Énergie Atomique et aux Énergies Alternatives), D. Aston(SLAC National Accelerator Laboratory), D. J. Bard(SLAC National Accelerator Laboratory), R. Bartoldus(SLAC National Accelerator Laboratory), J. F. Benitez(SLAC National Accelerator Laboratory), C. Cartaro(SLAC National Accelerator Laboratory), M. R. Convery(SLAC National Accelerator Laboratory), J. Dorfan(SLAC National Accelerator Laboratory), G. P. Dubois-Felsmann(SLAC National Accelerator Laboratory), W. Dunwoodie(SLAC National Accelerator Laboratory), M. Ebert(SLAC National Accelerator Laboratory), R. C. Field(SLAC National Accelerator Laboratory), M. Franco Sevilla(SLAC National Accelerator Laboratory), B. G. Fulsom(SLAC National Accelerator Laboratory), A. M. Gabareen(SLAC National Accelerator Laboratory), M. T. Graham(SLAC National Accelerator Laboratory), P. Grenier(SLAC National Accelerator Laboratory), C. Hast(SLAC National Accelerator Laboratory), W. R. Innes(SLAC National Accelerator Laboratory), M. H. Kelsey(SLAC National Accelerator Laboratory), P. Kim(SLAC National Accelerator Laboratory), M. L. Kocian(SLAC National Accelerator Laboratory), D. W. G. S. Leith(SLAC National Accelerator Laboratory), P. Lewis(SLAC National Accelerator Laboratory), B. Lindquist(SLAC National Accelerator Laboratory), S. Luitz(SLAC National Accelerator Laboratory), V. Lüth(SLAC National Accelerator Laboratory), H. L. Lynch(SLAC National Accelerator Laboratory), D. B. MacFarlane(SLAC National Accelerator Laboratory), D. R. Müller(SLAC National Accelerator Laboratory), H. A. Neal(SLAC National Accelerator Laboratory), S. Nelson(SLAC National Accelerator Laboratory), M. Perl(SLAC National Accelerator Laboratory), T. Pulliam(SLAC National Accelerator Laboratory), B. N. Ratcliff(SLAC National Accelerator Laboratory), A. Roodman(SLAC National Accelerator Laboratory), A. A. Salnikov(SLAC National Accelerator Laboratory), R. H. Schindler(SLAC National Accelerator Laboratory), A. Snyder(SLAC National Accelerator Laboratory), D. Su(SLAC National Accelerator Laboratory), M. K. Sullivan(SLAC National Accelerator Laboratory), J. Va’vra(SLAC National Accelerator Laboratory), A. P. Wagner(SLAC National Accelerator Laboratory), W. J. Wisniewski(SLAC National Accelerator Laboratory), M. Wittgen(SLAC National Accelerator Laboratory), D. H. Wright(SLAC National Accelerator Laboratory), H. W. Wulsin(SLAC National Accelerator Laboratory), C. C. Young(SLAC National Accelerator Laboratory), V. Ziegler(SLAC National Accelerator Laboratory), W. Park(University of South Carolina), M. V. Purohit(University of South Carolina), R. M. White(University of South Carolina), R. J. Wilson(University of South Carolina), A. Randle-Conde(Southern Methodist University), S. J. Sekula(Southern Methodist University), M. Bellis(Stanford University), P. R. Burchat(Stanford University), T. S. Miyashita(Stanford University), M. S. Alam(Albany State University), J. Ernst(Albany State University), R. Gorodeisky(Tel Aviv University), N. Guttman(Tel Aviv University), D. R. Peimer(Tel Aviv University), A. Soffer(Tel Aviv University), P. Lund(University of Tennessee at Knoxville), S. Spanier(University of Tennessee at Knoxville), J. L. Ritchie(The University of Texas at Austin), A. M. Ruland(The University of Texas at Austin), R. F. Schwitters(The University of Texas at Austin), B. C. Wray(The University of Texas at Austin), J. M. Izen(The University of Texas at Dallas), X. C. Lou(The University of Texas at Dallas), F. Bianchi(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), D. Gamba(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), L. Lanceri(University of Trieste), L. Vitale(University of Trieste), F. Martínez-Vidal(Universitat de València), A. Oyanguren(Universitat de València), H. Ahmed(University of Victoria), J. Albert(University of Victoria), Sw. Banerjee(University of Victoria), F. U. Bernlochner(University of Victoria), H. H. F. Choi(University of Victoria), G. J. King(University of Victoria), R. Kowalewski(University of Victoria), M. J. Lewczuk(University of Victoria), I. M. Nugent(University of Victoria), J. M. Roney(University of Victoria), R. Sobie(University of Victoria), N. Tasneem(University of Victoria), T. J. Gershon(University of Warwick), P. F. Harrison(University of Warwick), T. Latham(University of Warwick), E. M. T. Puccio(University of Warwick), H. R. Band(University of Wisconsin–Madison), S. Dasu(University of Wisconsin–Madison), Y. Pan(University of Wisconsin–Madison), R. Prepost(University of Wisconsin–Madison), S. L. Wu(University of Wisconsin–Madison)

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology

August 28, 2012

10.1103/physrevd.86.032013

Cited by 237Open Access

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Abstract

A precise measurement of the cross section of the process e^+e^-→π^+π^-(γ) from threshold to an energy of 3 GeV is obtained with the initial-state radiation (ISR) method using 232 fb^(-1) of data collected with the BABAR detector at e^+e^- center-of-mass energies near 10.6 GeV. The ISR luminosity is determined from a study of the leptonic process e^+e^-→μ^+μ^-(γ)γ_(ISR), which is found to agree with the next-to-leading-order QED prediction to within 1.1%. The cross section for the process e^+e^-→π^+π^-(γ) is obtained with a systematic uncertainty of 0.5% in the dominant ρ resonance region. The leading-order hadronic contribution to the muon magnetic anomaly calculated using the measured ππ cross section from threshold to 1.8 GeV is (514.1±2.2(stat)±3.1(syst))×10^(-10).

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