Measurement of additional radiation in the initial-state-radiation processes e+e- →μ+μ-γ and e+e- →π+π-γ at BABAR

J. P. Lees; V. Poireau; V. Tisserand; E. Grauges; A. Palano; G. Eigen; D. N. Brown; Yu G. Kolomensky; M. Fritsch; H. Koch; R. Cheaib; C. Hearty; T. S. Mattison; J. A. McKenna; R. Y. So; V. E. Blinov; A. R. Buzykaev; V. P. Druzhinin; E. A. Kozyrev; E. A. Kravchenko; S. I. Serednyakov; Yu I. Skovpen; E. P. Solodov; K. Yu Todyshev; A. J. Lankford; B. Dey; J. W. Gary; O. Long; A. M. Eisner; W. S. Lockman; W. Panduro Vazquez; D. S. Chao; C. H. Cheng; B. Echenard; K. T. Flood; D. G. Hitlin; Y. Li; D. X. Lin; S. Middleton; T. S. Miyashita; P. Ongmongkolkul; J. Oyang; F. C. Porter; M. Röhrken; B. T. Meadows; M. D. Sokoloff; J. G. Smith; S. R. Wagner; D. Bernard; M. Verderi; D. Bettoni; C. Bozzi; R. Calabrese; G. Cibinetto; E. Fioravanti; I. Garzia; E. Luppi; V. Santoro; A. Calcaterra; R. De Sangro; G. Finocchiaro; S. Martellotti; P. Patteri; I. M. Peruzzi; M. Piccolo; M. Rotondo; A. Zallo; S. Passaggio; C. Patrignani; B. J. Shuve; H. M. Lacker; B. Bhuyan; U. Mallik; C. Chen; J. Cochran; S. Prell; A. V. Gritsan; N. Arnaud; D. Bai; M. Davier; F. Le Diberder; L. Li; A. M. Lutz; G. Wormser; Z. Zhang; D. J. Lange; D. M. Wright; J. P. Coleman; D. E. Hutchcroft; D. J. Payne; C. Touramanis; A. J. Bevan; F. Di Lodovico; G. Cowan; Sw Banerjee; D. N. Brown; C. L. Davis; A. G. Denig; W. Gradl; K. Griessinger; A. Hafner; K. R. Schubert; R. J. Barlow; G. D. Lafferty; R. Cenci; A. Jawahery; D. A. Roberts; R. Cowan; S. H. Robertson; R. M. Seddon; N. Neri; F. Palombo; L. Cremaldi; R. Godang; D. J. Summers; G. De Nardo; C. Sciacca; C. P. Jessop; J. M. Losecco; K. Honscheid; A. Gaz; M. Margoni; G. Simi; F. Simonetto; R. Stroili; S. Akar; E. Ben-Haim; M. Bomben; G. R. Bonneaud; G. Calderini; J. Chauveau; B. Malaescu; G. Marchiori; J. Ocariz; M. Biasini; E. Manoni; A. Rossi; G. Batignani; S. Bettarini; M. Carpinelli; G. Casarosa; M. Chrzaszcz; F. Forti; M. A. Giorgi; A. Lusiani; B. Oberhof; E. Paoloni; M. Rama; G. Rizzo; J. J. Walsh; L. Zani; A. J.S. Smith; F. Anulli; R. Faccini; F. Ferrarotto; F. Ferroni; A. Pilloni; C. Bünger; S. Dittrich; O. Grünberg; T. Leddig; C. Voß; R. Waldi; T. Adye; F. F. Wilson; S. Emery; G. Vasseur; D. Aston; C. Cartaro; M. R. Convery; W. Dunwoodie; M. Ebert; R. C. Field; B. G. Fulsom; M. T. Graham; C. Hast; P. Kim; S. Luitz; D. B. Macfarlane; D. R. Muller; H. Neal; B. N. Ratcliff; A. Roodman; M. K. Sullivan; J. Va'Vra; W. J. Wisniewski; M. V. Purohit; J. R. Wilson; S. J. Sekula; H. Ahmed; N. Tasneem; M. Bellis; P. R. Burchat; E. M.T. Puccio; J. A. Ernst; R. Gorodeisky; N. Guttman; D. R. Peimer; A. Soffer; S. M. Spanier; J. L. Ritchie; J. M. Izen; X. C. Lou; F. Bianchi; F. De Mori; A. Filippi; L. Lanceri; L. Vitale; F. Martinez-Vidal; A. Oyanguren; J. Albert; A. Beaulieu; F. U. Bernlochner; G. J. King; R. Kowalewski; T. Lueck; C. Miller; I. M. Nugent; J. M. Roney; R. J. Sobie; T. J. Gershon; P. F. Harrison; T. E. Latham; S. L. Wu

doi:10.1103/PhysRevD.108.L111103

Measurement of additional radiation in the initial-state-radiation processes e+e- →μ+μ-γ and e+e- →π+π-γ at BABAR

J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu G. Kolomensky, M. Fritsch, H. Koch, R. Cheaib, C. Hearty, T. S. Mattison, J. A. McKenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, E. A. Kozyrev, E. A. KravchenkoS. I. Serednyakov, Yu I. Skovpen, E. P. Solodov, K. Yu Todyshev, A. J. Lankford, B. Dey, J. W. Gary, O. Long, A. M. Eisner, W. S. Lockman, W. Panduro Vazquez, D. S. Chao, C. H. Cheng, B. Echenard, K. T. Flood, D. G. Hitlin, Y. Li, D. X. Lin, S. Middleton, T. S. Miyashita, P. Ongmongkolkul, J. Oyang, F. C. Porter, M. Röhrken, B. T. Meadows, M. D. Sokoloff, J. G. Smith, S. R. Wagner, D. Bernard, M. Verderi, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, V. Santoro, A. Calcaterra, R. De Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I. M. Peruzzi, M. Piccolo, M. Rotondo, A. Zallo, S. Passaggio, C. Patrignani, B. J. Shuve, H. M. Lacker, B. Bhuyan, U. Mallik, C. Chen, J. Cochran, S. Prell, A. V. Gritsan, N. Arnaud, D. Bai, M. Davier, F. Le Diberder, L. Li, A. M. Lutz, G. Wormser, Z. Zhang, D. J. Lange, D. M. Wright, J. P. Coleman, D. E. Hutchcroft, D. J. Payne, C. Touramanis, A. J. Bevan, F. Di Lodovico, G. Cowan, Sw Banerjee, D. N. Brown, C. L. Davis, A. G. Denig, W. Gradl, K. Griessinger, A. Hafner, K. R. Schubert, R. J. Barlow, G. D. Lafferty, R. Cenci, A. Jawahery, D. A. Roberts, R. Cowan, S. H. Robertson, R. M. Seddon, N. Neri, F. Palombo, L. Cremaldi, R. Godang, D. J. Summers, G. De Nardo, C. Sciacca, C. P. Jessop, J. M. Losecco, K. Honscheid, A. Gaz, M. Margoni, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. R. Bonneaud, G. Calderini, J. Chauveau, B. Malaescu, G. Marchiori, J. Ocariz, M. Biasini, E. Manoni, A. Rossi, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, M. Chrzaszcz, F. Forti, M. A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, M. Rama, G. Rizzo, J. J. Walsh, L. Zani, A. J.S. Smith, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, A. Pilloni, C. Bünger, S. Dittrich, O. Grünberg, T. Leddig, C. Voß, R. Waldi, T. Adye, F. F. Wilson, S. Emery, G. Vasseur, D. Aston, C. Cartaro, M. R. Convery, W. Dunwoodie, M. Ebert, R. C. Field, B. G. Fulsom, M. T. Graham, C. Hast, P. Kim, S. Luitz, D. B. Macfarlane, D. R. Muller, H. Neal, B. N. Ratcliff, A. Roodman, M. K. Sullivan, J. Va'Vra, W. J. Wisniewski, M. V. Purohit, J. R. Wilson, S. J. Sekula, H. Ahmed, N. Tasneem, M. Bellis, P. R. Burchat, E. M.T. Puccio, J. A. Ernst, R. Gorodeisky, N. Guttman, D. R. Peimer, A. Soffer, S. M. Spanier, J. L. Ritchie, J. M. Izen, X. C. Lou, F. Bianchi, F. De Mori, A. Filippi, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, J. Albert, A. Beaulieu, F. U. Bernlochner, G. J. King, R. Kowalewski, T. Lueck, C. Miller, I. M. Nugent, J. M. Roney, R. J. Sobie, T. J. Gershon, P. F. Harrison, T. E. Latham, S. L. Wu

School of Physics and Astronomy

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

Abstract

A dedicated measurement of additional radiation in e+e-→μ+μ-γ and e+e-→π+π-γ initial-state-radiation events is presented using the full BABAR data sample. For the first time results are presented at next-to- and next-to-next-to-leading order, with one and two additional photons, respectively, for radiation from the initial and final states. Comparison with predictions from phokhara and afkqed Monte Carlo generators is performed, revealing discrepancies in the one-photon rates and angular distributions for the former. This disagreement has a negligible effect on the BABAR measurement of the e+e-→π+π-(γ) cross section, but could affect other measurements significantly. This study sheds a new light on the longstanding discrepancy in this channel that affects the theoretical prediction of hadronic vacuum polarization contributions to the muon magnetic moment anomaly.

Original language	English
Article number	L111103
Journal	Physical Review D
Volume	108
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.108.L111103
State	Published - 1 Dec 2023

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.108.L111103

Cite this

Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Y. G., Fritsch, M., Koch, H., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Kozyrev, E. A., ... Wu, S. L. (2023). Measurement of additional radiation in the initial-state-radiation processes e+e- →μ+μ-γ and e+e- →π+π-γ at BABAR. Physical Review D, 108(11), Article L111103. https://doi.org/10.1103/PhysRevD.108.L111103

@article{60b23aefb2804e9b98effe4a62517de2,

title = "Measurement of additional radiation in the initial-state-radiation processes e+e- →μ+μ-γ and e+e- →π+π-γ at BABAR",

abstract = "A dedicated measurement of additional radiation in e+e-→μ+μ-γ and e+e-→π+π-γ initial-state-radiation events is presented using the full BABAR data sample. For the first time results are presented at next-to- and next-to-next-to-leading order, with one and two additional photons, respectively, for radiation from the initial and final states. Comparison with predictions from phokhara and afkqed Monte Carlo generators is performed, revealing discrepancies in the one-photon rates and angular distributions for the former. This disagreement has a negligible effect on the BABAR measurement of the e+e-→π+π-(γ) cross section, but could affect other measurements significantly. This study sheds a new light on the longstanding discrepancy in this channel that affects the theoretical prediction of hadronic vacuum polarization contributions to the muon magnetic moment anomaly.",

author = "Lees, {J. P.} and V. Poireau and V. Tisserand and E. Grauges and A. Palano and G. Eigen and Brown, {D. N.} and Kolomensky, {Yu G.} and M. Fritsch and H. Koch and R. Cheaib and C. Hearty and Mattison, {T. S.} and McKenna, {J. A.} and So, {R. Y.} and Blinov, {V. E.} and Buzykaev, {A. R.} and Druzhinin, {V. P.} and Kozyrev, {E. A.} and Kravchenko, {E. A.} and Serednyakov, {S. I.} and Skovpen, {Yu I.} and Solodov, {E. P.} and Todyshev, {K. Yu} and Lankford, {A. J.} and B. Dey and Gary, {J. W.} and O. Long and Eisner, {A. M.} and Lockman, {W. S.} and {Panduro Vazquez}, W. and Chao, {D. S.} and Cheng, {C. H.} and B. Echenard and Flood, {K. T.} and Hitlin, {D. G.} and Y. Li and Lin, {D. X.} and S. Middleton and Miyashita, {T. S.} and P. Ongmongkolkul and J. Oyang and Porter, {F. C.} and M. R{\"o}hrken and Meadows, {B. T.} and Sokoloff, {M. D.} and Smith, {J. G.} and Wagner, {S. R.} and D. Bernard and M. Verderi and D. Bettoni and C. Bozzi and R. Calabrese and G. Cibinetto and E. Fioravanti and I. Garzia and E. Luppi and V. Santoro and A. Calcaterra and {De Sangro}, R. and G. Finocchiaro and S. Martellotti and P. Patteri and Peruzzi, {I. M.} and M. Piccolo and M. Rotondo and A. Zallo and S. Passaggio and C. Patrignani and Shuve, {B. J.} and Lacker, {H. M.} and B. Bhuyan and U. Mallik and C. Chen and J. Cochran and S. Prell and Gritsan, {A. V.} and N. Arnaud and D. Bai and M. Davier and {Le Diberder}, F. and L. Li and Lutz, {A. M.} and G. Wormser and Z. Zhang and Lange, {D. J.} and Wright, {D. M.} and Coleman, {J. P.} and Hutchcroft, {D. E.} and Payne, {D. J.} and C. Touramanis and Bevan, {A. J.} and {Di Lodovico}, F. and G. Cowan and Sw Banerjee and Brown, {D. N.} and Davis, {C. L.} and Denig, {A. G.} and W. Gradl and K. Griessinger and A. Hafner and Schubert, {K. R.} and Barlow, {R. J.} and Lafferty, {G. D.} and R. Cenci and A. Jawahery and Roberts, {D. A.} and R. Cowan and Robertson, {S. H.} and Seddon, {R. M.} and N. Neri and F. Palombo and L. Cremaldi and R. Godang and Summers, {D. J.} and {De Nardo}, G. and C. Sciacca and Jessop, {C. P.} and Losecco, {J. M.} and K. Honscheid and A. Gaz and M. Margoni and G. Simi and F. Simonetto and R. Stroili and S. Akar and E. Ben-Haim and M. Bomben and Bonneaud, {G. R.} and G. Calderini and J. Chauveau and B. Malaescu and G. Marchiori and J. Ocariz and M. Biasini and E. Manoni and A. Rossi and G. Batignani and S. Bettarini and M. Carpinelli and G. Casarosa and M. Chrzaszcz and F. Forti and Giorgi, {M. A.} and A. Lusiani and B. Oberhof and E. Paoloni and M. Rama and G. Rizzo and Walsh, {J. J.} and L. Zani and Smith, {A. J.S.} and F. Anulli and R. Faccini and F. Ferrarotto and F. Ferroni and A. Pilloni and C. B{\"u}nger and S. Dittrich and O. Gr{\"u}nberg and T. Leddig and C. Vo{\ss} and R. Waldi and T. Adye and Wilson, {F. F.} and S. Emery and G. Vasseur and D. Aston and C. Cartaro and Convery, {M. R.} and W. Dunwoodie and M. Ebert and Field, {R. C.} and Fulsom, {B. G.} and Graham, {M. T.} and C. Hast and P. Kim and S. Luitz and Macfarlane, {D. B.} and Muller, {D. R.} and H. Neal and Ratcliff, {B. N.} and A. Roodman and Sullivan, {M. K.} and J. Va'Vra and Wisniewski, {W. J.} and Purohit, {M. V.} and Wilson, {J. R.} and Sekula, {S. J.} and H. Ahmed and N. Tasneem and M. Bellis and Burchat, {P. R.} and Puccio, {E. M.T.} and Ernst, {J. A.} and R. Gorodeisky and N. Guttman and Peimer, {D. R.} and A. Soffer and Spanier, {S. M.} and Ritchie, {J. L.} and Izen, {J. M.} and Lou, {X. C.} and F. Bianchi and {De Mori}, F. and A. Filippi and L. Lanceri and L. Vitale and F. Martinez-Vidal and A. Oyanguren and J. Albert and A. Beaulieu and Bernlochner, {F. U.} and King, {G. J.} and R. Kowalewski and T. Lueck and C. Miller and Nugent, {I. M.} and Roney, {J. M.} and Sobie, {R. J.} and Gershon, {T. J.} and Harrison, {P. F.} and Latham, {T. E.} and Wu, {S. L.}",

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2023",

month = dec,

day = "1",

doi = "10.1103/PhysRevD.108.L111103",

language = "الإنجليزيّة",

volume = "108",

number = "11",

}

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Fritsch, M, Koch, H, Cheaib, R, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Kozyrev, EA, Kravchenko, EA, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Dey, B, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Li, Y, Lin, DX, Middleton, S, Miyashita, TS, Ongmongkolkul, P, Oyang, J, Porter, FC, Röhrken, M, Meadows, BT, Sokoloff, MD, Smith, JG, Wagner, SR, Bernard, D, Verderi, M, Bettoni, D, Bozzi, C, Calabrese, R, Cibinetto, G, Fioravanti, E, Garzia, I, Luppi, E, Santoro, V, Calcaterra, A, De Sangro, R, Finocchiaro, G, Martellotti, S, Patteri, P, Peruzzi, IM, Piccolo, M, Rotondo, M, Zallo, A, Passaggio, S, Patrignani, C, Shuve, BJ, Lacker, HM, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Gritsan, AV, Arnaud, N, Bai, D, Davier, M, Le Diberder, F, Li, L, Lutz, AM, Wormser, G, Zhang, Z, Lange, DJ, Wright, DM, Coleman, JP, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Cowan, G, Banerjee, S, Brown, DN, Davis, CL, Denig, AG, Gradl, W, Griessinger, K, Hafner, A, Schubert, KR, Barlow, RJ, Lafferty, GD, Cenci, R, Jawahery, A, Roberts, DA, Cowan, R, Robertson, SH, Seddon, RM, Neri, N, Palombo, F, Cremaldi, L, Godang, R, Summers, DJ, De Nardo, G, Sciacca, C, Jessop, CP, Losecco, JM, Honscheid, K, Gaz, A, Margoni, M, Simi, G, Simonetto, F, Stroili, R, Akar, S, Ben-Haim, E, Bomben, M, Bonneaud, GR, Calderini, G, Chauveau, J, Malaescu, B, Marchiori, G, Ocariz, J, Biasini, M, Manoni, E, Rossi, A, Batignani, G, Bettarini, S, Carpinelli, M, Casarosa, G, Chrzaszcz, M, Forti, F, Giorgi, MA, Lusiani, A, Oberhof, B, Paoloni, E, Rama, M, Rizzo, G, Walsh, JJ, Zani, L, Smith, AJS, Anulli, F, Faccini, R, Ferrarotto, F, Ferroni, F, Pilloni, A, Bünger, C, Dittrich, S, Grünberg, O, Leddig, T, Voß, C, Waldi, R, Adye, T, Wilson, FF, Emery, S, Vasseur, G, Aston, D, Cartaro, C, Convery, MR, Dunwoodie, W, Ebert, M, Field, RC, Fulsom, BG, Graham, MT, Hast, C, Kim, P, Luitz, S, Macfarlane, DB, Muller, DR, Neal, H, Ratcliff, BN, Roodman, A, Sullivan, MK, Va'Vra, J, Wisniewski, WJ, Purohit, MV, Wilson, JR, Sekula, SJ, Ahmed, H, Tasneem, N, Bellis, M, Burchat, PR, Puccio, EMT, Ernst, JA, Gorodeisky, R, Guttman, N, Peimer, DR, Soffer, A, Spanier, SM, Ritchie, JL, Izen, JM, Lou, XC, Bianchi, F, De Mori, F, Filippi, A, Lanceri, L, Vitale, L, Martinez-Vidal, F, Oyanguren, A, Albert, J, Beaulieu, A, Bernlochner, FU, King, GJ, Kowalewski, R, Lueck, T, Miller, C, Nugent, IM, Roney, JM, Sobie, RJ, Gershon, TJ, Harrison, PF, Latham, TE & Wu, SL 2023, 'Measurement of additional radiation in the initial-state-radiation processes e+e- →μ+μ-γ and e+e- →π+π-γ at BABAR', Physical Review D, vol. 108, no. 11, L111103. https://doi.org/10.1103/PhysRevD.108.L111103

TY - JOUR

T1 - Measurement of additional radiation in the initial-state-radiation processes e+e- →μ+μ-γ and e+e- →π+π-γ at BABAR

AU - Lees, J. P.

AU - Poireau, V.

AU - Tisserand, V.

AU - Grauges, E.

AU - Palano, A.

AU - Eigen, G.

AU - Brown, D. N.

AU - Kolomensky, Yu G.

AU - Fritsch, M.

AU - Koch, H.

AU - Cheaib, R.

AU - Hearty, C.

AU - Mattison, T. S.

AU - McKenna, J. A.

AU - So, R. Y.

AU - Blinov, V. E.

AU - Buzykaev, A. R.

AU - Druzhinin, V. P.

AU - Kozyrev, E. A.

AU - Kravchenko, E. A.

AU - Serednyakov, S. I.

AU - Skovpen, Yu I.

AU - Solodov, E. P.

AU - Todyshev, K. Yu

AU - Lankford, A. J.

AU - Dey, B.

AU - Gary, J. W.

AU - Long, O.

AU - Eisner, A. M.

AU - Lockman, W. S.

AU - Panduro Vazquez, W.

AU - Chao, D. S.

AU - Cheng, C. H.

AU - Echenard, B.

AU - Flood, K. T.

AU - Hitlin, D. G.

AU - Li, Y.

AU - Lin, D. X.

AU - Middleton, S.

AU - Miyashita, T. S.

AU - Ongmongkolkul, P.

AU - Oyang, J.

AU - Porter, F. C.

AU - Röhrken, M.

AU - Meadows, B. T.

AU - Sokoloff, M. D.

AU - Smith, J. G.

AU - Wagner, S. R.

AU - Bernard, D.

AU - Verderi, M.

AU - Bettoni, D.

AU - Bozzi, C.

AU - Calabrese, R.

AU - Cibinetto, G.

AU - Fioravanti, E.

AU - Garzia, I.

AU - Luppi, E.

AU - Santoro, V.

AU - Calcaterra, A.

AU - De Sangro, R.

AU - Finocchiaro, G.

AU - Martellotti, S.

AU - Patteri, P.

AU - Peruzzi, I. M.

AU - Piccolo, M.

AU - Rotondo, M.

AU - Zallo, A.

AU - Passaggio, S.

AU - Patrignani, C.

AU - Shuve, B. J.

AU - Lacker, H. M.

AU - Bhuyan, B.

AU - Mallik, U.

AU - Chen, C.

AU - Cochran, J.

AU - Prell, S.

AU - Gritsan, A. V.

AU - Arnaud, N.

AU - Bai, D.

AU - Davier, M.

AU - Le Diberder, F.

AU - Li, L.

AU - Lutz, A. M.

AU - Wormser, G.

AU - Zhang, Z.

AU - Lange, D. J.

AU - Wright, D. M.

AU - Coleman, J. P.

AU - Hutchcroft, D. E.

AU - Payne, D. J.

AU - Touramanis, C.

AU - Bevan, A. J.

AU - Di Lodovico, F.

AU - Cowan, G.

AU - Banerjee, Sw

AU - Brown, D. N.

AU - Davis, C. L.

AU - Denig, A. G.

AU - Gradl, W.

AU - Griessinger, K.

AU - Hafner, A.

AU - Schubert, K. R.

AU - Barlow, R. J.

AU - Lafferty, G. D.

AU - Cenci, R.

AU - Jawahery, A.

AU - Roberts, D. A.

AU - Cowan, R.

AU - Robertson, S. H.

AU - Seddon, R. M.

AU - Neri, N.

AU - Palombo, F.

AU - Cremaldi, L.

AU - Godang, R.

AU - Summers, D. J.

AU - De Nardo, G.

AU - Sciacca, C.

AU - Jessop, C. P.

AU - Losecco, J. M.

AU - Honscheid, K.

AU - Gaz, A.

AU - Margoni, M.

AU - Simi, G.

AU - Simonetto, F.

AU - Stroili, R.

AU - Akar, S.

AU - Ben-Haim, E.

AU - Bomben, M.

AU - Bonneaud, G. R.

AU - Calderini, G.

AU - Chauveau, J.

AU - Malaescu, B.

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N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2023/12/1

Y1 - 2023/12/1

N2 - A dedicated measurement of additional radiation in e+e-→μ+μ-γ and e+e-→π+π-γ initial-state-radiation events is presented using the full BABAR data sample. For the first time results are presented at next-to- and next-to-next-to-leading order, with one and two additional photons, respectively, for radiation from the initial and final states. Comparison with predictions from phokhara and afkqed Monte Carlo generators is performed, revealing discrepancies in the one-photon rates and angular distributions for the former. This disagreement has a negligible effect on the BABAR measurement of the e+e-→π+π-(γ) cross section, but could affect other measurements significantly. This study sheds a new light on the longstanding discrepancy in this channel that affects the theoretical prediction of hadronic vacuum polarization contributions to the muon magnetic moment anomaly.

AB - A dedicated measurement of additional radiation in e+e-→μ+μ-γ and e+e-→π+π-γ initial-state-radiation events is presented using the full BABAR data sample. For the first time results are presented at next-to- and next-to-next-to-leading order, with one and two additional photons, respectively, for radiation from the initial and final states. Comparison with predictions from phokhara and afkqed Monte Carlo generators is performed, revealing discrepancies in the one-photon rates and angular distributions for the former. This disagreement has a negligible effect on the BABAR measurement of the e+e-→π+π-(γ) cross section, but could affect other measurements significantly. This study sheds a new light on the longstanding discrepancy in this channel that affects the theoretical prediction of hadronic vacuum polarization contributions to the muon magnetic moment anomaly.

UR - http://www.scopus.com/inward/record.url?scp=85182172613&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.108.L111103

DO - 10.1103/PhysRevD.108.L111103

M3 - مقالة

SN - 2470-0010

VL - 108

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - L111103

ER -

Measurement of additional radiation in the initial-state-radiation processes e+e- →μ+μ-γ and e+e- →π+π-γ at BABAR

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