Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions

J. P. Lees; V. Poireau; V. Tisserand; E. Grauges; A. Palano; G. Eigen; D. N. Brown; Yu G. Kolomensky; H. Koch; T. Schroeder; C. Hearty; T. S. Mattison; J. A. McKenna; R. Y. So; V. E. Blinov; A. R. Buzykaev; V. P. Druzhinin; V. B. Golubev; E. A. Kravchenko; A. P. Onuchin; S. I. Serednyakov; Yu I. Skovpen; E. P. Solodov; K. Yu Todyshev; A. J. Lankford; 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; J. Kim; T. S. Miyashita; P. Ongmongkolkul; F. C. Porter; M. Röhrken; Z. Huard; B. T. Meadows; B. G. Pushpawela; M. D. Sokoloff; L. Sun; 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; A. Zallo; S. Passaggio; C. Patrignani; B. Bhuyan; U. Mallik; C. Chen; J. Cochran; S. Prell; H. Ahmed; M. R. Pennington; A. V. Gritsan; N. Arnaud; M. Davier; F. Le Diberder; A. M. Lutz; G. Wormser; D. J. Lange; D. M. Wright; J. P. Coleman; E. Gabathuler; D. E. Hutchcroft; D. J. Payne; C. Touramanis; A. J. Bevan; F. Di Lodovico; R. Sacco; G. Cowan; Sw Banerjee; D. N. Brown; C. L. Davis; A. G. Denig; M. Fritsch; W. Gradl; K. Griessinger; A. Hafner; K. R. Schubert; R. J. Barlow; G. D. Lafferty; R. Cenci; A. Jawahery; D. A. Roberts; R. Cowan; R. Cheaib; S. H. Robertson; B. Dey; N. Neri; F. Palombo; L. Cremaldi; R. Godang; D. J. Summers; P. Taras; G. De Nardo; C. Sciacca; G. Raven; C. P. Jessop; J. M. Losecco; K. Honscheid; R. Kass; A. Gaz; M. Margoni; M. Posocco; M. Rotondo; G. Simi; F. Simonetto; R. Stroili; S. Akar; E. Ben-Haim; M. Bomben; G. R. Bonneaud; G. Calderini; J. Chauveau; 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; A. J.S. Smith; F. Anulli; R. Faccini; F. Ferrarotto; F. Ferroni; A. Pilloni; G. Piredda; C. Bünger; S. Dittrich; O. Grünberg; M. Heß; T. Leddig; C. Voß; R. Waldi; T. Adye; F. F. Wilson; S. Emery; G. Hamel De Monchenault; G. Vasseur; D. Aston; C. Cartaro; M. R. Convery; J. Dorfan; W. Dunwoodie; M. Ebert; R. C. Field; B. G. Fulsom; M. T. Graham; C. Hast; W. R. Innes; P. Kim; D. W.G.S. Leith; S. Luitz; V. Luth; 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; A. Randle-Conde; S. J. Sekula; M. Bellis; P. R. Burchat; E. M.T. Puccio; M. S. Alam; J. A. Ernst; R. Gorodeisky; N. Guttman; D. R. Peimer; A. Soffer; S. M. Spanier; J. L. Ritchie; R. F. Schwitters; J. M. Izen; X. C. Lou; F. Bianchi; F. De Mori; A. Filippi; D. Gamba; L. Lanceri; L. Vitale; F. Martinez-Vidal; A. Oyanguren; J. Albert; A. Beaulieu; F. U. Bernlochner; G. J. King; R. Kowalewski; T. Lueck; I. M. Nugent; J. M. Roney; N. Tasneem; T. J. Gershon; P. F. Harrison; T. E. Latham; R. Prepost; S. L. Wu

doi:10.1103/PhysRevD.93.012005

Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions

J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu G. Kolomensky, H. Koch, T. Schroeder, C. Hearty, T. S. Mattison, J. A. McKenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, E. A. Kravchenko, A. P. OnuchinS. I. Serednyakov, Yu I. Skovpen, E. P. Solodov, K. Yu Todyshev, A. J. Lankford, 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, J. Kim, T. S. Miyashita, P. Ongmongkolkul, F. C. Porter, M. Röhrken, Z. Huard, B. T. Meadows, B. G. Pushpawela, M. D. Sokoloff, L. Sun, 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, A. Zallo, S. Passaggio, C. Patrignani, B. Bhuyan, U. Mallik, C. Chen, J. Cochran, S. Prell, H. Ahmed, M. R. Pennington, A. V. Gritsan, N. Arnaud, M. Davier, F. Le Diberder, A. M. Lutz, G. Wormser, D. J. Lange, D. M. Wright, J. P. Coleman, E. Gabathuler, D. E. Hutchcroft, D. J. Payne, C. Touramanis, A. J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, Sw Banerjee, D. N. Brown, C. L. Davis, A. G. Denig, M. Fritsch, W. Gradl, K. Griessinger, A. Hafner, K. R. Schubert, R. J. Barlow, G. D. Lafferty, R. Cenci, A. Jawahery, D. A. Roberts, R. Cowan, R. Cheaib, S. H. Robertson, B. Dey, N. Neri, F. Palombo, L. Cremaldi, R. Godang, D. J. Summers, P. Taras, G. De Nardo, C. Sciacca, G. Raven, C. P. Jessop, J. M. Losecco, K. Honscheid, R. Kass, A. Gaz, M. Margoni, M. Posocco, M. Rotondo, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G. R. Bonneaud, G. Calderini, J. Chauveau, 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, A. J.S. Smith, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, A. Pilloni, G. Piredda, C. Bünger, S. Dittrich, O. Grünberg, M. Heß, T. Leddig, C. Voß, R. Waldi, T. Adye, F. F. Wilson, S. Emery, G. Hamel De Monchenault, G. Vasseur, D. Aston, C. Cartaro, M. R. Convery, J. Dorfan, W. Dunwoodie, M. Ebert, R. C. Field, B. G. Fulsom, M. T. Graham, C. Hast, W. R. Innes, P. Kim, D. W.G.S. Leith, S. Luitz, V. Luth, 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, A. Randle-Conde, S. J. Sekula, M. Bellis, P. R. Burchat, E. M.T. Puccio, M. S. Alam, J. A. Ernst, R. Gorodeisky, N. Guttman, D. R. Peimer, A. Soffer, S. M. Spanier, J. L. Ritchie, R. F. Schwitters, J. M. Izen, X. C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, J. Albert, A. Beaulieu, F. U. Bernlochner, G. J. King, R. Kowalewski, T. Lueck, I. M. Nugent, J. M. Roney, N. Tasneem, T. J. Gershon, P. F. Harrison, T. E. Latham, R. Prepost, S. L. Wu

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

23 Scopus citations

Abstract

We study the processes γγ→KS0K±πℓ and γγ→K+K-π0 using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a0(1950) resonance with parameters m=1931±14±22 MeV/c2 and Γ=271±22±29 MeV.

Original language	English (US)
Article number	012005
Journal	Physical Review D
Volume	93
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.93.012005
State	Published - Jan 20 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.93.012005

Cite this

Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Y. G., Koch, H., Schroeder, T., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., ... Wu, S. L. (2016). Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions. Physical Review D, 93(1), Article 012005. https://doi.org/10.1103/PhysRevD.93.012005

@article{43089c0351e948069a67310876b24b08,

title = "Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions",

abstract = "We study the processes γγ→KS0K±πℓ and γγ→K+K-π0 using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a0(1950) resonance with parameters m=1931±14±22 MeV/c2 and Γ=271±22±29 MeV.",

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 H. Koch and T. Schroeder 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 Golubev, {V. B.} and Kravchenko, {E. A.} and Onuchin, {A. P.} and Serednyakov, {S. I.} and Skovpen, {Yu I.} and Solodov, {E. P.} and Todyshev, {K. Yu} and Lankford, {A. J.} 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 J. Kim and Miyashita, {T. S.} and P. Ongmongkolkul and Porter, {F. C.} and M. R{\"o}hrken and Z. Huard and Meadows, {B. T.} and Pushpawela, {B. G.} and Sokoloff, {M. D.} and L. Sun 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 A. Zallo and S. Passaggio and C. Patrignani and B. Bhuyan and U. Mallik and C. Chen and J. Cochran and S. Prell and H. Ahmed and Pennington, {M. R.} and Gritsan, {A. V.} and N. Arnaud and M. Davier and {Le Diberder}, F. and Lutz, {A. M.} and G. Wormser and Lange, {D. J.} and Wright, {D. M.} and Coleman, {J. P.} and E. Gabathuler and Hutchcroft, {D. E.} and Payne, {D. J.} and C. Touramanis and Bevan, {A. J.} and {Di Lodovico}, F. and R. Sacco and G. Cowan and Sw Banerjee and Brown, {D. N.} and Davis, {C. L.} and Denig, {A. G.} and M. Fritsch 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 R. Cheaib and Robertson, {S. H.} and B. Dey and N. Neri and F. Palombo and L. Cremaldi and R. Godang and Summers, {D. J.} and P. Taras and {De Nardo}, G. and C. Sciacca and G. Raven and Jessop, {C. P.} and Losecco, {J. M.} and K. Honscheid and R. Kass and A. Gaz and M. Margoni and M. Posocco and M. Rotondo 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 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 Smith, {A. J.S.} and F. Anulli and R. Faccini and F. Ferrarotto and F. Ferroni and A. Pilloni and G. Piredda and C. B{\"u}nger and S. Dittrich and O. Gr{\"u}nberg and M. He{\ss} and T. Leddig and C. Vo{\ss} and R. Waldi and T. Adye and Wilson, {F. F.} and S. Emery and {Hamel De Monchenault}, G. and G. Vasseur and D. Aston and C. Cartaro and Convery, {M. R.} and J. Dorfan and W. Dunwoodie and M. Ebert and Field, {R. C.} and Fulsom, {B. G.} and Graham, {M. T.} and C. Hast and Innes, {W. R.} and P. Kim and Leith, {D. W.G.S.} and S. Luitz and V. Luth 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 A. Randle-Conde and Sekula, {S. J.} and M. Bellis and Burchat, {P. R.} and Puccio, {E. M.T.} and Alam, {M. S.} 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 Schwitters, {R. F.} and Izen, {J. M.} and Lou, {X. C.} and F. Bianchi and {De Mori}, F. and A. Filippi and D. Gamba 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 Nugent, {I. M.} and Roney, {J. M.} and N. Tasneem and Gershon, {T. J.} and Harrison, {P. F.} and Latham, {T. E.} and R. Prepost and Wu, {S. L.}",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = jan,

day = "20",

doi = "10.1103/PhysRevD.93.012005",

language = "English (US)",

volume = "93",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "1",

}

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, YG, Koch, H, Schroeder, T, Hearty, C, Mattison, TS, McKenna, JA, So, RY, Blinov, VE, Buzykaev, AR, Druzhinin, VP, Golubev, VB, Kravchenko, EA, Onuchin, AP, Serednyakov, SI, Skovpen, YI, Solodov, EP, Todyshev, KY, Lankford, AJ, Gary, JW, Long, O, Eisner, AM, Lockman, WS, Panduro Vazquez, W, Chao, DS, Cheng, CH, Echenard, B, Flood, KT, Hitlin, DG, Kim, J, Miyashita, TS, Ongmongkolkul, P, Porter, FC, Röhrken, M, Huard, Z, Meadows, BT, Pushpawela, BG, Sokoloff, MD, Sun, L, 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, Zallo, A, Passaggio, S, Patrignani, C, Bhuyan, B, Mallik, U, Chen, C, Cochran, J, Prell, S, Ahmed, H, Pennington, MR, Gritsan, AV, Arnaud, N, Davier, M, Le Diberder, F, Lutz, AM, Wormser, G, Lange, DJ, Wright, DM, Coleman, JP, Gabathuler, E, Hutchcroft, DE, Payne, DJ, Touramanis, C, Bevan, AJ, Di Lodovico, F, Sacco, R, Cowan, G, Banerjee, S, Brown, DN, Davis, CL, Denig, AG, Fritsch, M, Gradl, W, Griessinger, K, Hafner, A, Schubert, KR, Barlow, RJ, Lafferty, GD, Cenci, R, Jawahery, A, Roberts, DA, Cowan, R, Cheaib, R, Robertson, SH, Dey, B, Neri, N, Palombo, F, Cremaldi, L, Godang, R, Summers, DJ, Taras, P, De Nardo, G, Sciacca, C, Raven, G, Jessop, CP, Losecco, JM, Honscheid, K, Kass, R, Gaz, A, Margoni, M, Posocco, M, Rotondo, M, Simi, G, Simonetto, F, Stroili, R, Akar, S, Ben-Haim, E, Bomben, M, Bonneaud, GR, Calderini, G, Chauveau, J, 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, Smith, AJS, Anulli, F, Faccini, R, Ferrarotto, F, Ferroni, F, Pilloni, A, Piredda, G, Bünger, C, Dittrich, S, Grünberg, O, Heß, M, Leddig, T, Voß, C, Waldi, R, Adye, T, Wilson, FF, Emery, S, Hamel De Monchenault, G, Vasseur, G, Aston, D, Cartaro, C, Convery, MR, Dorfan, J, Dunwoodie, W, Ebert, M, Field, RC, Fulsom, BG, Graham, MT, Hast, C, Innes, WR, Kim, P, Leith, DWGS, Luitz, S, Luth, V, Macfarlane, DB, Muller, DR, Neal, H, Ratcliff, BN, Roodman, A, Sullivan, MK, Va'Vra, J, Wisniewski, WJ, Purohit, MV, Wilson, JR, Randle-Conde, A, Sekula, SJ, Bellis, M, Burchat, PR, Puccio, EMT, Alam, MS, Ernst, JA, Gorodeisky, R, Guttman, N, Peimer, DR, Soffer, A, Spanier, SM, Ritchie, JL, Schwitters, RF, Izen, JM, Lou, XC, Bianchi, F, De Mori, F, Filippi, A, Gamba, D, Lanceri, L, Vitale, L, Martinez-Vidal, F, Oyanguren, A, Albert, J, Beaulieu, A, Bernlochner, FU, King, GJ, Kowalewski, R, Lueck, T, Nugent, IM, Roney, JM, Tasneem, N, Gershon, TJ, Harrison, PF, Latham, TE, Prepost, R & Wu, SL 2016, 'Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions', Physical Review D, vol. 93, no. 1, 012005. https://doi.org/10.1103/PhysRevD.93.012005

TY - JOUR

T1 - Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions

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 - Koch, H.

AU - Schroeder, T.

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 - Golubev, V. B.

AU - Kravchenko, E. A.

AU - Onuchin, A. P.

AU - Serednyakov, S. I.

AU - Skovpen, Yu I.

AU - Solodov, E. P.

AU - Todyshev, K. Yu

AU - Lankford, A. J.

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 - Kim, J.

AU - Miyashita, T. S.

AU - Ongmongkolkul, P.

AU - Porter, F. C.

AU - Röhrken, M.

AU - Huard, Z.

AU - Meadows, B. T.

AU - Pushpawela, B. G.

AU - Sokoloff, M. D.

AU - Sun, L.

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 - Zallo, A.

AU - Passaggio, S.

AU - Patrignani, C.

AU - Bhuyan, B.

AU - Mallik, U.

AU - Chen, C.

AU - Cochran, J.

AU - Prell, S.

AU - Ahmed, H.

AU - Pennington, M. R.

AU - Gritsan, A. V.

AU - Arnaud, N.

AU - Davier, M.

AU - Le Diberder, F.

AU - Lutz, A. M.

AU - Wormser, G.

AU - Lange, D. J.

AU - Wright, D. M.

AU - Coleman, J. P.

AU - Gabathuler, E.

AU - Hutchcroft, D. E.

AU - Payne, D. J.

AU - Touramanis, C.

AU - Bevan, A. J.

AU - Di Lodovico, F.

AU - Sacco, R.

AU - Cowan, G.

AU - Banerjee, Sw

AU - Brown, D. N.

AU - Davis, C. L.

AU - Denig, A. G.

AU - Fritsch, M.

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.

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PY - 2016/1/20

Y1 - 2016/1/20

N2 - We study the processes γγ→KS0K±πℓ and γγ→K+K-π0 using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a0(1950) resonance with parameters m=1931±14±22 MeV/c2 and Γ=271±22±29 MeV.

AB - We study the processes γγ→KS0K±πℓ and γγ→K+K-π0 using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. We observe ηc decays to both final states and perform Dalitz plot analyses using a model-independent partial wave analysis technique. This allows a model-independent measurement of the mass-dependence of the I=1/2 Kπ S-wave amplitude and phase. A comparison between the present measurement and those from previous experiments indicates similar behavior for the phase up to a mass of 1.5 GeV/c2. In contrast, the amplitudes show very marked differences. The data require the presence of a new a0(1950) resonance with parameters m=1931±14±22 MeV/c2 and Γ=271±22±29 MeV.

UR - http://www.scopus.com/inward/record.url?scp=84955302113&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84955302113&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.93.012005

DO - 10.1103/PhysRevD.93.012005

M3 - Article

AN - SCOPUS:84955302113

SN - 2470-0010

VL - 93

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012005

ER -

Measurement of the I=1 /2 Kπ S -wave amplitude from Dalitz plot analyses of ηc →k K ¯ π in two-photon interactions

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