Exotic meson π1 (1600) with JPC=1-+ and its decay into ρ (770)π

G. D. Alexeev; M. G. Alexeev; A. Amoroso; V. Andrieux; V. Anosov; K. Augsten; W. Augustyniak; C. D.R. Azevedo; B. Badełek; F. Balestra; M. Ball; J. Barth; R. Beck; Y. Bedfer; J. Berenguer Antequera; J. Bernhard; M. Bodlak; F. Bradamante; A. Bressan; V. E. Burtsev; W. C. Chang; C. Chatterjee; M. Chiosso; A. G. Chumakov; S. U. Chung; A. Cicuttin; P. M.M. Correia; M. L. Crespo; D. D'Ago; S. Dalla Torre; S. S. Dasgupta; S. Dasgupta; I. Denisenko; O. Yu Denisov; S. V. Donskov; N. Doshita; Ch Dreisbach; W. Dünnweber; R. R. Dusaev; A. Efremov; D. Eremeev; P. D. Eversheim; P. Faccioli; M. Faessler; M. Finger; M. Finger; H. Fischer; K. Floethner; C. Franco; J. M. Friedrich; V. Frolov; L. Garcia Ordonez; F. Gautheron; O. P. Gavrichtchouk; S. Gerassimov; J. Giarra; D. Giordano; M. Gorzellik; A. Grasso; A. Gridin; M. Grosse Perdekamp; B. Grube; M. Grüner; A. Guskov; F. Haas; D. Von Harrach; R. Heitz; M. Hoffmann; N. Horikawa; N. D'Hose; C. Y. Hsieh; S. Huber; S. Ishimoto; A. Ivanov; T. Iwata; M. Jandek; V. Jary; R. Joosten; E. Kabuß; F. Kaspar; A. Kerbizi; B. Ketzer; G. V. Khaustov; Yu A. Khokhlov; Yu Kisselev; F. Klein; J. H. Koivuniemi; V. N. Kolosov; I. Konorov; V. F. Konstantinov; A. M. Kotzinian; O. M. Kouznetsov; A. Koval; Z. Kral; F. Krinner; F. Kunne; K. Kurek; R. P. Kurjata; A. Kveton; K. Lavickova; S. Levorato; Y. S. Lian; J. Lichtenstadt; P. J. Lin; R. Longo; V. E. Lyubovitskij; A. Maggiora; A. Magnon; N. Makins; N. Makke; G. K. Mallot; A. Maltsev; S. A. Mamon; B. Marianski; A. Martin; J. Marzec; J. Matoušek; T. Matsuda; G. Mattson; F. Metzger; M. Meyer; W. Meyer; Yu V. Mikhailov; M. Mikhasenko; E. Mitrofanov; Y. Miyachi; A. Moretti; A. Nagaytsev; C. Naim; D. Neyret; J. Nový; W. D. Nowak; G. Nukazuka; A. G. Olshevsky; M. Ostrick; D. Panzieri; B. Parsamyan; S. Paul; H. Pekeler; J. C. Peng; M. Pešek; D. V. Peshekhonov; M. Pešková; N. Pierre; S. Platchkov; J. Pochodzalla; V. A. Polyakov; J. Pretz; M. Quaresma; C. Quintans; G. Reicherz; C. Riedl; T. Rudnicki; D. I. Ryabchikov; A. Rychter; A. Rymbekova; V. D. Samoylenko; A. Sandacz; S. Sarkar; I. A. Savin; G. Sbrizzai; S. Schmeing; H. Schmieden; A. Selyunin; K. Sharko; L. Sinha; M. Slunecka; D. Spülbeck; A. Srnka; D. Steffen; M. Stolarski; O. Subrt; M. Sulc; H. Suzuki; S. Tessaro; F. Tessarotto; A. Thiel; J. Tomsa; F. Tosello; A. Townsend; T. Triloki; V. Tskhay; S. Uhl; B. Valinoti; A. Vauth; B. M. Veit; J. Veloso; B. Ventura; A. Vidon; M. Virius; M. Wagner; S. Wallner; K. Zaremba; M. Zavertyaev; M. Zemko; E. Zemlyanichkina; Y. Zhao; M. Ziembicki

doi:10.1103/PhysRevD.105.012005

Exotic meson π1 (1600) with JPC=1-+ and its decay into ρ (770)π

G. D. Alexeev, M. G. Alexeev, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C. D.R. Azevedo, B. Badełek, F. Balestra, M. Ball, J. Barth, R. Beck, Y. Bedfer, J. Berenguer Antequera, J. Bernhard, M. Bodlak, F. Bradamante, A. Bressan, V. E. BurtsevW. C. Chang, C. Chatterjee, M. Chiosso, A. G. Chumakov, S. U. Chung, A. Cicuttin, P. M.M. Correia, M. L. Crespo, D. D'Ago, S. Dalla Torre, S. S. Dasgupta, S. Dasgupta, I. Denisenko, O. Yu Denisov, S. V. Donskov, N. Doshita, Ch Dreisbach, W. Dünnweber, R. R. Dusaev, A. Efremov, D. Eremeev, P. D. Eversheim, P. Faccioli, M. Faessler, M. Finger, M. Finger, H. Fischer, K. Floethner, C. Franco, J. M. Friedrich, V. Frolov, L. Garcia Ordonez, F. Gautheron, O. P. Gavrichtchouk, S. Gerassimov, J. Giarra, D. Giordano, M. Gorzellik, A. Grasso, A. Gridin, M. Grosse Perdekamp, B. Grube, M. Grüner, A. Guskov, F. Haas, D. Von Harrach, R. Heitz, M. Hoffmann, N. Horikawa, N. D'Hose, C. Y. Hsieh, S. Huber, S. Ishimoto, A. Ivanov, T. Iwata, M. Jandek, V. Jary, R. Joosten, E. Kabuß, F. Kaspar, A. Kerbizi, B. Ketzer, G. V. Khaustov, Yu A. Khokhlov, Yu Kisselev, F. Klein, J. H. Koivuniemi, V. N. Kolosov, I. Konorov, V. F. Konstantinov, A. M. Kotzinian, O. M. Kouznetsov, A. Koval, Z. Kral, F. Krinner^*, F. Kunne, K. Kurek, R. P. Kurjata, A. Kveton, K. Lavickova, S. Levorato, Y. S. Lian, J. Lichtenstadt, P. J. Lin, R. Longo, V. E. Lyubovitskij, A. Maggiora, A. Magnon, N. Makins, N. Makke, G. K. Mallot, A. Maltsev, S. A. Mamon, B. Marianski, A. Martin, J. Marzec, J. Matoušek, T. Matsuda, G. Mattson, F. Metzger, M. Meyer, W. Meyer, Yu V. Mikhailov, M. Mikhasenko, E. Mitrofanov, Y. Miyachi, A. Moretti, A. Nagaytsev, C. Naim, D. Neyret, J. Nový, W. D. Nowak, G. Nukazuka, A. G. Olshevsky, M. Ostrick, D. Panzieri, B. Parsamyan^*, S. Paul, H. Pekeler, J. C. Peng, M. Pešek, D. V. Peshekhonov, M. Pešková, N. Pierre, S. Platchkov, J. Pochodzalla, V. A. Polyakov, J. Pretz, M. Quaresma, C. Quintans, G. Reicherz, C. Riedl, T. Rudnicki, D. I. Ryabchikov^*, A. Rychter, A. Rymbekova, V. D. Samoylenko, A. Sandacz, S. Sarkar, I. A. Savin, G. Sbrizzai, S. Schmeing, H. Schmieden, A. Selyunin, K. Sharko, L. Sinha, M. Slunecka, D. Spülbeck, A. Srnka, D. Steffen, M. Stolarski, O. Subrt, M. Sulc, H. Suzuki, S. Tessaro, F. Tessarotto^*, A. Thiel, J. Tomsa, F. Tosello, A. Townsend, T. Triloki, V. Tskhay, S. Uhl, B. Valinoti, A. Vauth, B. M. Veit, J. Veloso, B. Ventura, A. Vidon, M. Virius, M. Wagner, S. Wallner, K. Zaremba, M. Zavertyaev, M. Zemko, E. Zemlyanichkina, Y. Zhao, M. Ziembicki

^*Corresponding author for this work

School of Physics and Astronomy

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

15 Scopus citations

Abstract

We study the spin-exotic JPC=1-+ amplitude in single-diffractive dissociation of 190 GeV/c pions into π-π-π+ using a hydrogen target and confirm the π1(1600)→ρ(770)π amplitude, which interferes with a nonresonant 1-+ amplitude. We demonstrate that conflicting conclusions from previous studies on these amplitudes can be attributed to different analysis models and different treatment of the dependence of the amplitudes on the squared four-momentum transfer and we thus reconcile these experimental findings. We study the nonresonant contributions to the π-π-π+ final state using pseudodata generated on the basis of a Deck model. Subjecting pseudodata and real data to the same partial-wave analysis, we find good agreement concerning the spectral shape and its dependence on the squared four-momentum transfer for the JPC=1-+ amplitude and also for amplitudes with other JPC quantum numbers. We investigate for the first time the amplitude of the π-π+ subsystem with JPC=1 - in the 3π amplitude with JPC=1-+ employing the novel freed-isobar analysis scheme. We reveal this π-π+ amplitude to be dominated by the ρ(770) for both the π1(1600) and the nonresonant contribution. These findings largely confirm the underlying assumptions for the isobar model used in all previous partial-wave analyses addressing the JPC=1-+ amplitude.

Original language	English
Article number	012005
Journal	Physical Review D
Volume	105
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.105.012005
State	Published - 1 Jan 2022

Funding

Funders	Funder number
Israel Academy of Sciences and Humanities
Seventh Framework Programme
Ministry of Science and Technology, Taiwan
Tomsk Polytechnic University
Bundesministerium für Bildung und Forschung
Deutsche Forschungsgemeinschaft
European Commission
Daiko and Yamada Foundations
Ministry of Education, Culture, Sports, Science and Technology
Horizon 2020 Framework Programme	824093, 283286
National Science Foundation	PHY-1506416
Japan Society for the Promotion of Science	18002006, 20540299, 26247032, 18540281
Ministerstvo Školství, Mládeže a Tělovýchovy	LM20150581
Labex	ANR-10-LBX-0038, ANR-11-IDEX-003-01
Narodowe Centrum Nauki	2017/26/M/ST2/00498
Fundação para a Ciência e a Tecnologia	CERN/FIS-PAR/0022/2019, CERN/FIS-PAR/0007/2017
Transregional Research Center	TR110
CERN-RFBR	12-02-91500

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10.1103/PhysRevD.105.012005

Cite this

Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anosov, V., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Berenguer Antequera, J., Bernhard, J., Bodlak, M., Bradamante, F., Bressan, A., ... Ziembicki, M. (2022). Exotic meson π1 (1600) with JPC=1-+ and its decay into ρ (770)π. Physical Review D, 105(1), Article 012005. https://doi.org/10.1103/PhysRevD.105.012005

@article{33ac6fcf55784c90b73769cd6b9446f3,

title = "Exotic meson π1 (1600) with JPC=1-+ and its decay into ρ (770)π",

abstract = "We study the spin-exotic JPC=1-+ amplitude in single-diffractive dissociation of 190 GeV/c pions into π-π-π+ using a hydrogen target and confirm the π1(1600)→ρ(770)π amplitude, which interferes with a nonresonant 1-+ amplitude. We demonstrate that conflicting conclusions from previous studies on these amplitudes can be attributed to different analysis models and different treatment of the dependence of the amplitudes on the squared four-momentum transfer and we thus reconcile these experimental findings. We study the nonresonant contributions to the π-π-π+ final state using pseudodata generated on the basis of a Deck model. Subjecting pseudodata and real data to the same partial-wave analysis, we find good agreement concerning the spectral shape and its dependence on the squared four-momentum transfer for the JPC=1-+ amplitude and also for amplitudes with other JPC quantum numbers. We investigate for the first time the amplitude of the π-π+ subsystem with JPC=1 - in the 3π amplitude with JPC=1-+ employing the novel freed-isobar analysis scheme. We reveal this π-π+ amplitude to be dominated by the ρ(770) for both the π1(1600) and the nonresonant contribution. These findings largely confirm the underlying assumptions for the isobar model used in all previous partial-wave analyses addressing the JPC=1-+ amplitude.",

author = "Alexeev, {G. D.} and Alexeev, {M. G.} and A. Amoroso and V. Andrieux and V. Anosov and K. Augsten and W. Augustyniak and Azevedo, {C. D.R.} and B. Bade{\l}ek and F. Balestra and M. Ball and J. Barth and R. Beck and Y. Bedfer and {Berenguer Antequera}, J. and J. Bernhard and M. Bodlak and F. Bradamante and A. Bressan and Burtsev, {V. E.} and Chang, {W. C.} and C. Chatterjee and M. Chiosso and Chumakov, {A. G.} and Chung, {S. U.} and A. Cicuttin and Correia, {P. M.M.} and Crespo, {M. L.} and D. D'Ago and {Dalla Torre}, S. and Dasgupta, {S. S.} and S. Dasgupta and I. Denisenko and Denisov, {O. Yu} and Donskov, {S. V.} and N. Doshita and Ch Dreisbach and W. D{\"u}nnweber and Dusaev, {R. R.} and A. Efremov and D. Eremeev and Eversheim, {P. D.} and P. Faccioli and M. Faessler and M. Finger and M. Finger and H. Fischer and K. Floethner and C. Franco and Friedrich, {J. M.} and V. Frolov and {Garcia Ordonez}, L. and F. Gautheron and Gavrichtchouk, {O. P.} and S. Gerassimov and J. Giarra and D. Giordano and M. Gorzellik and A. Grasso and A. Gridin and {Grosse Perdekamp}, M. and B. Grube and M. Gr{\"u}ner and A. Guskov and F. Haas and {Von Harrach}, D. and R. Heitz and M. Hoffmann and N. Horikawa and N. D'Hose and Hsieh, {C. Y.} and S. Huber and S. Ishimoto and A. Ivanov and T. Iwata and M. Jandek and V. Jary and R. Joosten and E. Kabu{\ss} and F. Kaspar and A. Kerbizi and B. Ketzer and Khaustov, {G. V.} and Khokhlov, {Yu A.} and Yu Kisselev and F. Klein and Koivuniemi, {J. H.} and Kolosov, {V. N.} and I. Konorov and Konstantinov, {V. F.} and Kotzinian, {A. M.} and Kouznetsov, {O. M.} and A. Koval and Z. Kral and F. Krinner and F. Kunne and K. Kurek and Kurjata, {R. P.} and A. Kveton and K. Lavickova and S. Levorato and Lian, {Y. S.} and J. Lichtenstadt and Lin, {P. J.} and R. Longo and Lyubovitskij, {V. E.} and A. Maggiora and A. Magnon and N. Makins and N. Makke and Mallot, {G. K.} and A. Maltsev and Mamon, {S. A.} and B. Marianski and A. Martin and J. Marzec and J. Matou{\v s}ek and T. Matsuda and G. Mattson and F. Metzger and M. Meyer and W. Meyer and Mikhailov, {Yu V.} and M. Mikhasenko and E. Mitrofanov and Y. Miyachi and A. Moretti and A. Nagaytsev and C. Naim and D. Neyret and J. Nov{\'y} and Nowak, {W. D.} and G. Nukazuka and Olshevsky, {A. G.} and M. Ostrick and D. Panzieri and B. Parsamyan and S. Paul and H. Pekeler and Peng, {J. C.} and M. Pe{\v s}ek and Peshekhonov, {D. V.} and M. Pe{\v s}kov{\'a} and N. Pierre and S. Platchkov and J. Pochodzalla and Polyakov, {V. A.} and J. Pretz and M. Quaresma and C. Quintans and G. Reicherz and C. Riedl and T. Rudnicki and Ryabchikov, {D. I.} and A. Rychter and A. Rymbekova and Samoylenko, {V. D.} and A. Sandacz and S. Sarkar and Savin, {I. A.} and G. Sbrizzai and S. Schmeing and H. Schmieden and A. Selyunin and K. Sharko and L. Sinha and M. Slunecka and D. Sp{\"u}lbeck and A. Srnka and D. Steffen and M. Stolarski and O. Subrt and M. Sulc and H. Suzuki and S. Tessaro and F. Tessarotto and A. Thiel and J. Tomsa and F. Tosello and A. Townsend and T. Triloki and V. Tskhay and S. Uhl and B. Valinoti and A. Vauth and Veit, {B. M.} and J. Veloso and B. Ventura and A. Vidon and M. Virius and M. Wagner and S. Wallner and K. Zaremba and M. Zavertyaev and M. Zemko and E. Zemlyanichkina and Y. Zhao and M. Ziembicki",

note = "Publisher Copyright: {\textcopyright} 2022 authors. Published by the American Physical Society.",

year = "2022",

month = jan,

day = "1",

doi = "10.1103/PhysRevD.105.012005",

language = "אנגלית",

volume = "105",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "1",

}

Alexeev, GD, Alexeev, MG, Amoroso, A, Andrieux, V, Anosov, V, Augsten, K, Augustyniak, W, Azevedo, CDR, Badełek, B, Balestra, F, Ball, M, Barth, J, Beck, R, Bedfer, Y, Berenguer Antequera, J, Bernhard, J, Bodlak, M, Bradamante, F, Bressan, A, Burtsev, VE, Chang, WC, Chatterjee, C, Chiosso, M, Chumakov, AG, Chung, SU, Cicuttin, A, Correia, PMM, Crespo, ML, D'Ago, D, Dalla Torre, S, Dasgupta, SS, Dasgupta, S, Denisenko, I, Denisov, OY, Donskov, SV, Doshita, N, Dreisbach, C, Dünnweber, W, Dusaev, RR, Efremov, A, Eremeev, D, Eversheim, PD, Faccioli, P, Faessler, M, Finger, M, Finger, M, Fischer, H, Floethner, K, Franco, C, Friedrich, JM, Frolov, V, Garcia Ordonez, L, Gautheron, F, Gavrichtchouk, OP, Gerassimov, S, Giarra, J, Giordano, D, Gorzellik, M, Grasso, A, Gridin, A, Grosse Perdekamp, M, Grube, B, Grüner, M, Guskov, A, Haas, F, Von Harrach, D, Heitz, R, Hoffmann, M, Horikawa, N, D'Hose, N, Hsieh, CY, Huber, S, Ishimoto, S, Ivanov, A, Iwata, T, Jandek, M, Jary, V, Joosten, R, Kabuß, E, Kaspar, F, Kerbizi, A, Ketzer, B, Khaustov, GV, Khokhlov, YA, Kisselev, Y, Klein, F, Koivuniemi, JH, Kolosov, VN, Konorov, I, Konstantinov, VF, Kotzinian, AM, Kouznetsov, OM, Koval, A, Kral, Z, Krinner, F, Kunne, F, Kurek, K, Kurjata, RP, Kveton, A, Lavickova, K, Levorato, S, Lian, YS, Lichtenstadt, J, Lin, PJ, Longo, R, Lyubovitskij, VE, Maggiora, A, Magnon, A, Makins, N, Makke, N, Mallot, GK, Maltsev, A, Mamon, SA, Marianski, B, Martin, A, Marzec, J, Matoušek, J, Matsuda, T, Mattson, G, Metzger, F, Meyer, M, Meyer, W, Mikhailov, YV, Mikhasenko, M, Mitrofanov, E, Miyachi, Y, Moretti, A, Nagaytsev, A, Naim, C, Neyret, D, Nový, J, Nowak, WD, Nukazuka, G, Olshevsky, AG, Ostrick, M, Panzieri, D, Parsamyan, B, Paul, S, Pekeler, H, Peng, JC, Pešek, M, Peshekhonov, DV, Pešková, M, Pierre, N, Platchkov, S, Pochodzalla, J, Polyakov, VA, Pretz, J, Quaresma, M, Quintans, C, Reicherz, G, Riedl, C, Rudnicki, T, Ryabchikov, DI, Rychter, A, Rymbekova, A, Samoylenko, VD, Sandacz, A, Sarkar, S, Savin, IA, Sbrizzai, G, Schmeing, S, Schmieden, H, Selyunin, A, Sharko, K, Sinha, L, Slunecka, M, Spülbeck, D, Srnka, A, Steffen, D, Stolarski, M, Subrt, O, Sulc, M, Suzuki, H, Tessaro, S, Tessarotto, F, Thiel, A, Tomsa, J, Tosello, F, Townsend, A, Triloki, T, Tskhay, V, Uhl, S, Valinoti, B, Vauth, A, Veit, BM, Veloso, J, Ventura, B, Vidon, A, Virius, M, Wagner, M, Wallner, S, Zaremba, K, Zavertyaev, M, Zemko, M, Zemlyanichkina, E, Zhao, Y & Ziembicki, M 2022, 'Exotic meson π1 (1600) with JPC=1-+ and its decay into ρ (770)π', Physical Review D, vol. 105, no. 1, 012005. https://doi.org/10.1103/PhysRevD.105.012005

TY - JOUR

T1 - Exotic meson π1 (1600) with JPC=1-+ and its decay into ρ (770)π

AU - Alexeev, G. D.

AU - Alexeev, M. G.

AU - Amoroso, A.

AU - Andrieux, V.

AU - Anosov, V.

AU - Augsten, K.

AU - Augustyniak, W.

AU - Azevedo, C. D.R.

AU - Badełek, B.

AU - Balestra, F.

AU - Ball, M.

AU - Barth, J.

AU - Beck, R.

AU - Bedfer, Y.

AU - Berenguer Antequera, J.

AU - Bernhard, J.

AU - Bodlak, M.

AU - Bradamante, F.

AU - Bressan, A.

AU - Burtsev, V. E.

AU - Chang, W. C.

AU - Chatterjee, C.

AU - Chiosso, M.

AU - Chumakov, A. G.

AU - Chung, S. U.

AU - Cicuttin, A.

AU - Correia, P. M.M.

AU - Crespo, M. L.

AU - D'Ago, D.

AU - Dalla Torre, S.

AU - Dasgupta, S. S.

AU - Dasgupta, S.

AU - Denisenko, I.

AU - Denisov, O. Yu

AU - Donskov, S. V.

AU - Doshita, N.

AU - Dreisbach, Ch

AU - Dünnweber, W.

AU - Dusaev, R. R.

AU - Efremov, A.

AU - Eremeev, D.

AU - Eversheim, P. D.

AU - Faccioli, P.

AU - Faessler, M.

AU - Finger, M.

AU - Fischer, H.

AU - Floethner, K.

AU - Franco, C.

AU - Friedrich, J. M.

AU - Frolov, V.

AU - Garcia Ordonez, L.

AU - Gautheron, F.

AU - Gavrichtchouk, O. P.

AU - Gerassimov, S.

AU - Giarra, J.

AU - Giordano, D.

AU - Gorzellik, M.

AU - Grasso, A.

AU - Gridin, A.

AU - Grosse Perdekamp, M.

AU - Grube, B.

AU - Grüner, M.

AU - Guskov, A.

AU - Haas, F.

AU - Von Harrach, D.

AU - Heitz, R.

AU - Hoffmann, M.

AU - Horikawa, N.

AU - D'Hose, N.

AU - Hsieh, C. Y.

AU - Huber, S.

AU - Ishimoto, S.

AU - Ivanov, A.

AU - Iwata, T.

AU - Jandek, M.

AU - Jary, V.

AU - Joosten, R.

AU - Kabuß, E.

AU - Kaspar, F.

AU - Kerbizi, A.

AU - Ketzer, B.

AU - Khaustov, G. V.

AU - Khokhlov, Yu A.

AU - Kisselev, Yu

AU - Klein, F.

AU - Koivuniemi, J. H.

AU - Kolosov, V. N.

AU - Konorov, I.

AU - Konstantinov, V. F.

AU - Kotzinian, A. M.

AU - Kouznetsov, O. M.

AU - Koval, A.

AU - Kral, Z.

AU - Krinner, F.

AU - Kunne, F.

AU - Kurek, K.

AU - Kurjata, R. P.

AU - Kveton, A.

AU - Lavickova, K.

AU - Levorato, S.

AU - Lian, Y. S.

AU - Lichtenstadt, J.

AU - Lin, P. J.

AU - Longo, R.

AU - Lyubovitskij, V. E.

AU - Maggiora, A.

AU - Magnon, A.

AU - Makins, N.

AU - Makke, N.

AU - Mallot, G. K.

AU - Maltsev, A.

AU - Mamon, S. A.

AU - Marianski, B.

AU - Martin, A.

AU - Marzec, J.

AU - Matoušek, J.

AU - Matsuda, T.

AU - Mattson, G.

AU - Metzger, F.

AU - Meyer, M.

AU - Meyer, W.

AU - Mikhailov, Yu V.

AU - Mikhasenko, M.

AU - Mitrofanov, E.

AU - Miyachi, Y.

AU - Moretti, A.

AU - Nagaytsev, A.

AU - Naim, C.

AU - Neyret, D.

AU - Nový, J.

AU - Nowak, W. D.

AU - Nukazuka, G.

AU - Olshevsky, A. G.

AU - Ostrick, M.

AU - Panzieri, D.

AU - Parsamyan, B.

AU - Paul, S.

AU - Pekeler, H.

AU - Peng, J. C.

AU - Pešek, M.

AU - Peshekhonov, D. V.

AU - Pešková, M.

AU - Pierre, N.

AU - Platchkov, S.

AU - Pochodzalla, J.

AU - Polyakov, V. A.

AU - Pretz, J.

AU - Quaresma, M.

AU - Quintans, C.

AU - Reicherz, G.

AU - Riedl, C.

AU - Rudnicki, T.

AU - Ryabchikov, D. I.

AU - Rychter, A.

AU - Rymbekova, A.

AU - Samoylenko, V. D.

AU - Sandacz, A.

AU - Sarkar, S.

AU - Savin, I. A.

AU - Sbrizzai, G.

AU - Schmeing, S.

AU - Schmieden, H.

AU - Selyunin, A.

AU - Sharko, K.

AU - Sinha, L.

AU - Slunecka, M.

AU - Spülbeck, D.

AU - Srnka, A.

AU - Steffen, D.

AU - Stolarski, M.

AU - Subrt, O.

AU - Sulc, M.

AU - Suzuki, H.

AU - Tessaro, S.

AU - Tessarotto, F.

AU - Thiel, A.

AU - Tomsa, J.

AU - Tosello, F.

AU - Townsend, A.

AU - Triloki, T.

AU - Tskhay, V.

AU - Uhl, S.

AU - Valinoti, B.

AU - Vauth, A.

AU - Veit, B. M.

AU - Veloso, J.

AU - Ventura, B.

AU - Vidon, A.

AU - Virius, M.

AU - Wagner, M.

AU - Wallner, S.

AU - Zaremba, K.

AU - Zavertyaev, M.

AU - Zemko, M.

AU - Zemlyanichkina, E.

AU - Zhao, Y.

AU - Ziembicki, M.

PY - 2022/1/1

Y1 - 2022/1/1

N2 - We study the spin-exotic JPC=1-+ amplitude in single-diffractive dissociation of 190 GeV/c pions into π-π-π+ using a hydrogen target and confirm the π1(1600)→ρ(770)π amplitude, which interferes with a nonresonant 1-+ amplitude. We demonstrate that conflicting conclusions from previous studies on these amplitudes can be attributed to different analysis models and different treatment of the dependence of the amplitudes on the squared four-momentum transfer and we thus reconcile these experimental findings. We study the nonresonant contributions to the π-π-π+ final state using pseudodata generated on the basis of a Deck model. Subjecting pseudodata and real data to the same partial-wave analysis, we find good agreement concerning the spectral shape and its dependence on the squared four-momentum transfer for the JPC=1-+ amplitude and also for amplitudes with other JPC quantum numbers. We investigate for the first time the amplitude of the π-π+ subsystem with JPC=1 - in the 3π amplitude with JPC=1-+ employing the novel freed-isobar analysis scheme. We reveal this π-π+ amplitude to be dominated by the ρ(770) for both the π1(1600) and the nonresonant contribution. These findings largely confirm the underlying assumptions for the isobar model used in all previous partial-wave analyses addressing the JPC=1-+ amplitude.

AB - We study the spin-exotic JPC=1-+ amplitude in single-diffractive dissociation of 190 GeV/c pions into π-π-π+ using a hydrogen target and confirm the π1(1600)→ρ(770)π amplitude, which interferes with a nonresonant 1-+ amplitude. We demonstrate that conflicting conclusions from previous studies on these amplitudes can be attributed to different analysis models and different treatment of the dependence of the amplitudes on the squared four-momentum transfer and we thus reconcile these experimental findings. We study the nonresonant contributions to the π-π-π+ final state using pseudodata generated on the basis of a Deck model. Subjecting pseudodata and real data to the same partial-wave analysis, we find good agreement concerning the spectral shape and its dependence on the squared four-momentum transfer for the JPC=1-+ amplitude and also for amplitudes with other JPC quantum numbers. We investigate for the first time the amplitude of the π-π+ subsystem with JPC=1 - in the 3π amplitude with JPC=1-+ employing the novel freed-isobar analysis scheme. We reveal this π-π+ amplitude to be dominated by the ρ(770) for both the π1(1600) and the nonresonant contribution. These findings largely confirm the underlying assumptions for the isobar model used in all previous partial-wave analyses addressing the JPC=1-+ amplitude.

UR - http://www.scopus.com/inward/record.url?scp=85123867141&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.105.012005

DO - 10.1103/PhysRevD.105.012005

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AN - SCOPUS:85123867141

SN - 2470-0010

VL - 105

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012005

ER -

Exotic meson π1 (1600) with JPC=1-+ and its decay into ρ (770)π

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