Exotic meson 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>1600</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>
 with 
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Alexeev, G. D.; Alexeev, M.; Amoroso, A.; Andrieux, V.; Аносов, В.; Augsten, K.; Augustyniak, W.; Azevedo, C.D.R.; Badełek, B.; Balestra, F.; Ball, M.; Barth, J.; Beck, R.; Bedfer, Y.; Antequera, J. Berenguer; Bernhard, J.; Bodlak, M.; Bradamante, F.; Bressan, A.; Burtsev, V.E.; Chang, W. C.; Chatterjee, C.; Chiosso, M.; Chumakov, A.G.; Chung, S. U.; Cicuttin, A.; Correia, P.M.M.; Crespo, M.L.; D’Ago, D.; Torre, S.; Dasgupta, S.; Denisenko, I.; Денисов, О.; Donskov, S.V.; Doshita, N.; Dreisbach, Ch.; Dünnweber, W.; Dusaev, R. R.; Efremov, A.; Eremeev, D.; Eversheim, P.D.; Faccioli, P.; Faessler, M.; Finger, M.; Fischer, H.; Floethner, K.; Franco, C.; Friedrich, Jan; Frolov, V. V.; Ordóñez, Luis G.; Gautheron, F.; Gavrichtchouk, O.P.; Gerassimov, S.; Giarra, J.; Giordano, D.; Gorzellik, M.; Grasso, A.; Gridin, A.; Perdekamp, M. Grosse; Grube, B.; Grüner, M.; Guskov, A.; Haas, Florian; Harrach, D. von; Heitz, R.; Hoffmann, M. Dano; Horikawa, N.; d’Hose, N.; Hsieh, C.-Y.; Huber, S.; Ishimoto, S.; Иванов, А.; Iwata, T.; Jandek, M.; Jarý, V.; Joosten, R.; Kabuß, E.; Kašpar, F.; Kerbizi, A.; Ketzer, B.; Khaustov, G.V.; Khokhlov, Yu.A.; Kisselev, Yu.; Klein, F.; Koivuniemi, J. H.; Kolosov, V.N.; Konorov, I.; Константинов, В.Ф.; Kotzinian, A.M.; Kouznetsov, O.; Koval, A.; Král, Zdeněk; Krinner, F.; Kunne, F.; Kurek, K.; Kurjata, R.; Kveton, A.; Lavičková, K.; Levorato, S.; Lian, Y.-S.; Lichtenstadt, J.; Lin, P.-J.; Longo, Riccardo; Lyubovitskij, Valery E.; Maggiora, A.; Magnon, A.; Makins, N.; Makke, N.; Mallot, G.K.; Maltsev, A.; Mamon, S.A.; Mariański, B.; Martin, A.; Marzec, J.; Matoušek, Jan; Matsuda, T.; Mattson, G.; Metzger, F.R.; Meyer, M.; Meyer, W.; Mikhailov, Yu.V.; Mikhasenko, M.; Mitrofanov, E.; Miyachi, Y.; Moretti, A.; Nagaytsev, A.; Naim, C.; Neyret, D.; Nový, J.; Nowak, W.-D.; Nukazuka, G.; Оlshevsky, А.G.; Ostrick, M.; Panzieri, D.; Parsamyan, B.; Paul, S.; Pekeler, H.; Peng, J.-C.; Pešek, M.; Peshekhonov, D.V.; Pešková, M.; Pierre, N.; Platchkov, S.; Pochodzalla, J.; Polyakov, V.A.; Pretz, J.; Quaresma, M.; Quintans, C.; Reicherz, G.; Riedl, C.; Rudnicki, T.; Ryabchikov, D. I.; Rychter, A.; Rymbekova, A.; Samoylenko, V.D.; Sandacz, A.; Sarkar, S.; Savin, I.; Sbrizzai, G.; Schmeing, Stephan; Schmieden, H.; Selyunin, A.; Sharko, K.; Sinha, L.; Slunečka, M.; Spülbeck, D.; Srnka, A.; Steffen, D.; Stolarski, M.; Subrt, O.; Šulc, M.; Suzuki, Hiromasa; Tessaro, S.; Tessarotto, F.; Thiel, A.; Tomsa, J.; Tosello, F.; Townsend, A.; Pandit, Triloki; Tskhay, V.; Uhl, S.; Valinoti, B.; Vauth, A.; Veit, B.M.; Veloso, J.F.C.A.; Ventura, Bartolomeo Della; Vidon, A.; Virius, M.; Wagner, M. N.; Wallner, S.; Заремба, К.; Zavertyaev, M.; Zemko, M.; Zemlyanichkina, E.; Zhao, Yong; Ziembicki, M.

doi:10.1103/physrevd.105.012005

Cited by 12 publications

(6 citation statements)

References 72 publications

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“…Unitarity was first enforced strictly on the two channels available, then extended to a third unconstrained ρρ channel, which is known to contribute substantially to the resonances in this region. [27]. A resonant π 1 (1600) is required to describe data at high t .…”

Section: A the Light Sectormentioning

confidence: 99%

“…In the future, these coupled channel analyses will become the standard approach to unravel physics from data. Focusing on the hybrid sector, a major step forward will be studying the high statistics 3π system by COMPASS in a complete analytic and unitary framework [27,36]. This will require to understand nontrivial production mechanisms, that strongly depend on the momentum transferred, and can distort the resonance line shapes (see Sec.…”

Section: A the Light Sectormentioning

confidence: 99%

“…It is a known fact that most resonances couple strongly to three or more particles [1]. Some of these are exotics, as they do not fit the naïve quark model expectations, like the Roper resonance N (1440), the a 1 (1420) seen by COMPASS [62,63], and the hybrid candidate π 1 (1600) discussed above [27,64]. In the heavy sector, several XYZ states have significant three-particle decay modes, most notably the X(3872) and the T + cc [2].…”

Section: -Body Problemmentioning

confidence: 99%

“…FIG.2: Left panel: Intensity of the exotic 1 −+ ρπ P -wave from COMPASS[27]. A resonant π 1 (1600) is required to describe data at high t .…”

mentioning

confidence: 99%

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Snowmass white paper: Need for amplitude analysis in the discovery of new hadrons

Albaladejo¹,

Battaglieri²,

Bibrzycki³

et al. 2022

Preprint

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We highlight the need for the development of comprehensive amplitude analysis methods to further our understanding of hadron spectroscopy. Reaction amplitudes constrained by first principles of S-matrix theory and by QCD phenomenology are needed to extract robust interpretations of the data from experiments and from lattice calculations.In the last two decades, high-energy physics experiments have delivered a lot of unexpected exotic hadron resonances, that challenge the minimal quark model lore of baryons with three quarks and mesons with a quark-antiquark pair. Candidates for tetraquarks, pentaquarks, molecules, and hadrons with gluonic degrees of freedom have been found [1,2]. Establishing the existence of isolated resonances that go beyond the minimal quark model is just the first step: one needs to identify the complete multiplets and study the differences and similarities among their members. This

show abstract

Section: A the Light Sectormentioning

confidence: 99%

Section: A the Light Sectormentioning

confidence: 99%

Section: -Body Problemmentioning

confidence: 99%

“…FIG.2: Left panel: Intensity of the exotic 1 −+ ρπ P -wave from COMPASS[27]. A resonant π 1 (1600) is required to describe data at high t .…”

mentioning

confidence: 99%

See 2 more Smart Citations

Snowmass white paper: Need for amplitude analysis in the discovery of new hadrons

Albaladejo¹,

Battaglieri²,

Bibrzycki³

et al. 2022

Preprint

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show abstract

“…[14]. Besides the π 1 states, the search for additional hybrid states represents an ongoing experimental effort with contributions from various collaborations [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The phenomenology of the exotic hybrid nonet with $π_1(1600)$ and $η_1(1855)$

Shastry¹,

Fischer²,

Giacosa³

2022

Preprint

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We study the decays of the J PC = 1 −+ hybrid nonet using a Lagrangian invariant under the flavor symmetry, parity reversal, and charge conjugation. We use the available experimental data, the lattice predictions, and the flavor constraints to evaluate the coupling strengths of the π 1 (1600) to various two-body mesonic states. Using these coupling constants, we estimate the partial widths of the two-body decays of the hybrid pion, kaon and the isoscalars. We find that the hybrid kaon can be nearly as broad as the π 1 (1600). Quite remarkably, we find also that the light isoscalar must be significantly narrow while the width of the heavy isoscalar can be matched to the recently observed η 1 (1855).

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