Exotic and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>q</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>q</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow></mml:math>resonances in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml

Chung, S. U.; Eugenio, P.; Suh, J. S.; Danyo, K.; Witkowski, M.; Taegar, S. A.; Yershov, A. A.; Dorofeev, V.; Vardanyan, I.; Ryabchikov, D.I.; Shen, X. Y.; Bar‐Yam, Z.; Olchanski, C.; Brown, D. S.; Bodyagin, V. A.; Popov, A.; Hackenburg, R.; Sarycheva, L.; Korotkikh, V.; Cason, N. M.; Lipaev, V. V.; Dowd, J.; Ostrovidov, A. I.; Hayek, M.; White, D. B.; Shephard, W. D.; Pedlar, T. K.; Weygand, D. P.; Lu, M.; Nozar, M.; Denisov, S. P.; Adams, T.; Joffe, D.; Kodolova, O.; Hu, J. F.; Bishop, J. M.; Kühn, J.; Иванов, Э. И.; Cummings, J. P.; Stienike, D. L.; Napolitano, J.; LoSecco, J. M.; Seth, K. K.; Kostin,; Kern, W.; Shenhav, N.; Willutzki, H. J.; Manak, J. J.; King, E.; Tomaradze, A.; Fan, X.; Adams, G. S.

doi:10.1103/physrevd.65.072001

Cited by 65 publications

(45 citation statements)

References 39 publications

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“…2 0 Dalitz plot analyses. Another 1 Àþ state, the 1 ð1600Þ, decaying into [7][8][9], 0 [10,11], f 1 ð1285Þ [12,13], and b 1 ð1235Þ [13,14] was observed in peripheral À p interactions in E852 and VES, and confirmed in pp ! b 1 ð1235Þ [15].…”

mentioning

confidence: 88%

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/c
Alekseev¹,
Alexakhin²,
Alexandrov³
et al. 2010
Phys. Rev. Lett.
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The COMPASS experiment at the CERN SPS has studied the diffractive dissociation of negative pions into the π- π- π+ final state using a 190 GeV/c pion beam hitting a lead target. A partial wave analysis has been performed on a sample of 420,000 events taken at values of the squared 4-momentum transfer t' between 0.1 and 1 GeV2/c2. The well-known resonances a1(1260), a2(1320), and π2(1670) are clearly observed. In addition, the data show a significant natural-parity exchange production of a resonance with spin-exotic quantum numbers J(PC)=1-+ at 1.66 GeV/c2 decaying to ρπ. The resonant nature of this wave is evident from the mass-dependent phase differences to the J(PC)=2-+ and 1++ waves. From a mass-dependent fit a resonance mass of (1660±10(-64)(+0)) MeV/c2 and a width of (269±21(-64)(+42)) MeV/c2 are deduced, with an intensity of (1.7±0.2)% of the total intensity.

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mentioning

confidence: 88%

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/c
Alekseev¹,
Alexakhin²,
Alexandrov³
et al. 2010
Phys. Rev. Lett.
Self Cite
119
7
70
2
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“…[66] decaying to σπ and f 2 (1270)π, and in ref. [67] decaying to (ρ(770) 0 π) D , though confirmation is still needed. We find the decay modes a 1 (1640) → (ρ(770) 0 π) D and a 1 (1640) → (σπ) with a combined fit fraction of 6.6%.…”

Section: Jhep05(2017)143mentioning

confidence: 99%

Amplitude analyses of D 0 → π + π − π + π − and D 0 → K + K − π + π − decays

d’Argent

Skidmore

Benton

et al. 2017

J. High Energ. Phys.

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“…This is because the extracted depends on the decay amplitudes, particularly π 2 (2100) on its phase. 3 Thus, the difference in the decay amplitude between our unitary model and the isobar-fit model does matter. We examine this for the strong decays of a 1 and 2 , which is suggestive enough for the extraction of with the isobar-model analysis.…”

Section: Z-diagram Effects On Dalitz Plotsmentioning

confidence: 90%

“…À À þ p and À p ! À 0 0 p data from the E852 experiment [2][3][4], a 1 ð1260Þ, a 2 ð1320Þ, 2 ð1670Þ, and a 4 ð2020Þ resonances were identified, and the exotic J PC ¼ 1 Àþ meson near 1.6 GeV [ 1 ð1600Þ] proposed from an earlier analysis was ruled out. The CLAS analysis [6] of p !…”

Section: Introductionmentioning

confidence: 99%

Unitary coupled-channels model for three-mesons decays of heavy mesons

et al. 2011

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A unitary coupled-channels model is presented for investigating the decays of heavy mesons and excited meson states into three light pseudoscalar mesons. The model accounts for the three-mesons final state interactions in the decay processes, as required by both the three-body and two-body unitarity conditions. In the absence of the Z-diagram mechanisms that are necessary consequences of the three-body unitarity, our decay amplitudes are reduced to a form similar to those used in the so-called isobar-model analysis. We apply our coupled-channels model to the three-pions decays of a1(1260), pi2(1670), pi2(2100), and D0 mesons, and show that the Z-diagram mechanisms can contribute to the calculated Dalitz plot distributions by as much as 30% in magnitudes in the regions where f0(600), rho(770), and f2(1270) dominate the distributions. Also, by fitting to the same Dalitz plot distributions, we demonstrate that the decay amplitudes obtained with the unitary model and the isobar model can be rather different, particularly in the phase that plays a crucial role in extracting the CKM CP-violating phase from the data of B meson decays. Our results indicate that the commonly used isobar model analysis must be extended to account for the final state interactions required by the three-body unitarity to reanalyze the three-mesons decays of heavy mesons, thereby exploring hybrid or exotic mesons, and signatures of physics beyond the standard model.Comment: 32 pages, 10 figures. Version to appear in PR

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Exotic andqq¯resonances in theπ+π

Cited by 65 publications

References 39 publications

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/c
Alekseev¹,
Alexakhin²,
Alexandrov³
et al. 2010
Phys. Rev. Lett.
Self Cite
119
7
70
2
View full text Add to dashboard Cite

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/c
Alekseev¹,
Alexakhin²,
Alexandrov³
et al. 2010
Phys. Rev. Lett.
Self Cite
119
7
70
2
View full text Add to dashboard Cite

Amplitude analyses of D 0 → π + π − π + π − and D 0 → K + K − π + π − decays

Unitary coupled-channels model for three-mesons decays of heavy mesons

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Exotic andqq¯resonances in theπ+π

Cited by 65 publications

References 39 publications

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/cAlekseev1, Alexakhin2, Alexandrov3 et al. 2010Phys. Rev. Lett.Self Cite1197702View full textAdd to dashboardCite

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/cAlekseev1, Alexakhin2, Alexandrov3 et al. 2010Phys. Rev. Lett.Self Cite1197702View full textAdd to dashboardCite

Amplitude analyses of D 0 → π + π − π + π − and D 0 → K + K − π + π − decays

Unitary coupled-channels model for three-mesons decays of heavy mesons

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Product

Resources

About

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/c
Alekseev¹,
Alexakhin²,
Alexandrov³
et al. 2010
Phys. Rev. Lett.
Self Cite
119
7
70
2
View full text Add to dashboard Cite

Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/c
Alekseev¹,
Alexakhin²,
Alexandrov³
et al. 2010
Phys. Rev. Lett.
Self Cite
119
7
70
2
View full text Add to dashboard Cite