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  1. Pubblicazioni

Evidence for the Cusp Effect in η' Decays into ηπ^{0}π^{0}

Articolo
Data di Pubblicazione:
2023
Abstract:
: Using a sample of 4.3×10^{5} η^{'}→ηπ^{0}π^{0} events selected from the ten billion J/ψ event dataset collected with the BESIII detector, we study the decay η^{'}→ηπ^{0}π^{0} within the framework of nonrelativistic effective field theory. Evidence for a structure at π^{+}π^{-} mass threshold is observed in the invariant mass spectrum of π^{0}π^{0} with a statistical significance of around 3.5σ, which is consistent with the cusp effect as predicted by the nonrelativistic effective field theory. After introducing the amplitude for describing the cusp effect, the ππ scattering length combination a_{0}-a_{2} is determined to be 0.226±0.060_{stat}±0.013_{syst}, which is in good agreement with theoretical calculation of 0.2644±0.0051.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Ablikim, M; Achasov, M N; Adlarson, P; Albrecht, M; Aliberti, R; Amoroso, A; An, M R; An, Q; Bai, X H; Bai, Y; Bakina, O; Baldini Ferroli, R; Balossino, I; Ban, Y; Batozskaya, V; Becker, D; Begzsuren, K; Berger, N; Bertani, M; Bettoni, D; Bianchi, F; Bloms, J; Bortone, A; Boyko, I; Briere, R A; Brueggemann, A; Cai, H; Cai, X; Calcaterra, A; Cao, G F; Cao, N; Cetin, S A; Chang, J F; Chang, W L; Chelkov, G; Chen, C; Chen, Chao; Chen, G; Chen, H S; Chen, M L; Chen, S J; Chen, S M; Chen, T; Chen, X R; Chen, X T; Chen, Y B; Chen, Z J; Cheng, W S; Chu, X; Cibinetto, G; Cossio, F; Cui, J J; Dai, H L; Dai, J P; Dbeyssi, A; de Boer, R E; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, J; Dong, L Y; Dong, M Y; Dong, X; Du, S X; Egorov, P; Fan, Y L; Fang, J; Fang, S S; Fang, W X; Fang, Y; Farinelli, R; Fava, L; Feldbauer, F; Felici, G; Feng, C Q; Feng, J H; Fischer, K; Fritsch, M; Fritzsch, C; Fu, C D; Gao, H; Gao, Y N; Gao, Yang; Garbolino, S; Garzia, I; Ge, P T; Ge, Z W; Geng, C; Gersabeck, E M; Gilman, A; Goetzen, K; Gong, L; Gong, W X; Gradl, W; Greco, M; Gu, L M; Gu, M H; Gu, Y T; Guan, C Y; Guo, A Q; Guo, L B; Guo, R P; Guo, Y P; Guskov, A; Han, T T; Han, W Y; Hao, X Q; Harris, F A; He, K K; He, K L; Heinsius, F H; Heinz, C H; Heng, Y K; Herold, C; Himmelreich, M; Hou, G Y; Hou, Y R; Hou, Z L; Hu, H M; Hu, J F; Hu, T; Hu, Y; Huang, G S; Huang, K X; Huang, L Q; Huang, L Q; Huang, X T; Huang, Y P; Huang, Z; Hussain, T; Hüsken, N; Imoehl, W; Irshad, M; Jackson, J; Jaeger, S; Janchiv, S; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Ji, Y Y; Jia, Z K; Jiang, H B; Jiang, S S; Jiang, X S; Jiang, Y; Jiao, J B; Jiao, Z; Jin, S; Jin, Y; Jing, M Q; Johansson, T; Kalantar-Nayestanaki, N; Kang, X L; Kang, X S; Kappert, R; Kavatsyuk, M; Ke, B C; Keshk, I K; Khoukaz, A; Kiese, P; Kiuchi, R; Kliemt, R; Koch, L; Kolcu, O B; Kopf, B; Kuemmel, M; Kuessner, M; Kupsc, A; Kühn, W; Lane, J J; Lange, J S; Larin, P; Lavania, A; Lavezzi, L; Lei, Z H; Leithoff, H; Lellmann, M; Lenz, T; Li, C; Li, C; Li, C H; Li, Cheng; Li, D M; Li, F; Li, G; Li, H; Li, H; Li, H B; Li, H J; Li, H N; Li, J Q; Li, J S; Li, J W; Li, Ke; Li, L J; Li, L K; Li, Lei; Li, M H; Li, P R; Li, S X; Li, S Y; Li, T; Li, W D; Li, W G; Li, X H; Li, X L; Li, Xiaoyu; Liang, H; Liang, H; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Liao, L Z; Libby, J; Limphirat, A; Lin, C X; Lin, D X; Lin, T; Liu, B J; Liu, C X; Liu, D; Liu, F H; Liu, Fang; Liu, Feng; Liu, G M; Liu, H; Liu, H B; Liu, H M; Liu, Huanhuan; Liu, Huihui; Liu, J B; Liu, J L; Liu, J Y; Liu, K; Liu, K Y; Liu, Ke; Liu, L; Liu, M H; Liu, P L; Liu, Q; Liu, S B; Liu, T; Liu, W K; Liu, W M; Liu, X; Liu, Y; Liu, Y B; Liu, Z A; Liu, Z Q; Lou, X C; Lu, F X; Lu, H J; Lu, J G; Lu, X L; Lu, Y; Lu, Y P; Lu, Z H; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lyu, X R; Lyu, Y F; Ma, F C; Ma, H L; Ma, L L; Ma, M M; Ma, Q M; Ma, R Q; Ma, R T; Ma, X Y; Ma, Y; Maas, F E; Maggiora, M; Maldaner, S; Malde, S; Malik, Q A; Mangoni, A; Mao, Y J; Mao, Z P; Marcello, S; Meng, Z X; Messchendorp, J G; Mezzadri, G; Miao, H; Min, T J; Mitchell, R E; Mo, X H; Muchnoi, N Yu; Nefedov, Y; Nerling, F; Nikolaev, I B; Ning, Z; Nisar, S; Niu, Y; Olsen, S L; Ouyang, Q; Pacetti, S; Pan, X; Pan, Y; Pathak, A; Pathak, A; Pelizaeus, M; Peng, H P; Peters, K; Pettersson, J; Ping, J L; Ping, R G; Plura, S; Pogodin, S; Prasad, V; Qi, F Z; Qi, H; Qi, H R; Qi, M; Qi, T Y; Qian, S; Qian, W B; Qian, Z; Qiao, C F; Qin, J J; Qin, L Q; Qin, X P; Qin, X S; Qin, Z H; Qiu, J F; Qu, S Q; Qu, S Q; Rashid, K H; Redmer, C F; Ren, K J; Rivetti, A; Rodin, V; Rolo, M; Rong, G; Rosner, Ch; Ruan, S N; Sang, H S; Sarantsev, A; Schelhaas, Y; Schnier, C; Schönning, K; Scodeggio, M; Shan, K Y; Shan, W; Shan, X Y; Shangguan, J F; Shao, L G; Shao, M; Shen, C P; Shen, H F; Shen, X Y; Shi, B-A; Shi, H C; Shi, J Y; Shi, Q Q; Shi, R S; Shi, X; Shi, X D; Song, J J; Song, W M; Song, Y X; Sosio, S; Spataro, S; Stieler, F; Su, K X; Su, P P;
Autori di Ateneo:
AMOROSO Antonio
BIANCHI Fabrizio Umberto
DE MORI Francesca
DESTEFANIS Marco Giovanni Maria
GRECO Michela
MAGGIORA Marco
MARCELLO Simonetta
SPATARO Stefano Giovanni
Link alla scheda completa:
https://iris.unito.it/handle/2318/1946403
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1946403/1216135/PhysRevLett.130.081901.pdf
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
  • Aree Di Ricerca

Aree Di Ricerca

Settori (7)


PE2_2 - Phenomenology of fundamental interactions - (2022)

PE2_3 - Experimental particle physics with accelerators - (2022)

PE2_6 - Nuclear, hadron and heavy ion physics - (2022)

CULTURA, ARTE e CREATIVITA' - Fisica e Beni Culturali

SCIENZE MATEMATICHE, CHIMICHE, FISICHE - Cosmologia e Universo

SCIENZE MATEMATICHE, CHIMICHE, FISICHE - Fisica delle Particelle e dei Nuclei

SCIENZE MATEMATICHE, CHIMICHE, FISICHE - Laboratori innovativi, strumentazione e modellizzazione fisica
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