The first observation of the → (χc1(3872) → J/ψπ+π−)π+π− decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ratio of branching fractions relative to the → (ψ(2S) → J/ψπ+π−)π+π− decay is measured to be [GRAPHICS] where the first uncertainty is statistical and the second systematic. The mass spectrum of the π+π− system recoiling against the χc1(3872) meson exhibits a large contribution from → χc1(3872) (f0(980) → π+π−) decays.

Observation of the Bs0 → χc1(3872)π+π− decay / R. Aaij, A.S.W.A.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2023:7(2023 Jul 11), pp. 84.1-84.25. [10.1007/JHEP07(2023)084]

Observation of the Bs0 → χc1(3872)π+π− decay

C. Mancuso;D. Marangotto;A. Merli;N. Neri;E. Spadaro Norella;G. Tonani;
2023

Abstract

The first observation of the → (χc1(3872) → J/ψπ+π−)π+π− decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ratio of branching fractions relative to the → (ψ(2S) → J/ψπ+π−)π+π− decay is measured to be [GRAPHICS] where the first uncertainty is statistical and the second systematic. The mass spectrum of the π+π− system recoiling against the χc1(3872) meson exhibits a large contribution from → χc1(3872) (f0(980) → π+π−) decays.
B Physics; Hadron-Hadron Scattering; Quarkonium; Spectroscopy;
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
11-lug-2023
Article (author)
File in questo prodotto:
File Dimensione Formato  
JHEP07(2023)084.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Licenza: Creative commons
Dimensione 843.2 kB
Formato Adobe PDF
843.2 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1025731
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 5
  • OpenAlex ND
social impact