Amplitude analysis of B0→D¯0Ds+π− and

R. Aaij¹,

Ahmed Sameh Wagih Abdelmotteleb²,

C. Abellán Beteta³

et al.

Progress in meson-meson scattering at large $N_\text{c}$

“…This possibility is supported by various experimental findings. LHCb has recently reported several scalar tetraquark states: the 𝑇 0 𝑐𝑠0 (2900) in the mass spectrum of 𝐷 − 𝐾 + [8,9], and the 𝑇 ++ 𝑐𝑠0 (2900) and 𝑇 0 𝑐𝑠0 (2900) in the mass spectra of 𝐷 + s 𝜋 + and 𝐷 + s 𝜋 − , respectively [10,11]. All these states have in common that, in a theory with 𝑁 f = 4 degenerate quark flavors, they would have the quantum numbers of the 𝐴𝐴 channel.…”

Prevalence of resistance mutations associated with integrase inhibitors in therapy-naive HIV-positive patients in Baoding, Hebei province, China

“…In the isovector D * K * system, there are two charmed strange partners of the Z c (3900): (i) The first one has quantum numbers 1(0 + ), corresponding to the T a cs0 (2900) observed by LHCb [44,45]. It is a virtual state with the pole close to the D * K * threshold.…”

“…[113], the virtual state pole in two-channel case resides in the {0, 1} sheet. We will simulate the production of T a cs0 (2900) since it was observed in the process B → DD s π [44,45], and the corresponding Feynamn diagrams are shown in Fig. 5.…”

“…Very recently, the LHCb also observed a doubly charged tetraquark T a cs0 (2900) ++ and its neutral partner T a cs0 (2900) 0 within the D + s π + and D + s π − invariant mass distributions in the B decay processes B + → D − D + s π + and B 0 → D0 D + s π − , respectively [44,45]. The spin-parity J P is determined to be 0 + .…”