Study of excited Λb 0 states decaying to Λb 0π+π in proton-proton collisions at s=13TeV

The CMS collaboration

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

21 Цитирования (Scopus)


A study of excited Λb 0 baryons is reported, based on a data sample collected in 2016–2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb 0 states: Λb 0(5912)0, Λb 0(5920)0, Λb 0(6146)0, and Λb 0(6152)0 in the Λb 0π+π mass spectrum is confirmed, and their masses are measured. The Λb 0π+π mass distribution exhibits a broad excess of events in the region of 6040–6100 MeV, whose origin cannot be discerned with the present data.

Язык оригиналаанглийский
Номер статьи135345
Число страниц22
ЖурналPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
СостояниеОпубликовано - 10 апр 2020


Подробные сведения о темах исследования «Study of excited Λ<sub>b</sub> <sup>0</sup> states decaying to Λ<sub>b</sub> <sup>0</sup>π<sup>+</sup>π<sup>−</sup> in proton-proton collisions at s=13TeV». Вместе они формируют уникальный семантический отпечаток (fingerprint).