Studies of Bs2∗ (5840)0 and B s 1(5830) 0 mesons including the observation of the Bs2∗ (5840)0B0KS0 decay in proton-proton collisions at √s=8TeV

CMS Collaboration, Shimaa Abu Zeid, Freya Blekman, Jorgen D'Hondt, Isabelle Helena De Bruyn, Kevin Deroover, Steven Lowette, Seth Moortgat, Lieselotte Moreels, Quentin Python, Kirill Skovpen, Stefaan Tavernier, Walter Van Doninck, Petra Van Mulders, Isis Marina Van Parijs, Jarne De Clercq, Denys Lontkovskyi, Giannis Flouris, Ivan Marchesini

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16 Citaten (Scopus)

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Measurements of Bs2∗(5840)0 and B s 1(5830) 0 mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of [InlineEquation not available: see fulltext.], collected with the CMS detector at the LHC at a centre-of-mass energy of 8TeV. The analysis studies P-wave Bs0 meson decays into B (∗) +K - and B(∗)0KS0, where the B + and B 0 mesons are identified using the decays B +→ J / ψK + and B 0→ J / ψK (892) 0. The masses of the P-wave Bs0 meson states are measured and the natural width of the Bs2∗(5840)0 state is determined. The first measurement of the mass difference between the charged and neutral B mesons is also presented. The Bs2∗(5840)0 decay to B0KS0 is observed, together with a measurement of its branching fraction relative to the Bs2∗(5840)0→B+K- decay.

Originele taal-2English
Artikelnummer939
Aantal pagina's26
TijdschriftThe European Physical Journal C
Volume78
Nummer van het tijdschrift11
DOI's
StatusPublished - 15 nov 2018

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