Observation of a new \chi_b state at ATLAS and a new \Xi_b baryon at CMS
Andrew Chisholm (for the ATLAS Collaboration, for the CMS, Collaboration)
TL;DR
This paper reports the discovery of a new state ((3P)) at ATLAS and a new baryon (*) at CMS, advancing understanding of heavy hadron spectroscopy at the LHC.
Contribution
It presents the first observation of the (3P) state and a new baryon, providing new insights into heavy quarkonium and baryon structures.
Findings
Observation of (3P) state in radiative transitions
Discovery of a new baryon decaying to -+",
Abstract
Two recent observations of new b hadrons in pp collisions at \sqrt{s} = 7 TeV at the Large Hadron Collider (LHC) are presented. The ATLAS collaboration has observed a new state in radiative transitions to \Upsilon(1S) and \Upsilon(2S) and interprets this as the first observation of the \chi_b(3P) states. The CMS collaboration has observed a new b baryon decaying to \Xi_b-\pi+ (plus charge conjugates). This is interpreted as a neutral J^P = 3/2^+ \Xi_b* baryon.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions