Publication

Study of D-sJ decays to (D+KS0) and (DK+)-K-0 final states in pp collisions

Abstract

A study of (D+KS0) and (DK+)-K-0 final states is performed in a sample of 1.0 fb(-1) of p p collision data collected at a centre-of-mass energy of root s = 7TeV with the LHCb detector. We confirm the existence of the D*(s1) (2700)(+) and D*(sJ) (2860) + excited states and measure their masses and widths to be m(D*(s1) (2700)(+)) = 2709.2 +/- 1.9(stat) +/- 4.5(syst) MeV = c(2), Gamma(D*(s1) (2700)(+)) = 115.8 +/- 7.3(stat) +/- 12.1(syst) MeV = c(2), m(D*(s1) (2700)(+)) = 2866.1 +/- 1.0(stat) +/- 6.3(syst) MeV = c(2), Gamma(D*(s1) (2700)(+)) = 69.9 +/- 3.2(stat) +/- 6.6(syst) MeV = c(2).

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Related concepts (6)

LHCb experiment

The LHCb (Large Hadron Collider beauty) experiment is a particle physics detector experiment collecting data at the Large Hadron Collider at CERN. LHCb is a specialized b-physics experiment, designed primarily to measure the parameters of CP violation in the interactions of b-hadrons (heavy particles containing a bottom quark). Such studies can help to explain the matter-antimatter asymmetry of the Universe. The detector is also able to perform measurements of production cross sections, exotic hadron spectroscopy, charm physics and electroweak physics in the forward region.

Particle detector

In experimental and applied particle physics, nuclear physics, and nuclear engineering, a particle detector, also known as a radiation detector, is a device used to detect, track, and/or identify ionizing particles, such as those produced by nuclear decay, cosmic radiation, or reactions in a particle accelerator. Detectors can measure the particle energy and other attributes such as momentum, spin, charge, particle type, in addition to merely registering the presence of the particle.

Kaon

In particle physics, a kaon (ˈkeɪ.ɒn), also called a K meson and denoted _Kaon, is any of a group of four mesons distinguished by a quantum number called strangeness. In the quark model they are understood to be bound states of a strange quark (or antiquark) and an up or down antiquark (or quark). Kaons have proved to be a copious source of information on the nature of fundamental interactions since their discovery in cosmic rays in 1947.

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