Final answer:
The negative sigma baryon's quark structure is dds, which gives it a charge of -1. The sigma-zero's decay into a lambda-zero and photon indicates it is an excited state of lambda-zero. Quark arrangements are regulated by the Pauli exclusion principle, which is crucial for the stability and resulting particles in baryon decays.
Step-by-step explanation:
The quark structure of a negative sigma, or specifically the Σ- baryon, consists of two down quarks (d) and one strange quark (s), symbolically represented as dds. This composition gives the Σ- a total charge of -1. The concept of quarks is fundamental to the Standard Model of particle physics, which explains the behavior of the building blocks of matter.
In the case of the sigma-zero particle (Σ0) decaying into a lambda-zero particle (Λ0) and a photon (γ), it implies that the Σ0 is an excited state of the Λ0. This is because the quark composition of Σ0 (uds) is the same as that of Λ0 (uds), but Σ0 has a higher mass due to its higher energy level or excitation state.
An understanding of the Pauli exclusion principle is essential when discussing quark configurations, as no two quarks in the same quantum state can exist within a baryon. Also, a neutron decay can be understood in terms of quark flavors changing, such as a down quark transforming into an up quark and producing a proton, a beta particle (β-), and an electron neutrino (νe).