The Σ0 baryon, composed of the quark combination uds, is produced through the strong interaction between a π+ meson and a neutron. π+ + n →Σ0 + X What is the quark composition of X?

Multiple choice answers:A: u s-barB: u dC: u d-barD: u d s-barThis question requires you to have memorised:the quark content of a neutron and all the pions,that strangeness number and baryon number are conserved in strong interactions.
Compute strangeness and baryon number of LHS. From this we can deduce that of RHS. These numbers add, so we can write an algebraic equation for the two, knowing the properties of sigma-0 from the question. This allows us to see that A is the only viable answer.

Answered by Physics tutor

8520 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

An object is let in free fall from a platform 20m high above Earth's surface. Describe the event in terms of energy and thus determine the speed of the object when it hits ground. Air resistance is negligible and gravitational acceleration is constant.


How would we calculate the distance covered by a train that starts at rest, then accelerates to 5km/hr in 30 mins then stays at this constant speed for 12 minutes?


Calculate the temperature rise of a mass due to energy transfer over time.


What's the difference between inertial and gravitational mass?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences