Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 33: Q10CQ (page 1210)

What lifetime do you expect for an antineutron isolated from normal matter?

Short Answer

Expert verified

The lifetime of an antineutron isolated from normal matter is small and stable without any change.

Step by step solution

01

Antineutron

The antineutron is the antiparticle of the neutron. It only varies from the neutron in that certain of its characteristics have the same magnitude as the neutron but have the opposite sign.

02

Lifetime of Antineutron

The usual short life of an antineutrino is due to its reactive nature with normal matter, as particles and antiparticles tend to annihilate. If an antineutrino were isolated from normal matter, it would behave equivalently to a usual neutrino, so we would expect it to be stable, as there are no lower energy states for it to decay to.

Therefore, the lifetime of antineutron is very short.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

What is the wavelength of an \({\rm{50 - GeV}}\) electron, which is produced at SLAC? This provides an idea of the limit to the detail it can probe.

Why is it easier to see the properties of the c, b, and t quarks in mesons having composition W− or t rather than in baryons having a mixture of quarks, such as udb?

The mass of a theoretical particle that may be associated with the unification of the electroweak and strong forces is\[{\rm{1}}{{\rm{0}}^{{\rm{14}}}}{\rm{ GeV/}}{{\rm{c}}^{\rm{2}}}\]. (a) How many proton masses is this? (b) How many electron masses is this? (This indicates how extremely relativistic the accelerator would have to be in order to make the particle, and how large the relativistic quantity γ would have to be.)

(a) Is the decay \({{\rm{\Lambda }}^{\rm{0}}} \to {\rm{n + }}{{\rm{\pi }}^{\rm{0}}}\) possible considering the appropriate conservation laws? State why or why not.

(b) Write the decay in terms of the quark constituents of the particles.

Plans for an accelerator that produces a secondary beam of \({\rm{K}}\)-mesons to scatter from nuclei, for the purpose of studying the strong force, call for them to have a kinetic energy of \({\rm{500 MeV}}\).

(a) What would the relativistic quantity \(\gamma {\rm{ = }}\frac{{\rm{1}}}{{\sqrt {{\rm{1 - }}{{{{\rm{\nu }}^{\rm{2}}}} \mathord{\left/{\vphantom {{{{\rm{\nu }}^{\rm{2}}}} {{{\rm{c}}^{\rm{2}}}}}} \right. \\} {{{\rm{c}}^{\rm{2}}}}}} }}\) be for these particles?

(b) How long would their average lifetime be in the laboratory?

(c) How far could they travel in this time?
See all solutions

Recommended explanations on Physics Textbooks

Mechanics and Materials

Read Explanation

Torque and Rotational Motion

Read Explanation

Physical Quantities And Units

Read Explanation

Translational Dynamics

Read Explanation

Medical Physics

Read Explanation

Atoms and Radioactivity

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free