Question: Using four-vectors, show that an isolated photon cannot decay to an electron-positron pair (photon decays to e e-), and that energy-momentum conservation allows photons to

Using four-vectors, show that an isolated photon cannot decay to an electron-positron pair (photon decays to e e-), and that energy-momentum conservation allows photons to "convert" to an electron-positron pair only near another object

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

A heat exchanger used to heat a glycol solution with a hot oil is known to exhibit first-order-plus-time-delay behavior, G 1 (s) = T?(s)/Q?(s), where r is the outlet temperature deviation and Q? is...

Let be two four-vectors. Show that the scalar product is a Lorentz invariant scalar. It will be convenient to write a = a + a and similarly for b. = (a, a4) and b = (b, b4)

PLEASE HELP WITH THIS NETWORKING LAB PRACTISE Addressino Table Part 1: Open the prepared Packet I racer simulation file (from Part I). Part 2: Configure Single-Area OSPFv2 (Ignore all the red font...

ID Salary 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 59.3 26.5 34.1 56.3 46.8 79.5 41.2 23.6 76 22.7 23.8 62.9 41.4 22.3 23.1 46.6 67.6 33.8 24 35 75.2 51.5 22.1 55.4 24.9 24.3 42.9 76.6 75.4...

Cisco Networking Academy Mind Wide Open Lab 1.5.2: Basic Router Configuration Topology Diagram 192.168.1.0/24 192.168.2.0/24 192.168.3.0/24 PC1 Fa0/0 S0/0/0 DCE S0/0/0 Fa0/0 PC2 ----- R1 R2...

ID Salary Compa- Midpoint ratio Age Performance Service Gender Rating Raise Degree Gender Grade 1 Copy Employee Data set to this page. The ongoing question that the weekly assignments will focus on...

can someone help me solve this? the data and informatiin is there for JP Morgan Chase with all the instructions. I sent the images in parts. it should be more clear now. unless you want me to email...

Set Week Three During this week, we will look at ways of testing multiple (more than two) data samples at the same time. We will continue to use the data and assignment file that we opened in Week 2,...

26 8.000 175.000 Chapter 2 WAC220-HCT Asume over/under applies to ending inventory horax Capacity/hes 100D Huaget/rs O besifor TOM Budgeted overta pencing 20 9.00 Raw Encing is before over/under...

Chapter 8 Homework Use the MSU Human Resources database you created to do Chapter 7 homework. If you don t have it , you can make the database using MSU _ HR _ MySQL script provided. Before answering...

The following formula has been suggested as an alternate to Eq. (9.86) to relate upstream Mach number to the oblique shock wave angle β and turning angle θ: Can you prove or disprove this...

Consider a computer system that contains an I/O module controlling a simple keyboard/printer Teletype. The following registers are contained in the CPU and connected directly to the system bus: INPR:...

Entrepreneurs can examine business risk by considering three threats to business success. Those three threats are: Multiple select question. threats to the profit margin. threats to sales generation...

Rayon Co. uses the percentage of sales approach to record bad debt expense for its monthly financial statements and the percentage of receivables approach for its year-end financial statements. Rayon...

The following ratios are available for Satellite Mechanical: Instructions (a) Calculate the collection period, days sales in inventory, and operating cycle in days for each year. (b) Has Satellite...

Presented here is selected financial information (in millions) from the 2014 financial statements of Rogers Communications Inc. and Shaw Communications Inc.: Instructions (a) Calculate the...

Jensen Company's general ledger included the following selected accounts (in thousands) at December 31, 2017: Accounts payable.........................................$1,077.3 Accounts...

Schneider Company has a May 31 fiscal year end and adjusts accounts annually. Selected transactions in the year included the following: Jan. 2 Sold $24,000 of merchandise to Sapounas Company, terms...

1. Briefly describe Project Identification. 2. The initiating project life cycle starts with recognizing a need, problem or opportunity. Proje cts are identified in many ways such as; give an example...

3. What is the difference between perception and assessment of a particular everyday situation? Give at least three examples.

7. One or other combination of 16.

1. Discuss the following statements: a) Mastery is not the same as understanding. b) Being bigger than is not the same as being the thing that is bigger. c) The difference between order and disorder...