Consider a collision between a cosmic ray proton and a photon in the cosmic microwave background whose

Question:

Consider a collision between a cosmic ray proton and a photon in the cosmic microwave background whose energy corresponds to the ambient temperature of 2.7 K. Estimate the minimum proton energy required to produce

(a) An e⁺e⁻ pair,

(b) A proton–anti proton pair.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Particle Physics

ISBN: 978-1118912164

4th Edition

Authors: Brian R. Martin, Graham Shaw

See More Books

Question Posted: Dec 13, 2018 11:58 AM

See More Questions

Consider a collision between an x-ray photon of initial energy 50.0keV and an electron at rest, in which the photon is scattered backward and the electron is knocked forward. (a) What is the energy...
Consider a collision between two objects of different masses M,m moving in one dimension with initial speeds V, v. In the center-of-mass frame, the total momentum is zero before and after the...
In a high-energy collision between a cosmic-ray particle and a particle near the top of Earth's atmosphere, 120 km above sea level, a pion is created. The pion has a total energy E of 1.35 x 105 MeV...
For the following project please follow the below guidelines unless otherwise stated by your instructor. Worth 20% of the total grade. Read and follow all instructions in order to receive full...
Product innovation includes designing innovative products and getting them to market quickly. In a world where the design, production, and consumption may be on different continents, describe how an...
Ginny Bellis is discussing the advantages of the effective interest method of bond amortization with her accounting staff. What do you think Ginny is saying?
Discuss to what extent could a computerised knowledge system be useful in managing that knowledge.
The members of a systems development project team have gone out for lunch together, and as often happens, the conversation has turned to work. The team has been working on the development of the user...
During Year 1, Hardy Merchandising Company purchased $21,000 of inventory on account. Hardy sold inventory on account that cost $15.800 for $23,600. Cash payments on accounts payable were $13.100....
Dwight Donovan, the president of Donovan Enterprises, is considering two investment opportunities. Because of limited resources, he will be able to invest in only one of them. Project A is to...
In the text, it is stated that if dark matter consisted entirely of WIMPs of mass 60 GeV/c 2 , the number of WIMPs passing through each square centimetre of the Earths surface would be of order 10 5...
Consider a star moving with velocity in a circular orbit of radius R about the centre of a spiral galaxy. Calculate the dependence of on R for the following extreme cases. (a) The total mass of the...
a. Evaluate x + 2 for x = 4, x = 5, and x = 6. b. Evaluate 2x for x = 4, x = 5, and x = 6. c. A student says that the expressions x + 2 and 2x are the same thing. What would you tell the student?
Your company has a Microsoft 365 E5 subscription. You need to review the Advanced Analysis tab on emails detected by Microsoft Defender for Office 365. What type of threat policy should you...
(a) The Bright company is evaluating a project which will cost Rs 1,00,000 and will have no salvage value at the end of its 5-year life. The project will save costs of Rs. 40,000 a year. The company...
Dispatcher Collins is retiring after 30 years on the job. If each of the 38 officers in the department contributes $9 for a retirement gift, what is the total amount that could be spent on this gift
XYZ CO Adjusted Trial Balance Debit Credit Cash Accounts receivable Office supplies Prepaid rent $ 40 850 1 490 1 530 4 000 Office equipment Accumulated Depreciation Accounts payable 7 000 $ 450 1...
What positive outcomes could result from implementing job enlargement, job rotation, and job enrichment in an organization with which you are familiar? What objections or obstacles might be...
Identical point electric dipoles are placed at the vertices of the regular polyhedra shown below. All the dipoles are parallel but the direction they point is arbitrary. Show that the electric field...
The bookkeeper for Riley, Inc., made the following errors: a. A cash purchase of supplies of $357 was recorded as a debit to Supplies for $375 and a credit to Cash of $375. b. A cash sale of $3,154...
(a) Give an example of a vertical motion with a positive velocity and a negative acceleration. (b) Give an example of a vertical motion with a negative velocity and a negative acceleration?
A ball is thrown straight up into the air. At each of the following instants, is the magnitude of the balls acceleration greater than g, equal to g, less than g, or 0? Explain. a. Just after leaving...
A rock is thrown (not dropped) straight down from a bridge into the river below. At each of the following instants, is the magnitude of the rocks acceleration greater than g, equal to g, less than g,...
Selected comparative financial statement data for DAS inc. Balance Sheet (En milliers de dollars) 2017 2018 Assets Assets CT - Cash 41.63 47.5 - Accounts Receivable 64.2 72.6 - inventories 969.7...
please help!! One chance at turning in!!! 16 rows! I'd highly appreicate it I am unsure what information you need... I provided all Current Attempt in Progress Mike Greenberg opened Grouper Window...
Blue Ridge Marketing Inc. manufactures two products, A and B . Presently, the company uses a single plantwide factory overhead rate for allocating overhead to products. However, management is...

Consider a collision between a cosmic ray proton and a photon in the cosmic microwave background whose

Question:

Step by Step Answer:

The energy of the photon is k 32k B T where k B is Boltzmanns constant k B 8617 10 11 MeVK 1 giving ...View the full answer

Particle Physics

Students also viewed these Physics questions