Chapter 12, Problem 24P

### Inquiry into Physics

8th Edition
Ostdiek
ISBN: 9781337515863

Chapter
Section

### Inquiry into Physics

8th Edition
Ostdiek
ISBN: 9781337515863
Textbook Problem

# . Distinguish a particle composed of a combination of quarks from one composed of dus quarks in as many ways as you can. Do the same for a dss combination and a combination.

To determine

To distinguish a particle made up of d¯u¯s¯ and dus. And similarly, for the particle made up of d¯s¯s¯ and dss.

Explanation

Introduction:

TheÂ baryonÂ is a type of composite subatomic particle which consists of quarks and antiquarks.

The subatomic particles in baryon category are made up of up, down and strange quark.

Compare the particle composed of dÂ¯uÂ¯sÂ¯ and â€‰dus.

• The baryon number of both combinations is different:

Baryon number for each quark is +13 and for each anti quark is âˆ’13.

So, Baryon number for dÂ¯uÂ¯sÂ¯ combination is âˆ’13âˆ’13âˆ’13=âˆ’1

And Baryon number for dsuâ€‰ combination is +13+13+13=+1

• The strangeness of both combinations is different:

Strangeness number for up, down, antiup and antidown quark is 0 and for strange quark is âˆ’1 and for anti-strange quark is +1

So, strangeness number for dÂ¯uÂ¯sÂ¯ combination is 0+0+1=+1

And strangeness number for dsuâ€‰ combination is 0+0âˆ’1=âˆ’1

Compare the particle composed of dÂ¯sÂ¯sÂ¯ and â€‰dss.

• The baryon number of both combinations is different:

Baryon number for each quark is +13 and for each anti quark is âˆ’13

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