"Theoretically, it is predicted that the mass of the lightest scalar ball (JPC=0++) is between 1~2GeV, but is it possible that the mass of other quantum number balls will be higher than 2GeV?"

"Historically, experimental physicists have done a lot of work in order to find the state of the rubber ball. ”

"In addition to the fact that there are 0++ meson states around 1.5 GeV, which exceed the number predicted by the quark model, it is believed that this may be a mixed state composed of quark hadron and rubber ball. ”

"At the moment, there are no other more definitive conclusions. So, our thinking can be more divergent. ”

"Of course, I don't mean to say that we skip the 1.5GeV range, or the 1~2GeV range. After all, too many theoretical calculations have given results in this interval. ”

"I mean, we can do so much more......"

At the seminar, only Friedman's voice could be heard.

Others, like Chen Zhou, listened and thought at the same time, or only cared about recording Friedman's "golden words".

Eventually, Friedman began to assign the follow-up work.

As for the next experiment, it was put at the end.

After all, this thing is a collider.

Plus this old guy is not young.

So, after this experiment, PEP had to stop for a while.

A year at most, half a year at the earliest.

Therefore, considering all factors, Friedman scheduled the next experiment for April next year.

The time left for PEP maintenance and adjustment is just over half a year.

For this, it was also expected by Chen Zhou.

He was able to catch up with this experiment by chance, but it was already the result of his luck.

The only surprise to Chen Zhou was that Friedman assigned research work to both McIson and Coyle at the seminar.

But he didn't.

Not at all.

This made Chen Zhou feel that he was really here to go through the motions and observe the experiment?

In particular, Cross didn't hear Chen Zhou's name, and looked at Chen Zhou very puzzled.

This made Chen Zhou very depressed and embarrassed.

But Chen Zhou also believes that Friedman will not let himself observe the experiment as simple as that.

I'm also a research assistant......

End of the workshop.

Friedman briefly explained McIson and Coyle, and then left with Chen Zhou.

Looking at the back of Chen Zhou's departure, McIson and Coyle were also confused.

They couldn't figure out what Professor Friedman's purpose was for bringing Chen Zhou over.

On the way back to the hotel, Cross was in charge of driving, and Friedman and Chen Zhou sat in the back.

Cross looked through the rearview mirror and carefully observed Friedman and Chen Zhou's expressions.

Friedman was always indifferent.

Chen Zhou, on the other hand, occasionally showed a confused expression.

Cross drove silently, silently waiting for Friedman's follow-up arrangements.

The car drove away from the SLAC test area, some time later.

Friedman finally turned his head to look at Chen Zhou and asked softly, "Isn't it strange, why didn't I arrange any work for you?"

Chen Zhou nodded slightly: "Yes, Professor, I don't think you brought me here, it's just as simple as familiarizing me with the experimental device." ”

Friedman chuckled softly, but did not explain.

Instead, he said to Cross, who was listening with his ears pricked up, "Let's go to the beach in the Bay Area." ”

Cross hurriedly replied, "Okay, Professor Friedman. ”

SLAC is at Stanford University, which is in the San Francisco Bay Area.

It's not too far from the seaside in the Bay Area.

In terms of distance, it is about two hours by car.

However, by the time the seminar ended, it was already past 6 p.m.

This will go to the beach in the Bay Area again, which is actually a bit blind.

But Cross doesn't say that, others may not know, but he has been with Friedman for so long.

But I know that every time Friedman comes to SLAC, after the experiment, he will go to the beach in the Bay Area to have a look.

Cross also followed Friedman and went there a few times.

It's just that Friedman has been quietly watching the sea and is silent.

Cross had also curiously asked Friedman why.

But Friedman just laughed and said, "The sea breeze can calm him down and think better." ”

Cross was unimpressed.

Along the way, Friedman didn't say a word more.

And Chen Zhou was also patient and didn't ask too much.

What should be said, will always be said.

Cross drove the car and continued south from Stanford University on Highway 1.

This is south of Half Moon Bay.

Speaking of which, there are quite a few attractions on Route 1.

Like the famous check-in mecca, the Pigeon Point Lighthouse is located on Route 1.

Still, Friedman clearly didn't plan to go that far.

After a moment in Cross, Friedman rolled down the window and took a look.

He asked Cross to pull over.

If you can see the sea, you can see Highway 1.

Nothing else.

Not only Cross, but Chen Zhou was also a little strange, why did he stop here.

Friedman didn't explain much to the two of them, just walked to the side of the road and looked out at the Pacific Ocean, which was already in darkness.

Chen Zhou walked up to Friedman, like him, blowing the sea breeze and looking at the Pacific Ocean in the dark.

At this time, Friedman turned and pointed to the faintly lit lighthouse in the distance: "That's the Pigeon Point lighthouse." ”

Chen Zhou looked in the direction of his finger, except for the faint light, the lighthouse itself was completely unclear.

Although this Pigeon Point lighthouse, also known as the Pigeon Lighthouse, is the tallest lighthouse in service on the west coastline of the country.

Friedman put down his hand pointing to the lighthouse and said slowly: "The lighthouse is the hope of ships sailing in the Pacific, don't look at the light is very faint, but it is a reassurance in the hearts of countless sailors. ”

Chen Zhou nodded lightly: "In the long period of navigation, the role of the lighthouse is irreplaceable. ”

When Friedman heard this, he chuckled softly: "If we compare the Pacific Ocean to our particle physics, then the lighthouse is the theory of particle physics." ”

Chen Zhou glanced at Friedman with some surprise, is this Nobel Prize boss about to start?

Friedman continues: "It can also be said that the lighthouse is a combination of theory and experiment, which guides the development of particle physics and indicates danger zones for us. ”

"Professor, is that why you like to come to the beach?" asked Cross aloud.

Friedman nodded, but shook his head again: "I don't like the sea, I don't even know how to swim." However, the presence of a lighthouse in the sea always gives people a sense of peace of mind. ”

Faced with Friedman's answer, Cross was a little confused.

But Chen Zhou was thoughtful.

He felt that Friedman was talking about himself.

The world of particle physics is the dark Pacific Ocean in front of you.

And his job is to illuminate the beacon of the Pacific Ocean.

The sea is not terrible, but the dark sea is terrible.

If they didn't have the faint light of the lighthouse, they wouldn't have been able to see the occasional illuminated sea.

Just like particle physics, this dark world of particles will never be known without that surprise discovery.

Perhaps, this is Friedman's meditation place.

Chen Zhou thought so, and heard Friedman beckoning, "Go back." ”