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Fresh Evidence Supports Higgs Boson Discovery

craklyn Re:More than one Higgs Boson? (42 comments)

This is kind of like if you're walking through the woods and you discover piles of bear shit as you go. The bear shit implies there's at least one bear in the woods, but it does not preclude that there could be multiple bears responsible for it.

The Higgs field is a solution to the question of why some fundamental particles have mass. Theoretically, such a field is well-motivated. If such a field exists, it implies there is at least one massive, spin-zero particle that we have decided to call the Higgs boson. There are various extensions to our models, such as the so-called "Higgs two-doublet model" which SUSY extends, where more than one Higgs exists.

about 3 months ago

Fresh Evidence Supports Higgs Boson Discovery

craklyn Re:More than one Higgs Boson? (42 comments)

One cannot measure a Higgs boson directly since it promptly decays. Consequently, it's necessary to identify particles it decays into.

Quarks and leptons are measurable objects in detectors, but quarks and leptons are also created in other processes that are much more likely to occur. This creates a large background which must be subtracted from the Higgs boson decay's signal. These channels are harder to measure due to the significant background.

The other channels of Higgs decay that were identified first included Higgs bosons decaying into gauge bosons. The probability of this occuring is not so large, but such decays can result in 4 leptons (e.g. two electrons plus two muons, four electrons, or four muons), and that has a very clean, measurable signal with very low background.

about 3 months ago

What Was the Greatest Age For Indie Games?

craklyn Re:I'd say "right now". And it's getting better. (92 comments)

Faster than Light Binding of Isaac Super Meatboy Kerbal Space Program Minecraft Rogue Legacy Fez Bastion (developed by an indie team, published by a big name) Papers, Please The Stanley Parable World of Goo Little Inferno

about 4 months ago

CERN Wants a New Particle Collider Three Times Larger Than the LHC

craklyn Re: Repeat story (238 comments)

The LHC and its major experiments were built with the goal of discovering the Higgs Boson or excluding it, and it has secondary goals to search for new physics such as SUSY. We built the appropriate machine for accomplishing that goal. If we had the LHC in the 1950's, we would have had a few problems: 1) Astronomical cost to build, 2) Insufficient computational power to analyze the results, and 3) No theoretical framework motivating a search for a scalar particle in a certain mass range. In short, it would be building something too expensive that would be unusable and it would be given to people who wouldn't know what to do with it even if they could use it.

about 7 months ago

LHC Discovers New Particle That Looks Like the Higgs Boson

craklyn Re:huh (396 comments)

In 2012, it's 8 TeV by the way. Hopefully 14 TeV in 2014.

It's a little more complicated than looking at the total center-of-mass energy and saying we can discovery any particle up to the max. A single proton is made of multiple constituents, and a proton incoming with 3.5 TeV (or 4 or 7) of energy represents the total energy of that system. When two protons interact, it's actually two constituents which are interacting, and they will have some fraction of the proton's energy. So typically the probability of producing particles drops considerably as you look for more massive particles.

That said, the central sentiment of your message is correct. There is a lot of potential signals that remain to be investigated. There could even be particles found with considerably less mass than the Higgs, but which have an unusual decay signature which we haven't been sensitive to yet.

more than 2 years ago

Texas Scientists Regret Loss of Higgs Boson Quest

craklyn Re:Now what? (652 comments)

What happens next is we study this particle. We want to know if it behaves as is predicted by the standard model, or if it's something different from what we expect. This includes measuring its cross section (the probability of it being created in collision) and its branching ratio (the probability of it decaying to each thing its able to decay to).

Matt Strassler (a theoretical physicist) describes the general roadmap in his blog post here.

Particle physics results are necessarily esoteric. What do we do with experimental knowledge? We use this knowledge to disprove plausible theory and to constrain future theory. Theory is similarly used to give direction for new experiments.

more than 2 years ago

Netflix Loses 800,000 Subscribers After Qwikster Gaffe

craklyn Re:Disruptive Innovation? (325 comments)

The innovation is fine. The problem is that Netflix' leadership has been unable to communicate with its customers in an intelligent way. They need to tuck us into bed, and tell a bed time story which ends "and then you bought our new product and lived happily ever after." This is what Apple does when they innovate.

Instead, you can look at the Quickster announcement. First paragraph: "I messed up. I owe everyone an explanation." Second paragraph: Talks about how they treated their customers like idiots by saying that they were lowering prices when the prices increased. Paragraph ten: Announce Qwikster.

Why even combine these two messages into a single product announcement?

more than 2 years ago

Sports Bars Changing Channels For Video Gamers

craklyn Re:And lose all their normal sports customers? (351 comments)

I was present for the opening night in Chao Bistro in Seattle. Their restaurant/bar is already naturally separated into two sections, so they had Starcraft 2 in one section and the normal bar in the other. The bar owners tend to run these events on traditionally slow nights, so there's room for normal patrons and gamer patrons at one time.

about 3 years ago

Bill Gates On Energy

craklyn Re:Graft (474 comments)

Why does a subsidy create more jobs than basic research? Is it because a subsidy only slightly covers the cost to produce a good and the purchaser pays the rest, while a basic research grant must cover 100% of the wages?

more than 3 years ago

Will the LHC Smash Supersymmetry?

craklyn Re:Naive Question (196 comments)

Fundamental science's goal is to understand how the universe we live in behaves. We accumulate evidence about how the universe works (called "measurements"), and use it to rule out incorrect possibilities.

It's the job of others, such as scientists who don't work on fundamental research (called "engineers"), to decide what we can do with the universe we live in.

more than 3 years ago

IAEA Forms Nuclear Fuel Bank

craklyn Re:Well sure (224 comments)

According to the World Nuclear Association:

All nuclear reactors, at least in the west, are insured. Not only so, they are a sought-after risk because of their high engineering and operational standards. Beyond the cover for individual plants there are national and international pooling arrangements for comprehensive cover.

Perhaps the World Nuclear Association has some bias or they're refering to something different than you are. It's hard to evaluate that since you don't include a source, though.

more than 3 years ago

Biggest Detector To Look For Gravitational Waves

craklyn Re:Unlike the "Galaxy sized detector" (109 comments)

It's pretty disingenuous to link the cost of a detector to its size, as though size indicates scientific merit.

But maybe I'm just bias because I have studied atoms (0.5x10^-10 meter scale) on a graduate student stipend ($20k per year). This cost my university a measly $400,000,000,000,000 per meter per year.

more than 4 years ago

UK University Researchers Must Make Data Available

craklyn Re:Good and bad (352 comments)

For many academic scientists (i.e. professors, post-docs, graduate students), a part of their pay is the ability to publish their research findings. It takes long thought and work to devise and carry out experiments which gather pertinent data. It's not unreasonable to allow some time for these scientists to analyze their data and properly understand it.
If you mandate all data be immediately made public, the researcher can be "scooped" by anyone. This is bad for science because it removes the incentive to actually gather the data. This is one argument for why data may be kept internal, at least for a while.

more than 4 years ago

Europe's LHC To Run At Half-Energy Through 2011

craklyn Re:Luminosity more important than energy (194 comments)

According to my professor (who is very involved in the LHC) the first LHC run will be collecting an integrated luminoscity of 1 fb^-1.

Another professor mentioned today that by the end of the Tevatron's life (in a couple years), it will have collected 12 fb^-1. This is over it's 10-ish year life span.

At this point, some may wonder why the LHC is unable to keep pace with the Tevatron, the old toy. These machines are very complicated, and apparently don't work nearly to maximum efficiency out of the box. Check out this plot of the amount of data collected at the tevatron versus year. The slope is rising continuously, as they improve their beam and detectors to handle more collisions:

Tevatron Integrated Luminosity

more than 4 years ago

The Lancet Recants Study Linking Autism To Vaccine

craklyn Re:OP's Qualifications? (590 comments)

The medical journal is denouncing that particular particular study. They are presumably not discounting all studies, past and future, on the issue.

more than 4 years ago

The Lancet Recants Study Linking Autism To Vaccine

craklyn OP's Qualifications? (590 comments)

I don't know if autism is correlated with vaccines. I am not familiar with modern medicine. But my instinct tells me that if someone on the internet tells me how I should feel about the science, I would like to see his qualifications.

more than 4 years ago

Larry & Sergey To Cash In $5.5B of Google Chips

craklyn Re:Why do I care about Google contributing to SS? (339 comments)

If you combine their Social Security tax with their federal income tax, these two men are paying quite progressive taxes overall.

more than 4 years ago

I'd prefer to allocate my work hours ...

craklyn Re:9 nines (287 comments)

This thread, paraphrased:

I think taxes aren't fair because I should be taxed less and others should be taxed more.

more than 3 years ago

High-Temp Superconductors To Connect Power Grids

craklyn Re:I love slashdot. (332 comments)

But how much energy is 5 GW in houses supplied with electricity?

more than 4 years ago


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