thiagotomei

Your assumption is wrong. Consider, for instance, the LHC dataset, which reach O(EB). Just bringing the data into disks, loading into RAM in chunks, doing the data analysis and reduction, and doing the statistical analyses and fits, is a monumental task.

Consider now the work needed to operate the detectors, acquire the data, do calibrations and validations.

Notwithstanding designing, building and commissioning the detectors.

Please don’t assume lab automation.

I think this description is essentially correct.

The ATLAS-CMS joint Higgs boson mass measurement paper has close to 6000 authors: https://doi.org/10.1103/PhysRevLett.114.191803

I think the final COVID consortium report has something like 30k authors.

But it is not a coincidence. Light — the EM field waves — propagates at causality speed because the EM field respects a particular property of the universe, the so-called gauge symmetry. That is intimately connected to the fact that the photobs has no mass.

Other similar particles, like the W and Z bosons, are manifestations of the weak field. Since that field breaks the symmetry, those particles have mass and move slower.

BTW, that symmetry breaking is the very same one that physicists talk about when we discuss the Higgs boson.

It’s exactly as in Mario Kart 64! Remember, heavy characters have the higher top speed, but light characters have the higher acceleration!

If I recall correctly, one of the first iterations of the prototype Playstation was exactly this. The original Playstation started as a collaboration between Nintendo and Sony.

A small nitpick: yes, we only needed 1 LHC to confirm the existence of the Higgs boson, BUT we made sure to have two experiments (ATLAS and CMS) looking for it. As far as I know, every modern high energy physics accelerator has had two (or more) sister experiments to cross-check each others!

Of course, it is not a perfect analogy, since the two experiments are not replicas. They try to address the same physics cases, but they were designed, built and are operated in a completely independent way.

This is a common hard-libertarian talking point.

Consider point 13.6 of Scott Alexander's (Slate Star Codex) Non-Libertarian FAQ:

https://slatestarcodex.com/2017/02/22/repost-the-non-liberta...

If you assume that "individual property earned through voluntary exchange" is the ultimate value to be upheld, you may end up having to defend a hellscape world. You need at least to temper it with something along the lines of the Lockean proviso.

They give a 30-day free trial, it seems (last item in the 5-reasons list):

"Triplicate has no demo version, but I do offer a 30-day return option: if the fonts aren’t your style, you can cancel your license for a refund."

"CERN found Higgs - which was proposed decades before CERN was built." ---> This is factually incorrect.

   * CERN: founded 1954, as a lab for nuclear physics

   * PRL electroweak symmetry breaking papers: 1964

If people were dying in troves of a disease (...) every effort would be put on saving them, right? How come some deaths are considered "fine", but others aren't?

No. Just No.

Let longevity come. Let immortality come. Let us live forever, sail the heavens, and travel to every world, every star, every galaxy, everywhere.

Disclaimer: I am Brazilian and a raving anti-Bolsonaro protester.

If we follow that line of thought, we will always end up at the following conundrum: the planet cannot support the "affluent Western" lifestyle -- think typical Bay Area HN-er -- for all 7 billion humans (as far as I remember, I don't have the sources for that).

Who is going to draw the golden ticket?

I agree that Bolsonaro is an opportunist (like many politicians), and he spews a lot of abominable statements. Unfortunately, his views align with a large section of Brazilian society. A society that was, from the beginning, built on layers upon layers of opportunism, manorialism and slavery. A society that cannot condemn its slave trade past, nor its many dictatorships.

Bottom line -- yes, I think you are in position to judge us.

Experiments at CERN use it. ATLAS has clocked 260k meetings, whilst CMS had around 130k.

In Brazil, there is an official residence for the Pres. and their family, but they could choose to live in some other official building. Pres. Collor (1991--1992) lived in "Casa da Dinda", instead if "Palacio da Alvorada".

Even if they cannot get all the data back, I suppose they could do a preliminary analysis onboard and decide what to send back.

It is, in a very broad sense, the same problem we have at the LHC. There is just too much data taken for the available storage and bandwidth.

As a matter of fact, this (merchants giving a discount for cash transactions) used to be illegal in Brazil. It recently became legal, but I haven't seen much evidence of changes.

At least in my field (high energy physics in the LHC), null findings are routinely published. Everybody who is searching for physics beyond the standard model publishes their null findings left and right.

But what does "measuring more directly anyway" mean if you're trying to measure something that may or may not exist?

For instance, in searches for new phenomena in high-energy physics, one usually puts an upper limit on deviations from the expectation of "known physics" (i.e., standard model). That essentially translates to statements like "if this particle exists, its mass should be higher than X TeV, or else we would have seen it already in our data". Of course, in reality, the particle probably does not exist, so you cannot really measure its mass!

Quantum mechanics is not based on special relativity at all. In fact, you can show that you can write Hamilton-Jacobi's equation (purely Classical Mechanics) as a limiting case of Schrodinger's equation.

It is true that QM came about initially as a problem with the quantization of the electromagnetic field, but that was a bit of an accident.

Me

Doctors will also see you after the apppointed time.

That is not correct.

* Italy won in 1934 and 1938

* Brazil won in 1958 and 1962

CMS physicist here! As our ATLAS colleagues, we also use boosted decision trees extensively in our analysis, as well as the so-called Matrix Element Method -- a way to combine the knowledge of the differential theoretical cross-sections for the signal and background processes with our knowledge of the experimental resolution of our detectors. More details are available in [1].

However, in CMS we have recently started using Deep Neural Networks. These are used for the separation of signal and background events in the "single-lepton channel" of the search, i.e., the search where the Higgs boson decays to two bottom quarks and the top quarks decay in such a way that at least one electron or muon is present in the final state. Again, more details here: [2]

[1] http://arxiv.org/abs/1803.05485

[2] http://cms-results.web.cern.ch/cms-results/public-results/pr...

That is not true, at least for CMS. All the RAW data taken in pp collisions during 2011 and 2012 - ie the Higgs boson discovery dataset - has been saved in tape. As a general rule, we never delete RAW collision data that actually make it into permanent storage. Of course, data that didn't pass the real-time selection to be recorded in the first place is irrevocably lost.

Hi, member of CMS collaboration here. The author list is ordered: by country name (in English), by town name, by institute name, by author name, by author first name. So, as of this writing, the list starts with authors from Armenia.

This applies only to more or less "central" locations. Buses to the city outskirts are still infrequent and, during rush hour, will still be stuck in traffic.

Metro is good, but it is nowhere near 90 seconds - specially with the long stops in between stations.