thiagotomei

7 ms·

1.
by thiagotomei 1mo ago
I think this description is essentially correct.
2.
by thiagotomei 1mo ago
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.
3.
by thiagotomei 2y ago
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 pho
4.
by thiagotomei 2y ago
It’s exactly as in Mario Kart 64! Remember, heavy characters have the higher top speed, but light characters have the higher acceleration !
5.
by thiagotomei 3y ago
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.
6.
by thiagotomei 5y ago
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
7.
by thiagotomei 6y ago
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 as
8.
by thiagotomei 6y ago
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."
9.
by thiagotomei 6y ago
"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
10.
by thiagotomei 6y ago
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 l
11.
by thiagotomei 7y ago
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
12.
by thiagotomei 8y ago
Experiments at CERN use it. ATLAS has clocked 260k meetings, whilst CMS had around 130k.
13.
by thiagotomei 8y ago
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&quot
14.
by thiagotomei 8y ago
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 a
15.
by thiagotomei 8y ago
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.
16.
by thiagotomei 8y ago
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.
17.
by thiagotomei 8y ago
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 devia
18.
by thiagotomei 8y ago
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 ab
19.
by thiagotomei 8y ago
Me
20.
by thiagotomei 8y ago
Doctors will also see you after the apppointed time.
21.
by thiagotomei 8y ago
That is not correct. * Italy won in 1934 and 1938 * Brazil won in 1958 and 1962
22.
by thiagotomei 8y ago
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
23.
by thiagotomei 8y ago
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 in
24.
by thiagotomei 9y ago
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.
25.
by thiagotomei 10y ago
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 l