Quiz time - Question 2

19:41 Unknown 9 Comments

Time for the second (slightly biased) trivia question!

After the first round the scores are:
Selma - 8
Brigitta - 5
Hans - 3
Eelke - 1
Kees - 1
See my reply in the last quiz post.

The next question, again for 10 points, concerns this Feynman diagram (the bottom one):



For 5 points: Estimate the probability for this process to occur at LHC energies.

For 1-5 points: Describe the consequences of such a process, e.g. when it would be detected in ATLAS.

9 opmerkingen:

  1. Hoera nog een quiz, en hoewel ik geen idee heb waar het over gaat:
    Vraag 1: De kans dat een olifantje zo groot wordt in verhouding tot de aarde lijkt me 0%
    Vraag 2: Mocht het wel gebeuren en mocht Atlas het zien, dan komen er wereldwijd veel doden en gewonden door het stampen van het Olifantje en wordt hij uiteindelijk met een atoombom neergeschoten om erger te voorkomen.

    :grin:

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  2. As a side note, the above transparency were shown to me this morning, in the second of a lecture series called "Beyond the Standard Model". Googling of this lecture is strictly forbidden.

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  3. Natuurlijk is een Olifant van dat formaat "Beyond the Standard Model". Dûh..

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  4. Because I'm not as original as Brigitta in giving answers, I used Wikipedia to read a bit on Higgs bosons (no googling of lectures! :-) )after thinking of gravitons colliding to create black holes with the mass of an average elephant. The diagram looks the same as the diagram displaying the decay of a Higgs boson to a top - anti-top quark pair. Then there is the diagram at the top of the slide and the little elephant...
    Since it is a lecture beyond the standard model, the proces is a new decay process for the Higgs boson to decay into a new particle, the hypothetical and very heavy elephant-particle. The chances of this happening at LHC energies is very small, in the order of 10^-30. If this happens, there is some work left for both theoretical and experimental physisists for the comming years, because then there is a new particle which has to be studied.

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  5. I haven't seen a transparent on an overhead projector for over ten years. I thought CERN was about technology. Shame on them! A good beamer (not the cars) costs next to nothing.

    Now the questions. Well, I haven't got the foggiest... Still I wouldn't be me without some more or probably less educated guesses.

    There is no such thing as prohibiting the use of Google. Even though Google is evil and Micro$oft$ Bing will be even more evil.

    The chance of this happening is 50%, like every chance in this world. I would like to stress you be very carefull with the small elephants as we don't have too many of those.

    As far as what will happen when ATLAS catches the result: Inge will make a major briljant self-learning heuristical computational statistical analysis will great results and her attribution to science will be honoured in many ways, one of which the Nobel prize and among them also general sponsorship of several miljons of Euro's, which will make her decide to give me a Lexus for my next birthday, which I will appreciate a lot.

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  6. Euh, yeah.

    One word on the overhead projector. Of course there's about all the technology you can imagine in that room. Which is CERN's main auditorium. With glass boxes for interpreters, microphones and camera's everywhere, technicians running around, etc. But do you really want to do have your mathematics and quick sketches on powerpoint slides? With fancy animations and pictures (what, a photo of a fermion?) or so? Well I don't. And the transparencies are better readable than the blackboard. So what's your point exactly? ;-)

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  7. Sorry, got a bit carried away, I guess I like Microsoft as much as you do ;-)

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  8. Ik heb de oplossing.

    Ik denk dat het een circus olifant is die op een grote bal loopt die om zijn as draait. Dat zal dus wel ergens hoog in de piste zijn. Omdat hij heel snel loopt gaat hij op de bal stuiteren. Dat doet hij met eem amplitude en een frequentie uit het Feynman diagram. Op een gegeven moment vallen olifant en bal naar beneden (ophanging niet sterk genoeg?). Ze vallen nu zo hard bovenop/tegen elkaar dat ze beiden -onder begeleiding van een mooie lichtflits- overgaan in materie en antimaterie.

    Wat kan die Feynman moeilijke dingen toch makelijk uitleggen.

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  9. I am so bad at these quizes and am so gonna lose!! But I do like Brigitta's answer and the one about the elephant on a circus ball.. But I have come to the conclusion I am not able to think anymore, i guess I had to much physics for one day (after reading the long, but fantastic story about the beginning, middle and end of our universe by Jelle) and I will try to come up with some kind of answer tomorrow :)

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