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Страници по тази тема: 1 | 2 | 3 | 4 | 5 | 6 | 7 | (покажи всички)
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От известно време се носят слухове, че са забелязали Хигса в ЦЕРН с маса около 125GeV. Ще има официално съобщение другата седмица.
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И това е кьорфишек като свръхсветлинното мандарино.
Много взеха да ментрят. Що ли?
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Ще съобщят, че не е баш 100% сигурно (над 3 сигма и под 5 е- може би даже 4 сигма да е) ама почти сигурно.
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...за слуха от блогове
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много е важно да се види цялото видео
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Днес ще бъде направено официално съобщение относно Хигс в 11:00 CET. Ще се предава на живо тук: http://webcast.web.cern.ch/webcast/
Малко след това Брайън Грийн на фейсбук страницата си ще даде пояснения какво всъщност става: http://www.facebook.com/BrianGreenePhysicist
В някои български електронни медии съобщиха, че днес започва търсенето на Хигс бозона, което си чиста глупост. Днес ще се дава информация за масите :)
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какво стана? някой да обобщи?
(трудността е в това, че Хигс-бозона е много кратко живеещ)
ето за значението на Higgs boson
The Standard Model successfully describes all of the elementary particles we know to exist and how they interact with one another. But our understanding of nature is incomplete. In particular, the Standard Model cannot answer one basic question: Why do most of these elementary particles have masses?
Without mass, the universe would be a very different place. For example, if the electron had no mass, there would be no atoms. Hence there would be no ordinary matter as we know it, no chemistry, no biology and no people. In addition, the Sun shines thanks to a delicate interplay among the fundamental forces of nature, which would be completely upset if some of those force particles did not have large masses.
At first sight the concept of mass seems not to fit into the Standard Model of particle physics. Two of the forces the model describes – electromagnetism and the weak nuclear force – can be described by a single theory, that of the electroweak force. Scientists have subjected the electroweak theory to many experimental tests, which it has passed with flying colours. However, the basic equations of the theory seem to require all elementary particles to be massless.
Scientists needed a way out of this conundrum. Several physicists, including Peter Higgs, discovered a mechanism that, if added to the equations, would allow particles to have masses. This is now known as the Higgs mechanism. Integrating it into the Standard Model allowed scientists to make predictions of various quantities, including the mass of the heaviest known particle, the top quark. Experimentalists found this particle just where equations using the Higgs mechanism predicted it should be.
According to theory, the Higgs mechanism works as a medium that exists everywhere in space. Particles gain mass by interacting with this medium. Peter Higgs pointed out that the mechanism required the existence of an unseen particle, which we now call the Higgs boson. The Higgs boson is the fundamental component of the Higgs medium, much as the photon is the fundamental component of light.
The Higgs boson is the only particle predicted by the Standard Model that has not yet been seen by experiments. The Higgs mechanism does not predict the mass of the Higgs boson itself but rather a range of masses. Fortunately, the Higgs boson would leave a unique particle footprint depending on its mass. So scientists know what to look for and would be able to calculate its mass from the particles they saw in the detector.
Experimentalists might find that the Higgs boson is different from the simplest version the Standard Model predicts. Many theories that describe physics beyond the Standard Model, such as supersymmetry and composite models, suggest the existence of a zoo of new particles, including different kinds of Higgs bosons. If any of these scenarios turn out to be true, finding the Higgs boson could be a gateway to discovering new physics, such as superparticles or dark matter. On the other hand, finding no Higgs boson at the LHC would give credence to another class of theories that explain the Higgs mechanism in different ways.
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още линкове:
от конференцията днес
част1 -
част 2 -
Interview to Guido Tonelli, CMS spokesperson
какво откриха в крайна сметка? - масата му, че е между 115-130 GeV
и доказателскво, че съществува (но е нужно още, за 100% статистически доказано)
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Сега най-важният въпрос е:
Какво ще се промени във света и във разбиранята ни след доказването на тази частица?До какво ще доведат тези данни?Какви ще сме от тук нататък.Това би трябвало да е доста голямо откритие,вероятно най-голямото за десетилетието.
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мисля, че заради Хигс-бозона е построен колайдера
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Така е.В колайдера са вложени 10 милиарда. Не бива прибързано да се радваме на голямото откритие,тъй като не е потвърдено.Възможно е колайдера да е бил построен напрзно,ако нищо не се докаже.
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Страници по тази тема: 1 | 2 | 3 | 4 | 5 | 6 | 7 | (покажи всички)
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(curmudgeon)
