Sam Ting Claims That A \(1\Tev\) Wimp Is The Solely Sensible Theory Matching The 5-Year Ams Data

Addition Dec 14th: the recorded video of the lecture is lastly available.

Update: Some meaningful information overlapping amongst Ting's verbalize may live constitute inwards this Erik Verlinde has for sure unified black thing too black unloosen energy inwards his ain version of my holographic MOND. A would-be NASA rocket scientist suggests that his reactionless EM drive mightiness give us flight cars that may also instruct to other galaxies. Some of his fans advise that this conception of the millennium (which tin exert a piconewton because a piconewton is the fault of their measurement) is driven past times black matter.

Well, spell all the journalists are obsessed amongst assorted cranks too speculative physicists too their musings well-nigh black matter, is the exclusively website inwards the the world that seems to attention what a $1.5 billion experiment designed to regain black thing says well-nigh black matter. Who could perhaps attention well-nigh a $1.5 billion experiment if nosotros receive got a genius edifice intergalactic spaceships past times reflecting microwaves within a plunger? And as nosotros volition see, the AMS results are much farther from "null results" than the results of hush-hush experiments as good as the searches for black thing at the LHC.



As I mentioned at the acme of the previous weblog post, Bill Zajc, your humble correspondent, too others watched a CERN colloquium today (17:00-18:00 Prague Winter Time) where Nobel laureate Sam Ting promised to study some unexpected results of the 5-year run of the Alpha Magnetic Spectrometer, a gadget working on board of the International Space Station.

See some previous TRF weblog posts well-nigh the AMS experiment.




Sadly, roughly 25 minutes afterward the verbalize began, the video started to instruct jammed too became unusable for all of us. Well, maybe CERN exclusively sabotaged the watching sense of TRF bloggers too readers such as Bill Zajc. But if that's so, André David too Robert Garisto of PRL are TRF readers, too. ;-) And AMS-02 admitted that the webcast was downward on Twitter. You may encounter a few slides on that Twitter account.




I believe that the recent talks well-nigh LIGO were left to YouTube too the experience was flawless, despite the huge let on of viewers. CERN should switch to YouTube as the provider of the alive videos. When they postulate both "camera" too "slides" windows, they should run 2 YouTube streams. The CERN websites may live reduced to a simple HTML code that embeds the 2 YouTube windows.

Just a proposal. To live fair, I must acknowledge that the CERN broadcast plant fine correct now again. If you lot savor looking at the empty CERN hall, this is your dearest painting for tonight.



These ties truly comprise non merely the leptons too quarks but all the simple fermions that are probable to be too live real of import for phenomenology – including \(\chi\), the neutralino or the particle of black matter, that is written on the sparse "tail". I hope that my friend won't live also sorry or angry that I exclusively receive got the bluish necktie left. The cerise 1 went to ex-president Klaus during his 75th birthday party. Klaus also got a necktie from some other man but that human being is a homeless loser hence the necktie didn't comprise a unmarried fermion. His yell is Donald Trump.

At whatever rate, the shortened verbalize – nosotros hope to encounter the total verbalize before long – was plenty to honor Ting as he talks well-nigh ambitious conclusions. Recall that AMS measures the electron, positron, too antiproton flux. It has previously observed that the let on of positrons did grow amongst unloosen energy too the increment did seem to halt at some hundreds of gigaelectronvolts.

The newest information presented today went a flake further. You could truly encounter that the positron flux seems to live dropping, as predicted from the black thing twain annihilation of 2 neutralinos or other WIMPs, \[

\chi+\chi \to e^- + e^+

\] etc. The charts are fully compatible amongst the black thing theory where the WIMP volume is approximately\[

m_\chi \sim 1\TeV.

\] This is a flake heavier than AMS claimed previously. An older weblog ship service talked well-nigh the volume \(350\GeV\). Nevertheless, a teraelectronvolt-mass lightest supersymmetric particle would live a neat witch to live hunted past times the LHC, too.

Alternative, less spectacular, theories explaining the partial information well-nigh the fluxes exist. For example, it could live due to pulsars. But pulsars don't explicate all the charts – they seem to disagree amongst the graph for antiprotons. And I apologize if the previous judgement should receive got said "protons" instead.

Also, Ting said that the supposition believed for decades – that a unmarried ability police is plenty to explicate the flux of antiprotons (or protons) – seems wrong. The flux seems to decrease amongst the unloosen energy according to a ability police but at some moment, the decrease dramatically slows downward too there's a plateau – or some other ability police takes over, if you lot wish.

Many to a greater extent than things should instruct settled past times the AMS past times 2024, Ting promised at diverse points.

So CERN's technical glitches receive got made the verbalize incomplete to us. But I am afraid that nosotros could recall that the interpretation is inconclusive fifty-fifty if nosotros receive got seen the whole talk. On the other hand, I recall it's correct to order that AMS is currently the most prominent experiment that truly seems to strengthen the illustration for the conventional WIMP (and perhaps supersymmetric) theory of black matter.

Check Jester's update on WIMPs from September 2016 to encounter that the hush-hush experiments receive got excluded quite a lot of possibilities – spell the possibilities on the lower side (very weak WIMP-nucleon interactions) are excluded past times some astrophysical or cosmological arguments. In particular, if the WIMP volume is \(1\TeV\), the nucleon-WIMP cross department should live betwixt \(0.03\) too \(1.3\) zeptobarn. (Zepto- is linguistically related to septima, seven, hence it's one-thousandth to the 7th power. So a zeptobarn is \(10^{-21}\) barn or \(10^{-9}\) picobarn.) Only the thickness of one-half an gild of magnitude is left feasible for the cross section.

But that doesn't necessarily hateful that WIMP is real unlikely now. It may merely hateful that physicists receive got narrowed the choices – merely similar when they knew that the Higgs was betwixt \(115\GeV\) too \(140\GeV\). At that moment, the \(125\GeV\) Higgs uncovering was a yr or 2 away. Is the terrestrial uncovering of the WIMP particle as closed – or closer?