Looking Forward to Moriond

The LHC has ended its three-year long physics run this week and is now finishing off with some quench tests. Tomorrow (Saturday) morning the beams will be dumped for the last time for nearly two years while the collider is upgraded so that it can work at a higher energy of 12.5 – 13 TeV.


But the fun is not quite all over yet. In just over two weeks time we should start to see the first of the final results from proton physics run that ended in December 2012. The event to watch is the Electro-Weak section of the Moriond Meeting that opens on the 2nd March. The schedule has not yet been published but when it is you should see it at this link. The following week they will hold the Moriond QCD meeting whose schedule is now available at this link. There will be a quick summary of the Higgs searches which I presume will have already been revealed the week before.

What we expect to see is an update for all the Higgs decay channels from both ATLAS and CMS. Remember that we have seen all the results for 5/fb @ 7TeV + 13/fb @ 8TeV, except that CMS choose not to publish the diphoton result because it was smaller than expected. This means that the public values for the diphoton cross-section are currently subject to a selection bias that needs to be put right. The hope is that we will get full results at something like 5/fb @ 7TeV + 20/fb @ 8TeV, In other words we will have 40% more data for most channels and about 75% more for the diphoton channel. We know that all channels other than diphoton are perfectly in line with the standard model Higgs while the diphoton channel cross-section is a bit too large. However, we need to remove the CMS selection bias before we can get excited about it.

In addition to the cross-sections we can hope for an update to the tests of spin parity on the Higgs boson. This is the final step required before CERN will be happy to declare that the Higgs-Very-Like-Boson is indeed the Higgs-Boson so that Nobel prizes can be handed out. It is unlikely that the individual results from CMS and ATLAS will be quite sufficient. These tests do not need a 5-sigma significance because they are property measurements rather than discoveries. I think they will settle for 3 or 4 sigmas but this will require the combination of CMS and ATLAS data.

The ATLAS and CMS collaborations have had plenty of time to analyse their results and have kept them under wraps with no rumours leaking out yet. This may mean that they are keeping them “blind” until the last-minute. If that is the case it will probably mean that there is not time to do an ATLAS+CMS official combination for Moriond. Unofficial combinations of the channel cross-sections can be done quickly by hand but the spin-parity is more subtle so there will be one final Higgs cliff-hanger until the summer.

Normally the biggest HEP conference of the year is either the European EPS-HEP conference or the ICHEP conference. These normally alternate in a two-year cycle but this year an extra ICHEP conference in Switzerland has been laid on. (UPDATE: It turns out that this is not an official ICHEP conference. Same committee appears to be organising over 1000 conferences this year. Do not register, ) The EPS-HEP conference looks legit and will be in Stockholm. Please always check before paying conference fees.

Update: 16-Feb-2013


See Mike Lamont’s final “run 1” report in the CERN bulletin

21 Responses to Looking Forward to Moriond

  1. My be something interesting from holometer experiment until next round Higgs Hunting
    Something news from Craig Hogan?

  2. someone says:

    from two unveiled exact experimental data, what kind of new physics can be still considered as the possibilities of non sm higgs although it might be a secret weapon for theorists.
    but gimme a vague hint!!!

    • Philip Gibbs says:

      There will be talks about the 2-Higgs Doublet Model and composite Higgs at Moriond. These are the simplest of numerous possibilities.

  3. Orwin O'Dowd says:

    The ICHEP special is a team effort with the International Journal of Engineering and Physical Science. New physics required new levels of experimental control to bring it into focus, so there clearly is something happening “in back,” and they spoke at Davos, to world industry leaders, of having a clear view of the Higgsish phenomenon by mid-year. There is a flurry of interest in Higgs dynamics in conductivity, off-view from the HEP-PH hype, in solid state. I hope this brings a break-through in reducing transmission losses in power grids, and the pollution the bring, perhaps with application of graphene/graphyne.

    Actually this is an old story. In back of the French Revolution itself they did the metric system, and privatized pharmaceuticals. But don’t ask a sociologist to explain scientific revolutions that way.

  4. […] Terwijl de technici komende anderhalf jaar deze klus klaren zullen de wetenschappers niet stil zitten. Zij zijn bezig om de gegevens te analyseren, die de afgelopen twee jaar met de LHC zijn vergaard. Op 4 juli 2012 werd bekend gemaakt dat met de CMS- en ATLAS-detectoren van de LHC een nieuw boson is ontdekt, dat met 99,9 % zekerheid het Higgs-boson is. Maar 100% zekerheid is er nog niet en wil een Nobelprijs-comité de Nobelprijs voor de Natuurwetenschappen aan de bedenkers en ontdekkers van het Higgs boson toekennen, dan moet je wel die volledige zekerheid hebben. Reken maar dat flink gerekend wordt aan de gegevens en dat op één van de komende grote natuurkunde-conferenties (Moriond in maart, EPS-HEP en ICHEP in de zomer, kies er maar eentje) het verlossende woord gaat worden gegeven. Cruciaal is de spin pariteit van het gevonden boson: als daar meer over bekend wordt zou het beslissende ja-woord kunnen worden gegeven. We wachten het met spanning af. Bron: viXra. […]

  5. The final run ended up being on my birthday just as I landed a new job, what a coincidence! How much data has been gathered so far? I know they measure it in inverse femtobarns but what is the byte-size on disk? Is the raw data released as open-source to allow outsiders to explore the data?

    • Philip Gibbs says:

      They have recorded 75 petabytes. This is certainly not available as open source. The size alone would make that impractical, plus it needs to be tied to the software that encapsulates the behavior of the detectors, triggers etc. Only the experimenters directly involved have any chance of doing anything with the raw data. In fact preserving the capacity to do that in the future when people move on is a huge challenge in itself.

      What would be useful and practical would be for them to release data of likelihoods once all the technical details have been factored out. They dont do that because they dont want outside theorists getting the scoop. Most theorists therefore work by reading rough numbers of plots and assuming normal distributions to get approximate results. The chosen few may get better quality data to do fits.

      To be fair the teams in the collaborations are very busy doing their own analysis and it would be too much to expect them to give a higher priority to preparing data in a form that theorists can use in their own models. It may take them a year to do the bulk of what they want with the data collected so far and it will be interesting to see if they spend some of the following year helping theorists to build general tools to apply the data to their own models. Such things have at least been proposed.

  6. carla says:

    So what’s the chances that the LHC will start up in late rather than early 2015? Inevitable, I say. These things always get delayed 🙂

  7. HHu says:

    Sorry – unrelated but interesting: http://breakthroughprizeinlifesciences.org/


    11 Inaugural winners receive US$3 million each for Groundbreaking Achievements in Life Science Research.

  8. Hologram convergence from outside space towards inside is a function of air,earthy,water,fire domains as optically reflective information of linear polarisation converged as circular polarisation giving more Bessel beam tractor effect by opposing reflections.and can be diverged back outside as connected to outside domains from inside.
    Optomechanical devices as transducers using Tractor waves and tricky invisible cloaking dynamics-reg [Incident: 130116-000085] news@ nature.com

    Invisible Cloaking hologram that can be converted as tractor wave pulling force that becomes a 3D projections:
    A perfect invisibility cloak is commonly believed to be undetectable from electromagnetic (EM) detection because it is equivalent to a curved but empty EM space created from coordinate transformation. Based on the intrinsic asymmetry of coordinate transformation applied to motions of photons and charges, we propose a method to detect this curved EM space by shooting a fast-moving charged particle through it. A broadband radiation generated in this process makes a cloak visible. Our method is the only known
    EM mechanism so far to detect an ideal perfect cloak (curved EM space) within its working band. Squeezing from broad band to narrow band makes it invisible and towards a broad band becomes invisible. That is why ghosts are invisible sometimes and visible sometimes..
    We can explain the above process by comparing the motion in the physical space and in the virtual space. When the particle enters the cloak, its velocity in the virtual space in Fig. 1(b) has an abrupt change at point A, which generates some radiation in virtual space. This radiation corresponds to the transition radiation that occurs at the incident point at the outer boundary of the cloak in physical space [point A in Fig. 1(a)]. Similarly, when the particle comes out at the other side of the cloak, another abrupt velocity change occurs in the virtual space [point C in Fig. 1(b)], which corresponds to the transition radiation emitted at the outer boundary of the cloak in physical space [point C in Fig. 1(a)]. Throughout its motion inside the cloak in the physical space [segment AC in Fig. 1(a)], the
    particle generates transition radiation due to the inhomogeneity and anisotropy of the cloak. This particle’s motion in the virtual space [curved segment ABC in Fig. 1(b)] can be divided into two parts—motion along AB and motion along BC, corresponding to the two radiation stages. While moving, the particle’s velocity keeps changing direction as well as magnitude, which gives rise to Bremsstrahlung and synchrotron radiation. Another kind of radiation that is generated in the regions close to the outer boundary of the cloak [close to A or C in both Figs. 1(a) and 1(b)], is Cerenkov radiation when the velocity of the particle is larger than the speed of light
    Varying the intensity of tractor waves: The intensity that varies across a laser beam can be used to push objects sideways, can be controlled by frequency –velocity shifted along visible to invisible hologram theoretically for Bessel beams is that for particles that are sufficiently small, the light scatters off the particle in a forward direction, meaning that the particle itself is pulled backwards towards the source, The size of the tractor beam force depends on parameters such as the electrical and magnetic properties of the particles. Malaria-infected blood cell is more rigid can be stimulated to have scattering thereby an in infection could be removed. Usually, if a laser beam hits a small particle in its path, the light is scattered backwards, which in turn pushes the particle forward. The size of the tractor beam force depends on parameters such as the electrical and magnetic properties of the particles focused two laser beams with a specific frequency into a cavity containing a silicon wafer that acted as a “loss medium.” The“decoherence”, in which the quantum nature of a particle slowly slips away through its interactions with other matter with reference to a change in the frequency and velocity. A particle can now best be defined as the conceptual carrier of a set of variates. . . It is also conceived as the occupant of a state defined by the same state of variates.Ghost detecting hologram and survival after death of humanbeings in another frequency and velocity in indivisible carpet will be investigated soon and will be realistic.
    In conclusion, we have demonstrated the broadband radiation process of a fast-moving charged particle going through a perfect invisibility cloak that is equivalent to a curved EM space. Dyadic Green function is derived and used in the calculation. The radiation is explained by comparing the motion of the charge in both physical and virtual spaces. We believe this is the only known mechanism thus far to detect a perfect invisibility cloak or a curved EM space within its working band electromagnetically. With the interactive Bessel tractor laser interaction the force can be amplified and squeezed by noise elimination control.
    If an optical cavity is of ultrahigh quality and the mechanical resonator element within is atomic-sized and chilled to nearly absolute zero, the resulting cavity optomechanical system can be used to detect even the slightest mechanical motion. Likewise, even the tiniest fluctuations in the light/vacuum can cause the atoms to wiggle. Changes to the light can provide control over that atomic motion. This not only opens the door to fundamental studies of quantum mechanics that could tell us more about the “classical” world we humans inhabit, but also to quantum information processing, ultrasensitive force sensors, and other technologies that might seem like science fiction today.

    Sankaravelayudhan Nandakumar on behalf of Hubble research investigating team working under G.H.Miley ,University of Illinois,USA.
    Based on pioneering work by Albert Einstein and Max Planck more than a hundred years ago, it is known that light carries momentum that pushes objects away. In addition, the intensity that varies across a laser beam can be used to push objects sideways, and for example can be used to move cells in biotechnology applications. Pulling an object towards an observer, however, has so far proven to be elusive. In 2011, researchers theoretically demonstrated a mechanism where light movement can be controlled using two opposing light beams — though technically, this differs from the idea behind a tractor beam. The system which provides a magnetic trap for capturing a gas made up of thousands of ultracold atoms during this December January period.
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    • Orwin O'Dowd says:

      This study of relativistic electron vortices:


      finds a substantial factor of spin-orbital interaction, due to polarization. Its a complex factor, and in classical terms, not dimensionally consistent. Both mass and momentum get reduced to vectors in an abstract geometry, and we learned to say that these Dirac particles have no mass.

      In other words, any new information from astronomy now has important bearing on the Higgs mechanism, which is supposed to supply the mass. The problem is then to determine the relevant Yukawa potential for the couplings. This reminds me of Newton in the Queries to his Opticks suggesting that there is not one ether but two, so that one can now speak of vacuum polarization, and apply it to free electron vortices. Or in other words, the ether/vacuum is complex-valued.

  9. JinHe says:

    Congratulation! Journal of Cosmology ranks high in Alexa Traffic Rank :

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