The Interacting Gluon Model: a review
... Among all the existing models, there are some which try to give a very comprehensive description of all possible experimental data. Usually these models are at some stage transformed into event generators and are used by experimental groups. While they may be helpful in projecting detectors and anal ...
... Among all the existing models, there are some which try to give a very comprehensive description of all possible experimental data. Usually these models are at some stage transformed into event generators and are used by experimental groups. While they may be helpful in projecting detectors and anal ...
The “Simulation Thing”
... Particle Simulations This is now significantly more complicated. After each time-step the simulation must compare every pair of particles to see if they have collided by calculating the distance between them and checking to see if that distance is less than the combined radius of the hockey pucks. ...
... Particle Simulations This is now significantly more complicated. After each time-step the simulation must compare every pair of particles to see if they have collided by calculating the distance between them and checking to see if that distance is less than the combined radius of the hockey pucks. ...
Elementary particles and the exasperating Higgs boson: the ideas
... "We understood everything: at LHC you will find the Higgs and other particles…" We found the Higgs, but nothing else !!!! 1) Multiply the mass of the Higgs by 10-16 2) Find new particles in the coming years (LHC in Geneva will start working in a month !!) 3) The theories are wrong ...
... "We understood everything: at LHC you will find the Higgs and other particles…" We found the Higgs, but nothing else !!!! 1) Multiply the mass of the Higgs by 10-16 2) Find new particles in the coming years (LHC in Geneva will start working in a month !!) 3) The theories are wrong ...
FlerasLectures - University of Oklahoma
... Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them. It is also called "high energy physics", because many elementary particles do not occur under normal circumstances in nature, but can be created and detected d ...
... Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them. It is also called "high energy physics", because many elementary particles do not occur under normal circumstances in nature, but can be created and detected d ...
Core Problem - Max-Planck
... “What would be most interesting, however, is if our result were to point to a physics beyond the standard model,” says Randolf Pohl. The standard model of particle physics describes all elementary particles and most of the forces between them. It covers most observations very well, but it also has s ...
... “What would be most interesting, however, is if our result were to point to a physics beyond the standard model,” says Randolf Pohl. The standard model of particle physics describes all elementary particles and most of the forces between them. It covers most observations very well, but it also has s ...
In search of symmetry lost
... particles that are sufficiently heavy — specifically, those whose mass exceeds 114 GeV, which is the current lower bound14 — will have to await more powerful accelerators than are now available. But theory tells us that this evasion cannot be maintained indefinitely. If the Higgs particle, or an app ...
... particles that are sufficiently heavy — specifically, those whose mass exceeds 114 GeV, which is the current lower bound14 — will have to await more powerful accelerators than are now available. But theory tells us that this evasion cannot be maintained indefinitely. If the Higgs particle, or an app ...
Unit 2: The Fundamental Interactions
... loses its mass to the energy of the photons leaving it—and actually becomes lighter! ...
... loses its mass to the energy of the photons leaving it—and actually becomes lighter! ...
Observation of New-Particle Production by High
... B. Aubert and J. Pilcher for early contributions ...
... B. Aubert and J. Pilcher for early contributions ...
A strange, elusive phenomenon called supersymmetry was
... packed bundles of protons (orange) and neutrons (blue). Because of the strength and complexity of the strong nuclear force that holds nuclei together, physicists have long resorted to approximate models to describe the quantum states of nuclei. The shell model (b) is very similar to the description ...
... packed bundles of protons (orange) and neutrons (blue). Because of the strength and complexity of the strong nuclear force that holds nuclei together, physicists have long resorted to approximate models to describe the quantum states of nuclei. The shell model (b) is very similar to the description ...
Rapid growth of cloud droplets by turbulence Abstract
... time, typically half an hour, is a well-known phenomenon which still defies explanation. This phenomenon is essential for understanding rain initiation and cloud albedo [1, 2]. Condensation dominates cloud droplet growth till about 10 to 15 µm and may be producing a narrow droplet size distribution ...
... time, typically half an hour, is a well-known phenomenon which still defies explanation. This phenomenon is essential for understanding rain initiation and cloud albedo [1, 2]. Condensation dominates cloud droplet growth till about 10 to 15 µm and may be producing a narrow droplet size distribution ...
The CMS Fast Simulation
... to develop reconstruction algorithms, analyses to adapt the trigger tables to new conditions (like 14->10 TeV) in addition when we have data, to determine the efficiencies on the signal, to determine some background contamination, to perform scans of the ...
... to develop reconstruction algorithms, analyses to adapt the trigger tables to new conditions (like 14->10 TeV) in addition when we have data, to determine the efficiencies on the signal, to determine some background contamination, to perform scans of the ...
Discovering the Nucleus of the Indivisible
... Divisibility & the Structure of Matter Indivisibility implies not the lack of (sub)structure: But, why can we separate e– and p+, but not quarks? Binding energy of H-atom = 13.6 eV. Rest energy of e– = 510,999 eV. En = – ½ !e2 m c2 #e = ⅟&'( ...
... Divisibility & the Structure of Matter Indivisibility implies not the lack of (sub)structure: But, why can we separate e– and p+, but not quarks? Binding energy of H-atom = 13.6 eV. Rest energy of e– = 510,999 eV. En = – ½ !e2 m c2 #e = ⅟&'( ...
Fluctuation of Conserved Quantities to look for Critical Point in
... ✓ Luminosity will be improved with electron cooling system. ✓ Some detector upgrades will be done by BESII. Pseudo-rapidity coverage will be extended from 1.0 to 1.5. ✓ Higher order fluctuation measurement with small errors and large acceptance. ...
... ✓ Luminosity will be improved with electron cooling system. ✓ Some detector upgrades will be done by BESII. Pseudo-rapidity coverage will be extended from 1.0 to 1.5. ✓ Higher order fluctuation measurement with small errors and large acceptance. ...
Large Hadron Collider
The Large Hadron Collider (LHC) is the world's largest and most powerful particle collider, the largest, most complex experimental facility ever built, and the largest single machine in the world. It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and engineers from over 100 countries, as well as hundreds of universities and laboratories. It lies in a tunnel 27 kilometres (17 mi) in circumference, as deep as 175 metres (574 ft) beneath the France–Switzerland border near Geneva, Switzerland. Its first research run took place from 30 March 2010 to 13 February 2013 at an initial energy of 3.5 teraelectronvolts (TeV) per beam (7 TeV total), almost 4 times more than the previous world record for a collider, rising to 4 TeV per beam (8 TeV total) from 2012. On 13 February 2013 the LHC's first run officially ended, and it was shut down for planned upgrades. 'Test' collisions restarted in the upgraded collider on 5 April 2015, reaching 6.5 TeV per beam on 20 May 2015 (13 TeV total, the current world record for particle collisions). Its second research run commenced on schedule, on 3 June 2015.The LHC's aim is to allow physicists to test the predictions of different theories of particle physics, high-energy physics and in particular, to prove or disprove the existence of the theorized Higgs boson and the large family of new particles predicted by supersymmetric theories, and other unsolved questions of physics, advancing human understanding of physical laws. It contains seven detectors, each designed for certain kinds of research. The proton-proton collision is the primary operation method, but the LHC has also collided protons with lead nuclei for two months in 2013 and used lead–lead collisions for about one month each in 2010, 2011, and 2013 for other investigations. The LHC's computing grid was (and currently is) a world record holder. Data from collisions was anticipated to be produced at an unprecedented rate for the time, of tens of petabytes per year, a major challenge at the time, to be analysed by a grid-based computer network infrastructure connecting 140 computing centers in 35 countries – by 2012 the Worldwide LHC Computing Grid was also the world's largest distributed computing grid, comprising over 170 computing facilities in a worldwide network across 36 countries.