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2 edition of B meson decays at the CERN proton-antiproton collider found in the catalog.

B meson decays at the CERN proton-antiproton collider

Mark Nikitas

B meson decays at the CERN proton-antiproton collider

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Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D)-University of Birmingham, School of Physics and Space Research, 1991.

StatementMark Nikitas.
ID Numbers
Open LibraryOL13929303M

This "Cited by" count includes citations to the following articles in Scholar. The ones marked * may be different from the article in the profile.   Supersymmetry is a beautiful theory that might explain dark matter – now particle physicists at Cern are putting it to the ultimate test Jeff Forshaw Author: Jeff Forshaw. Abstract. We present results for B-meson decay modes involving a charm meson, protons, and pions using x 10{sup 6} B{bar B} pairs recorded by the BABAR detector at the SLAC PEP-II asymmetric-energy e{sup +}e{sup -} collider. The decay in the question only happens 3 out of 10 9 B-decays (A B-decay is a decay where a B-meson decays. A B-meson is a particle consisting of a anti-bottom quark and an up, down, strange, or charm quark). This is according to the standard model. The fraction of all decays that lead to a particular final result is also called the branching.


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B meson decays at the CERN proton-antiproton collider by Mark Nikitas Download PDF EPUB FB2

A search for the decays B zero to mu(+)mu(-), B to mu(+)mu(-)X and B zero sub d to mu(+)Mu(-)K zero, which are expected to be rare if mediated by flavor changing neutral currents, is reported. Using data collected during the to CERN proton-antiproton collider runs, the UA1 search was carried out using muon(+)muon(-) events with GeV/c squared less than M sub mumu less than GeV/c Author: C.

Albajar, R. Kinnunen, J. Tuominiemi, V. Karimaki, M. Pimia, E. Pietarinen. The research programme at CERN covers topics from kaons to cosmic rays, and from the Standard Model to supersymmetry. b-meson. Content type. Date From The LHCb collaboration has recently observed matter-antimatter asymmetries in the decays of the B0s meson News Experiments 24 April, However, these transitions are expected at the one-loop level through the so-called penguin diagrams.

Examples of B decays containing dimuons in the final state are shown in fig. 1 [ 1,2 ]. The final state leptons provide an excellent signature for rare B decay searches at hadron colliders [ 3 ].Cited by: Volumenumber 2 PHYSICS LETTERS B 5 March SEARCH FOR B°-B ° OSCILLATIONS AT THE CERN PROTON-ANTIPROTON COLLIDER UA 1 Collaboration, CERN, Geneva, Switzerland Aachen-Amsterdam (NIKHEF)-Annecy (LAPP)-Blrmlngham-CERN-Harvard-Helsmkl-KaelAuthor: C Albajar, M G Albrow, O C Allkofer, G Arnison, A Astbury, T Axon, T Bacon, A Bezaguet, K Bos, G Bun.

The parameter X is averaged over the unknown beauty particle composition of jets at the collider Our result is compatible with existing limits on r3o oscillations coming from experiments at e-ecolliders provided the oscillations occur mainly in the B° system, as favoured theoretically The limit on the ratio of wrong-sign to right-sign decays for B°, rs>0 12, corresponds to a mass difference, AYI(B°) > 3 X Cited by:   Books Comics The findings are based on data collected between and at CERN's Large Hadron Collider (LHC) in Switzerland.

Neutral B meson decays Author: Amar Toor. In the last five decades, proton–proton and proton–antiproton colliders have been the most powerful tools for high energy physics investigations. They have also deeply catalyzed innovation in accelerator physics and technology.

Among the large number of proposed colliders, only four have really succeeded in becoming operational: the ISR, the SppbarS, the Tevatron and the by: 3.

Proton-Antiproton Annihilation and Meson Spectroscopy with the Crystal Barrel∗ Claude Amsler Physik-Institut der Universit¨at Zu¨rich, WinterthurerstrasseCH Zu¨rich, Switzerland February 5, Abstract This report reviews the achievements of the Crystal Barrel experiment at the Low En-ergy Antiproton Ring (LEAR) at CERN.

The Belle collaboration published the result of CP violation measurement in B-meson decays first in March, ,58)with the accumulated luminosity of fb−1after about one year from the start of data taking.

Although the statistical significance is still limited, the result indicated CP violation in B-meson by: 1. On 25 SeptemberFermilab announced that they had claimed discovery of previously-only-theorized B s meson oscillation. According to Fermilab's press release: This first major discovery of Run 2 continues the tradition of particle physics discoveries at Fermilab, where the bottom () and top () quarks were discovered.

Proton-Antiproton Annihilation and Meson Spectroscopy with the Crystal Barrel⁄ Claude Amsler Physik-Institut der Universit˜at Z˜urich, Winterthurerstrasse B meson decays at the CERN proton-antiproton collider book, CH Z˜urich, Switzerland June 2, Abstract This report reviews the achievements of the Crystal Barrel experiment at the Low Energy Antiproton Ring (LEAR) at CERN.

B mesons for the first time. Scientists found the B s meson decaying into two muons for the first time, with Large Hadron Collider experiments casting doubt on the scientific theory of supersymmetry. CERN physicist Tara Shears described the CP violation observations as "verification of the validity of the Standard Model of physics".Composition: bs.

Presentation of the parallel session on weak decays of new particle (C) by Reucroft, S: Measurrement of the $\tau$ lifetime (C) by Jaros, J A: CLEO results on B meson decay (C) by Gittelman, B: CUSB results on the weak decay of the B meson (C) by Franzini, P.

Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link)Author: M Nikitas. Using data collected during the to CERN proton-antiproton collider runs, the UA1 search was carried out using muon(+)muon(-) events with GeV/c squared less than M sub mumu less than.

Besides the answers already given, there is antiproton availability issue. Antiprotons are produced in collisions of energetic protons with a fixed target.

But the probability of producing an antiproton in such collision is rather low, you need ma. The extremely rare decays of particles known as neutral B mesons have been observed at CERN's Large Hadron Collider. The result may be a. "LHC" redirects here. For other uses, see LHC (disambiguation). Large Hadron Collider (LHC) LHC experiments ATLAS A Toroidal L.

An electron-volt is a unit of energy, so the rest energy of a B meson is GeV, not GeV*c^2. The mass of the B meson could be written as GeV/c^2, but you don't generally plug a value in for c. You just leave it as c. Also, remember that the question asked you for the kinetic energy of the proton, not the proton-antiproton pair.

We report on the first observation of the beauty baryon Λ b in an exclusive decay channel at the CERN p p collider. Using pb −1 of muon data collected in the /89 collider runs we reconstruct 16±5 Λ b 's in the decay mode Λ b → J ψΛ above a background of 9±1 events, corresponding.

We present a search for the decay W+/>pi+/-gamma, using data taken at the CERN proton-antiproton Collider with the UA1 detector and corresponding to an integrated luminosity of pb : Searching for CP violation in charmed meson decays: A measurement of CP-violating asymmetries in Cabibbo-suppressed neutral D decays to two pseudoscalar mesons at CDF (): Angelo Di Canto: Books.

Tevatron proton-antiproton collider reported the first real measurement – sin2 ß = + – – disfavouring negative values for sin2 ß, which are possible in unorthodox. scenarios. First results from the B-factories were reported last summer at the.

international high-energy conference in Osaka, Japan, and caused quite a stir. This book highlights two essential analyses of data collected during the LHCb experiment, based on the Large Hadron Collider at CERN.

The first comprises the first observation and studies of matter-antimatter asymmetries in two three-body b-baryon decays, paving the way for more precise measurements of the relatively unknown decay properties of b-baryon : $   Recent measurements of B-meson decays in which tau leptons are produced might challenge the standard model assumption that interactions of leptons differ Cited by: To understand the nature of the χ c1 () it is hepful to compare its properties to those of conventional charmonium particles with similar mass.

LHCb physicists compared the production of the χ c1 () with the production of ψ 2 () and ψ(2S) mesons accompanied by a K + meson in B + decays. The decay ψ 2 ()→ J/ψπ + π-is observed for the first time with significance. “This new result confirms that a Bs meson decays into two muons, a rare process that is predicted to occur only four times out of every one billion decays,” says Stone.

We present a search for B0s oscillations using semileptonic Bs → DsmuX (Ds → K0SK). The data were collected using the DO detector from events produced in s = TeV proton-antiproton collisions at the Fermilab Tevatron.

The Tevatron is currently the only place in the world that produces B0s mesons and will be until early when the Large Hadron Collider begins operating at : Dan Krop. To catch the new charmonium particle, the LHCb collaboration, one of the four main experiments at the Large Hadron Collider, studied the decays of charmonium states produced in proton–proton collisions into pairs of D mesons, using data recorded between and ; D mesons are the lightest particles containing charm quarks.

The LHCb experiment is built at the LHC collider at CERN. It is a forward single-arm spectrometer dedicated to precision measurements of CP violation and rare decays in the b quark sector.

In the Standard Model, CP violation arises via the complex phase of the 3 x 3 CKM (Cabibbo-Kobayashi-Maskawa) quark mixing matrix. Other articles where Proton-antiproton collider is discussed: Fermi National Accelerator Laboratory: Tevatron began operation as a proton-antiproton collider—with GeV protons striking GeV antiprotons to provide total collision energies of teraelectron volts (TeV; trillion electron volts).

The original main ring was replaced in by a new preaccelerator, called the Main. The Kobayashi-Maskawa theory of CP violation was proven by the discovery of CP violation in B-meson decays. It is a remarkable fact that the effort to explain a very small and minor effect of Kaon decay, CP violation, led to the prediction of the existence of six quarks and that it was successfully proven experimentally.

The most precise experiments ever to compare the mass of the proton and antiproton reveal no difference between the particles, determining that the masses of the proton and antiproton are identical to eleven decimal places. The existence of our world is anything but self-evident.

The Big Bang cre. two tau decays final state. He is a member of the CB Advisory Group. Ian received a from Queen Mary, London in and a Ph.D. from the University of Edinburgh in for studies of CP violation in the kaon system with the NA31 experiment at CERN.

He was a post doc and then. The proton - antiproton collider, complementary to the studies and discoveries made with electron-positron colliders, unfortunately presented a much greater challenge. Since an antiproton (or proton) is almost times heavier than an antielectron (or electron), it takes a lot more energy to create them.

A: The B_s meson decays as expected in the standard model (and the data should just about match the light-grey bands, up to statistical fluctuations). B: The standard model is not correct and the B_s meson decays to muon-antimuon pairs roughly 5 — 6 times more often than predicted (and the data should match the light+dark grey bands — note.

This paper contains information information on: accelerator and detector; QCD studies; studies of the electroweak force; The search for the top quark; {beta} physics at hadron colliders; and the search for exotic objects and prospects for the future.

Events containing χ b (1 3 P 1) states were selected by detecting the radiative transition from the ϒ (2S) in a data set corresponding to an integrated luminosity of pb −1.

The absence of secondary vertices from gluino decays into hadrons and a photino allows us to exclude gluinos in a mass range from 1 to GeV/c 2 and a lifetime.

The Intersecting Storage Rings produced the world’s first proton-antiproton collisions on 4 Aprilpaving the way for proton-antiproton collisions in the Super Proton Synchrotron (SPS), and the Nobel prize for Simon van der Meer and Carlo Rubbia. The ISR proved to. In the last five decades, proton–proton and proton–antiproton colliders have been the most powerful tools for high energy physics investigations.

They have also deeply catalyzed innovation in accel Cited by: 3. The Large Hadron Collider just detected some incredibly rare particle decays. Skip to content. Try Ads-Free Fark. Report.

It's Not News, It's Fark.Never mind that a few years ago, CERN scientists discovered a particle crucial to the understanding of physical matter.

Many Internet commenters want to talk about how CERN’s Large Hadron Collider, a mile subterranean loop that smashes particles at nearly the speed of light, may breach another dimension and unleash the forces of darkness.When an electron and a positron collide and annihilate, a very simple process takes place: With very high probability, the electron and positron interact and create an virtual photon (which you could imagine to be "pure" energy) and then the virtu.