Rare K decay: results and prospects

Subtracting the two, yields a 90% CL upper limit on the ... (3.48±0.05)×10−6. One wants to subtract from this measured quantity the ratio. Babs γ...

0 downloads 8 Views 817KB Size

Recommend Documents

(CKM) matrix [1], however, our knowledge of the CKM phase is poor today. ... of the B-factory are starting at KEK and SLAC, where CKM sector of SM will be ...

Jul 12, 2016 - ND280 is contained in the repurposed UA1 magnet, which enables the TPC information to distinguish positive and negative charged leptons from ν and ν interactions. FIG. 1: The T2K near detectors: INGRID (left) and ND280 (right). The f

6224 Agricultural Road, Vancouver, B.C. V6T 1Z1, Canada. 1 Introduction .... Long distance effects are negligible in comparison with short distance effects. K+ → π+νν is ..... NA48/1 plans to study many processes including K0. S → π0l+l− ..

Jun 1, 2006 - For this case, the longitudinal polar- ization fraction and charge asymmetry Ach are also measured. For the B0 → ωK∗0 and B0 → ωω decays, where there are signal yields of about 50 events, fL is left free in the fit (though sinc

Chris Bouchard,1, ∗ G. Peter Lepage,2 Christopher Monahan,3 Heechang Na,4 and Junko Shigemitsu5. (HPQCD Collaboration). 1Department of Physics ..... We have studied fits to all possible combinations of local and smeared data and found a .... 2 acco

Jan 18, 2011 - H. Atmacan,12 J. W. Gary,12 F. Liu,12 O. Long,12 G. M. Vitug,12 C. Campagnari,13 T. M. Hong,13 D. Kovalskyi,13 .... A. K. Yarritu,63 C. C. Young,63 V. Ziegler,63 X. R. Chen,64 W. Park,64 M. V. Purohit,64 R. M. White,64. J. R. Wilson,64

Shoem aker5,R.Soluk7,J.R.Stone5,R.C.Strand1,S.Sugim oto3,Y .Tam agawa2, .... decay at rest in the RS stopping counter was identi ed online,based on the.

tor and is free of long distance effects related the presence of four quark operators in the effective Hamiltonian (see for example [15]). It is well known that the ...

Sep 18, 2012 - The observed number of candidates is consistent with the background-only hypothesis, yielding an upper limit of B(K0. S → µ+µ-) < 11(9) × 10-9 at 95 (90)% confidence level. This limit is a factor of thirty below the previous measu

18Colorado State University, Fort Collins, Colorado 80523, USA. 19Technische ... Centre Scientifique d'Orsay, B. P. 34, F-91898 Orsay Cedex, France ... 58Princeton University, Princeton, New Jersey 08544, USA ... using a data sample of 470.9 ± 2.8 m

May 8, 2018 - arXiv:hep-ph/9209249v1 17 Sep 1992. Exclusive Rare Decay B → K∗γ. Patrick J. O'Donnell. Department of Physics, University of Toronto,.

Jan 8, 2014 - box diagrams and are described by three independent Wilson coefficients C7, C9 and C10. Investigations allow us to study different structures, described by the above mentioned. Wilson coefficients. In the SM, the measurement of the forw

Jan 12, 2007 - Chambers. (DC1-DC4). Trigger. Hodoscope. Muon. System. Steel. CsI .... is the vector dominance inspired model of Bergström, Masso and Singer (BMS) [9]. ... To lowest order this is described by the diagram shown in Fig.

tions in a detector, as was first proposed in connection with cryogenic devices [3,4]. The low energies (of the order of keVs) and rates (of ... The experiment is housed in a 3 storey building, erected around a Faraday cage to shield the .... Its des

Jul 4, 2011 - ACP (f) + AD(f) + AD(πslow) + AP(D ... where the N(decay) are the numbers of reconstructed decays, ACP (f) is the CP .... 100 (2008) 061803. 8.

Aug 8, 2016 - tion, owing to weaker constraints from B physics [4][5]. ... A shash- lik small-angle annular calorimeter (IRC) in front of. LKr detects γ .... 2015 Data ν+. µ→. +. K. 0 π+ π→. +. K. - π+ π+ π→. +. K. Figure 5: m2 miss dis

Jan 14, 2009 - Mine in Minnesota, to make precise measurements of νµ ... the θ13 mixing angle by searching for νe appearance in the νµ beam. Key words:.

where M is the mass of the lens, and dol, dls, and dos are the distances between the ..... Group, such as probing the star formation history of the universe (Gould.

Jul 2, 2013 - Abstract: The MINOS experiment has used the world's most powerful neutrino beam to make precision neutrino oscillation measurements. By observing the disappearance of muon neutrinos, MINOS has made the world's most precise measurement o

Feb 21, 2014 - 1Theory Center, Thomas Jefferson National Accelerator Facility, 12000 Jefferson Avenue, Newport News,. VA 23606, U.S.A. ... All these hadrons generate poles in the complex energy plane that are consequences of the ... alternative is to

Feb 21, 2014 - alternative is to use experiment as our guide, and learn from there. .... These are the basics of no particular theory, but every ... The mission of the JLab Physics Analysis Center is to network with appropriate theorists and ex-.

Jun 4, 2017 - of data corresponding to 1.2 × 109 B-meson pairs. ... most of its data at the ϒ(4S) resonance, which gives a very clean sample of quantum ...

Sep 22, 2014 - At this stage of the LHC program, the prospect for a new physics signal in the very rare K → πνν decays may be dented, but remains well alive thanks to their intrinsic qualities. First, these decays are among the cleanest observab

Sep 14, 2018 - almost hermetic coverage reaching a 107 suppression factor. .... vertex position Zvtx and the π0 missing transverse momentum Pt can be com-.