نتایج جستجو برای: hadron decay

تعداد نتایج: 88679  

2001
M. Carena S. Heinemeyer G. Weiglein

The Higgs boson search has shifted from LEP2 to the Tevatron and will subsequently move to the LHC. Due to the different initial states, the Higgs production and decay channels relevant for Higgs boson searches were different at LEP2 to what they are at hadron colliders. We suggest new benchmark scenarios for the MSSM Higgs boson search at hadron colliders that exemplify the phenomenology of di...

Journal: :Physical review. C, Nuclear physics 1994
Seibert Ko

We derive classically an expression for a hadron width in a two-phase region of hadron gas and quark-gluon plasma (QGP). The presence of QGP gives hadrons larger widths than they would have in a pure hadron gas. We find that the φ width observed in a central Au+Au collision at √ s = 200 GeV/nucleon is a few MeV greater than the width in a pure hadron gas. The part of observed hadron widths due ...

1999

We present preliminary results of a new measurement of the inclusive b quark fragmentation function in Z 0 decays using a novel kinematic B hadron energy reconstruction technique. The measurement is performed using 150,000 hadronic Z 0 events recorded in the SLD experiment at SLAC between 1996 and 1997. The small and stable SLC beam spot and the CCD-based vertex detector are used to reconstruct...

2002
Robert Fleischer

In this decade,B-decay experiments will allow stringent tests of the StandardModel description of CP violation. After a classification of the main strategies and a discussion of the most recent results on benchmark decay modes of B and Bd mesons, we focus on the “El Dorado” for hadron colliders, the Bsmeson system, discussing the differences between the Bd and Bs systems, as well as prominent B...

2002
I. C. CLOET D. B. LEINWEBER A. W. THOMAS

The Japan Hadron Facility will provide an unprecedented opportunity for the study of baryon resonance properties. This talk will focus on the chiral nonanalytic behaviour of magnetic moments exclusive to baryons with open decay channels. To illustrate the novel features associated with an open decay channel, we consider the " Access " quark model, where an analytic continuation of chiral pertur...

1993
J. H. Kühn

The status of top quark searches will be briefly reviewed. Theoretical predictions for the top quark decay rate are presented including QCD and electroweak radiative corrections. The possibilities for quarkonium searches at an hadron collider will be discussed. The perspectives for top production at an electron positron collider will be described in detail with emphasis on the behavior of the c...

2007
Federica Legger Thomas Schietinger

Radiative decays of polarized Λb baryons represent an attractive possibility to measure the helicity of the photon emitted in the b → sγ quark transition and thus to subject the Standard Model to a stringent test at existing and future hadron colliders. The most abundant mode, Λ(1116)γ, is experimentally very challenging because of the long decay length of the Λ(1116). We show that the experime...

1995
Matti Pitkänen

This is the fifth paper in the series devoted to the calculation particle and hadron masses in the p-adic field theory limit of TGD. In this paper the possibility of two new branches of physics suggested by TGD, namely M89 hadron physics and M127 leptohadron physics, is considered. According to TGD leptons and U type quarks have colored excitations. The anomalous production of ee pairs in heavy...

1997
Changhao Jin

We extend the approach based on the light-cone expansion and the heavy quark effective theory to the inclusive semileptonic decay of an unpolarized b-flavored hadron. It is applied to calculate the semileptonic decay width of the Λb baryon and its ratio to that of the B meson. We obtain ΓSL(Λb) = 51 ± 9 |Vcb| 2ps−1 and ΓSL(Λb)/ΓSL(B) = 1.052 ± 0.006. From the latter, the semileptonic branching ...

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