The effect of the Higgs boson on the threshold cross-section in W -pair production
نویسندگان
چکیده
We investigate the uncertainty induced by the Higgs-boson mass on the determination of mW from the LEP-2 run near the threshold for W -pair production. For a light Higgs boson the Yukawa interaction between the two slowly-moving W bosons gives rise to a correction of close to 1% to the total cross-section. This corresponds to a 15 MeV shift in the deduced W mass for a Higgs-boson mass of 60 GeV. We present a simple approximation for this correction and discuss its validity. 1 research supported by a fellowship of the Royal Dutch Academy of Arts and Sciences 2 research supported by the Stichting FOM Preprint submitted to Phys. Lett. B March 1996
منابع مشابه
Singlet scalar dark matter in noncommutative space
In this paper, we examine the singlet scalar dark matter annihilation to becoming the Standard Model particles in the non-commutative space. In the recent decades, many candidates of dark matter have been offered, but our information about the nature of dark matter is still limited. There are such particle candidates as scalar matetr, fermion, boson, gauge boson, etc.; however, they have nei...
متن کاملتولید کوارک تاپ منفرد به عنوان قیدی برای بوزونW
The existence of a new massive charged gauge boson, known as W’, is proposed by many new physics scenarios. When W’ decays to tb, the final state is very similar to the final state of the s-channel single top production, where W boson is the off-shell mediator to produce the top and bottom quarks. If W’ exists, it can affect the cross section of the SM s-channel single top production, so measur...
متن کاملHiggs mass dependence of top quark pair threshold production to order αα s
In this paper we consider the production of top quark pairs close to threshold and compute the dependence on the Higgs boson mass to order αα s. This requires the evaluation of the matching coefficient of the vector current to two-loop level and the inclusion of Higgs mass dependent operators in the non-relativistic effective theory. For Higgs boson masses below 200 GeV moderate contributions t...
متن کاملLeading Electroweak Corrections to the Production of Heavy Top Quarks at Hadron Colliders
We calculate the electroweak corrections of the order O( 2 t v2 ) to the QCD production of tt̄ pairs via qq̄ → tt̄ at hadron colliders and show that these corrections to the total production rate are small. This correction can be characterized as increasing the cross section most near the threshold region, where top quark signals are important, while the corrections become negative at higher tt̄ en...
متن کاملHiggs boson pair production at the LHC in the bb ̄W+W- channel
We consider Higgs boson pair production at the LHC in the bb ̄W+Wchannel, with subsequent decay of the W+Wpair into ��jj. Employing jet substructure and event reconstruction techniques, we show that strong evidence for this channel can be found at the 14 TeV LHC with 600fb-1 of integrated luminosity, thus improving the current reach for the production of Higgs boson pairs. This measurement will ...
متن کامل