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Understanding and constraining the PDF uncertainties in a W boson mass measurement with forward muons at the LHC
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Precision electroweak tests are a powerful probe of physics beyond the Standard Model, but the sensitivity is limited by the precision with which the $W$ boson mass ($M_W$) has been measured. The Parton Distribution Function (PDF) uncertainties are a potential limitation for measurements of $M_W$ with LHC data. It has recently been pointed out that, thanks to LHCb's unique forward rapidity acceptance, a new measurement of $M_W$ by LHCb can improve this situation. Here we report on a detailed study on the mechanism driving the PDF uncertainty in the LHCb measurement of $M_W$, and propose an approach which should reduce this uncertainty by roughly a factor of two using LHCb Run 2 data.
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Cited by 1 Pith paper
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Towards a W boson mass measurement with LHCb
Proposes a new approach to reduce PDF uncertainty by a factor of two in an LHCb W boson mass measurement with Run 2 data.
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