Exploring GeV-scale Majorana neutrinos in lepton-number-violating Λb0 baryon decays

Exploring GeV-scale Majorana neutrinos in lepton-number-violating Λb0 baryon decays In this work, the lepton-number-violating processes in |ΔL|=2 decays of Λb0 baryon, Λb0→pπ+μ-μ- and Λb0→Λc+π+μ-μ-, are investigated for the first time, via an intermediate on-shell Majorana neutrino N with a mass in the GeV scale. We explore the experimental sensitivity of these dimuon channels at the LHCb and CMS experiments, in which heavy neutrino lifetimes in the accessible ranges of τN=[1,100,1000]  ps are considered. For a integrated luminosity collected of 10 and 50  fb−1 at the LHCb and 30, 300, and 3000  fb−1 at the CMS, we found significant sensitivity on branching fractions of the order BR(Λb0→pπ+μ-μ-)≲O(10-9–10-8) and BR(Λb0→Λc+π+μ-μ-)≲O(10-8–10-7). Exclusion regions on the parameter space (mN, |VμN|2) associated with the heavy neutrino are presented and compared with those from K-→π+μ-μ- (NA48/2) and B-→π+μ-μ- (LHCb) as well as by different search strategies such as NA3, CHARMII, NuTeV, Belle, and DELPHI. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Exploring GeV-scale Majorana neutrinos in lepton-number-violating Λb0 baryon decays

Preview Only

Exploring GeV-scale Majorana neutrinos in lepton-number-violating Λb0 baryon decays

Abstract

In this work, the lepton-number-violating processes in |ΔL|=2 decays of Λb0 baryon, Λb0→pπ+μ-μ- and Λb0→Λc+π+μ-μ-, are investigated for the first time, via an intermediate on-shell Majorana neutrino N with a mass in the GeV scale. We explore the experimental sensitivity of these dimuon channels at the LHCb and CMS experiments, in which heavy neutrino lifetimes in the accessible ranges of τN=[1,100,1000]  ps are considered. For a integrated luminosity collected of 10 and 50  fb−1 at the LHCb and 30, 300, and 3000  fb−1 at the CMS, we found significant sensitivity on branching fractions of the order BR(Λb0→pπ+μ-μ-)≲O(10-9–10-8) and BR(Λb0→Λc+π+μ-μ-)≲O(10-8–10-7). Exclusion regions on the parameter space (mN, |VμN|2) associated with the heavy neutrino are presented and compared with those from K-→π+μ-μ- (NA48/2) and B-→π+μ-μ- (LHCb) as well as by different search strategies such as NA3, CHARMII, NuTeV, Belle, and DELPHI.
Loading next page...
 
/lp/aps_physical/exploring-gev-scale-majorana-neutrinos-in-lepton-number-violating-b0-KsAkaRjWKL
Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.96.015039
Publisher site
See Article on Publisher Site

Abstract

In this work, the lepton-number-violating processes in |ΔL|=2 decays of Λb0 baryon, Λb0→pπ+μ-μ- and Λb0→Λc+π+μ-μ-, are investigated for the first time, via an intermediate on-shell Majorana neutrino N with a mass in the GeV scale. We explore the experimental sensitivity of these dimuon channels at the LHCb and CMS experiments, in which heavy neutrino lifetimes in the accessible ranges of τN=[1,100,1000]  ps are considered. For a integrated luminosity collected of 10 and 50  fb−1 at the LHCb and 30, 300, and 3000  fb−1 at the CMS, we found significant sensitivity on branching fractions of the order BR(Λb0→pπ+μ-μ-)≲O(10-9–10-8) and BR(Λb0→Λc+π+μ-μ-)≲O(10-8–10-7). Exclusion regions on the parameter space (mN, |VμN|2) associated with the heavy neutrino are presented and compared with those from K-→π+μ-μ- (NA48/2) and B-→π+μ-μ- (LHCb) as well as by different search strategies such as NA3, CHARMII, NuTeV, Belle, and DELPHI.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jul 1, 2017

There are no references for this article.

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial