Analysis of some <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mi>b</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>c</mml:mi><mml:mi>τ</mml:mi><mml:msub><mml:mrow><mml:mover accent="true"><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="false">¯</mml:mo></mml:mrow></mml:mover></mml:mrow><mml:mrow><mml:mi>τ</mml:mi></mml:mrow></mml:msub></mml:math> decay modes beyond the standard model

Haritha, C. P.; Jain, Karthik; Mawlong, Barilang

doi:10.1016/j.nuclphysb.2023.116309

Cited by 1 publication

(2 citation statements)

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“…In this work, we analyze new physics sensitivity only in the presence of 𝐶 𝑉 𝐿 , 𝐶 𝑆 𝐿 and 𝐶 𝑆 𝑅 as in [2].…”

Section: Effective Lagrangianmentioning

confidence: 99%

“…The anomalies in the Lepton Flavor Universality (LFU) ratios 𝑅 𝐷 and 𝑅 𝐷 * persist as these ratios continue to exhibit deviations from the Standard Model (SM) by 3.3𝜎 [1], hinting the presence of possible new physics (NP) beyond the SM. Measurements of other observables like 𝑅 𝐽/𝜓 , 𝐹 𝐷 * 𝐿 , 𝑃 𝐷 * 𝜏 and 𝑅 Λ 𝑐 additionally entails NP in 𝑏 → 𝑐𝜏 ν𝜏 transitions [2]. To obtain a more accurate picture of the new interactions which are driving these anomalies, it is therefore imperative to study observables in other decay modes mediated by the same underlying quark level transition.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Examining semileptonic decays of $B_s$ to $D_s^{**}$ mesons beyond the standard model

Jain,

Mawlong

2024

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2023)

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Deviations of the measured LFU ratios such as 𝑅 𝐷 ( * ) and 𝑅 𝐽/𝜓 from the standard model predictions by 3.3 𝜎 and 1.8 𝜎, respectively, indicate the possible existence of new physics beyond the standard model. Precise measurements of other observables in decays involving 𝑏 → 𝑐ℓ𝜈 ℓ transitions in the future may substantiate or rule out the presence of new physics. Hence, it becomes important to analyze complementary 𝑏 → 𝑐ℓ𝜈 ℓ channels also, such as 𝐵 𝑠 → 𝐷 * * 𝑠 ℓ𝜈 ℓ , where 𝐷 * * 𝑠 = {𝐷 * 𝑠0 , 𝐷 * 𝑠1 , 𝐷 𝑠1 , 𝐷 * 𝑠2 }. The measured ratios 𝑅 𝐷 ( * ) suggest an excess of taus, whereas the measured ratio 𝑅 Λ 𝑐 shows a deficit in taus. The complementary information obtained from the measurement of LFU ratios like 𝑅 𝐷 * * 𝑠 may become crucial in the interpretation of the contributing new physics. In this work, we analyze various 𝑞 2 -dependent observables pertaining to the 𝐵 𝑠 → 𝐷 * * 𝑠 ℓ𝜈 ℓ decay modes within a new physics approach. The new interactions are constrained using available experimental data of 𝑏 → 𝑐ℓ𝜈 ℓ transitions.

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“…In this work, we analyze new physics sensitivity only in the presence of 𝐶 𝑉 𝐿 , 𝐶 𝑆 𝐿 and 𝐶 𝑆 𝑅 as in [2].…”

Section: Effective Lagrangianmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%