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<category>DPyC SMF</category>
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<announcer>
 <user>
  <title>Dr.</title>
  <name first="Pablo" middle="" last="Roig"></name>
  <organization>Cinvestav</organization>
  <emailHash>ea481e58ca9c64e14d7982cb66bcd604</emailHash>
  <userid>3312</userid>
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<title>RADPyC2026</title>
<description>The Division of Particles and Fields of the Mexican Physical Society (DPyC-SMF) organizes every year the Annual Meeting (RADPyC). This space is dedicated mainly for the exposure of results of graduate students and young researchers working in high energy physics and includes some review talks on the hot topics of the field. This year the meeting will be held in Auditorio José Ádem, Cinvestav, Mexico City, México. The scientific programme will consist of invited and contributed talks, and a poster session. It will begin in the morning of Wednesday 17 June and end before lunch on Friday 19 June.

We will have the following invited talks:
 
- Ana Colmenero, HAWC (UMSNH)

- Jens Erler, The EW SM and constraints on NP (Mainz, PRISMA)

- Iván Martínez Soler, Neutrino physics (Durham Univ.)

- Cristina Oropeza, CMS (Ibero)

- Antonio Ortiz, ALICE (ICN-UNAM)

- Gabriel Palacios, Accelerator physics (UNAM)

- Antonio Pich, Flavor physics (IFIC)

- Pedro Podesta, Belle-II (UAS)

- Selomit Ramírez, QCD, Loop Tree Duality, Quantum Computing (UAS)

- Saúl Ramos, Flavor physics from a top-down perspective (IF-UNAM)

- Alfredo Raya, NICA (UMSNH)

- Eric Vázquez, DM-neutrinos (exp.) (IF-UNAM)


The whole event can be followed by Zoom:

https://us02web.zoom.us/j/85815121456?pwd=t1JWdqhgarEQRyewmXIEzNlkIcqU8a.1

(858 1512 1456 &amp; 044752).

Due to recent internet security problems at Cinvestav it will NOT be broadcasted via the DPyC facebook account (facebook is currently blocked on our premises).</description>
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<startDate>2026-06-17T09:00:00</startDate>
<endDate>2026-06-19T14:30:00</endDate>
<creationDate>2026-03-23T09:50:55</creationDate>
<modificationDate>2026-06-19T17:51:55</modificationDate>
<timezone>Mexico/General</timezone>
<chair>
 <user>
  <title>Dr.</title>
  <name first="Gabriel" middle="" last="Lopez Castro"></name>
  <organization>cinvestav</organization>
  <emailHash>f09241183e84638d226a8885656239cd</emailHash>
 </user>
 <user>
  <title>Dr.</title>
  <name first="Omar" middle="" last="Miranda"></name>
  <organization>Cinvestav</organization>
  <emailHash>6be00aeecce15d4b2547496f45352003</emailHash>
 </user>
 <user>
  <title>Prof.</title>
  <name first="Eduard" middle="" last="De La Cruz Burelo"></name>
  <organization>CINVESTAV-IPN Mexico</organization>
  <emailHash>207484e6583dd9c0c1af2f52ce04fdd8</emailHash>
 </user>
 <user>
  <title>Dr.</title>
  <name first="Pablo" middle="" last="Roig"></name>
  <organization>Cinvestav</organization>
  <emailHash>ea481e58ca9c64e14d7982cb66bcd604</emailHash>
 </user>
 <user>
  <title>Dr.</title>
  <name first="Pablo" middle="" last="Roig"></name>
  <organization>Cinvestav</organization>
  <emailHash>3cd3ab69a079e614c15e4c750e7d3d60</emailHash>
 </user>
 <user>
  <title>Dr.</title>
  <name first="Haydee" middle="" last="Hernandez-Arellano"></name>
  <organization>BUAP</organization>
  <emailHash>5848375cb8b0db28e94350f19dcb744f</emailHash>
 </user>
 <user>
  <title>Prof.</title>
  <name first="Isabel" middle="" last="Pedraza"></name>
  <organization>Benemérita Universidad Autónoma de Puebla</organization>
  <emailHash>65efd11437264d48aa1f7486255a57bc</emailHash>
 </user>
</chair>
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 <title>Probing |Vtd| in single-top production at pe∓ colliders</title>
 <speakers>
  <user>
   <title>Dr.</title>
   <name first="Edier" middle="" last="Paredes Cruz"></name>
   <organization>Instituto de Física, UNAM</organization>
   <emailHash>6210ecedbafe3a034a1501fc68a3aaff</emailHash>
  </user>
 </speakers>
 <primaryAuthors>
  <user>
   <title>Dr.</title>
   <name first="Edier" middle="" last="Paredes Cruz"></name>
   <organization>Instituto de Física, UNAM</organization>
   <emailHash>6210ecedbafe3a034a1501fc68a3aaff</emailHash>
  </user>
 </primaryAuthors>
 <coAuthors>
  <user>
   <title>Dr.</title>
   <name first="Antonio" middle="" last="Bouzas"></name>
   <organization>CINVESTAV Merida</organization>
   <emailHash>bd44925daa92c75683e4fb3584863628</emailHash>
  </user>
  <user>
   <title>Dr.</title>
   <name first="Francisco" middle="" last="Larios"></name>
   <organization>Cinvestav-Merida</organization>
   <emailHash>80f85c4eeb31607081ad6da70ef433fb</emailHash>
  </user>
 </coAuthors>
 <duration>00:15</duration>
 <abstract>We study the consequences for top-quark physics of having electron and positron beams available at the LHeC and FCC-he, as was the case in HERA. We show that the asymmetry between top production in $pe^+$ collisions and antitop production in $pe^-$ reactions is sensitive to $|V_{td}|$. By means of detailed parton-level Monte Carlo simulations of single $t$ and $\bar{t}$ production and its backgrounds, we parametrize the asymmetry dependence on $|V_{td}|$ and estimate its uncertainties. Our analysis includes realistic phase-space cuts and machine-learning binary classifiers for background rejection. We thus obtain limits on $|V_{td}|$ that are substantially stronger than current ones and also smaller than current projections for the HL-LHC. We have $|V_{td}|&lt; 1.6 \times |V_{td}^{\text{PDG}}|$ at the LHeC, at 68\% C.L. with $L_\text{int} = 2$/ab.</abstract>
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